CHEMICAL ENGINEERING
CHEMICAL ENGINEERING SYLLABUS
These syllabus may change from time to time. Please check with the relevant Public Service Commission websites for any changes in the syllabus)
1. PROCESS CALCULATIONS Units and conversions, chemical equation and stoichiometry. Ideal gas law calculations, real gas relationships, vapour pressure and liquids, saturation, partial saturation and humidity. Material balance of processes with and without chemical reaction, including recycle, purge and bypass. Energy Balances: Calculation of enthalpy changes, general balance with and without reactions, heats of solution and mixing.
2. MOMENTUM TRANSFER OPERATIONS Continuity equation for compressible and incompressible fluids. Bernoulli's equation, Euler's equation, introduction to Navier-Stokes equation. Steady and unsteady, laminar and turbulent flows, Relationship between shear stress and pressure gradient, Hagen-Poiseuille equation. Prandtl's mixing length theory and eddy diffusivity losses in pipes and fittings, Darcy-Weisbach equation for frictional head loss, Moody diagram. Velocity profile and boundary layer calculations for turbulent flow. Flow measuring devices such as orifice meter, venturimeter and rotameter.
3. PARTICULATE TECHNOLOGY Size Reduction: Principles of crushing and grinding, Determination of mean particle size and size distribution, Laws of crushing and grinding, Energy required for size reduction, crushing and grinding equipment, closed and open circuit grinding. Types of screens, mesh number and size distribution, different types of screening, effectiveness of screen, Particle size analysis, separation efficiency and screening equipment. Solid-Liquid Separation: Theory of filtration, filtration equipment, equations for compressible and incompressible cakes, Constant volume and Constant pressure filtration, press filter, rotary drum and vacuum filter. Fiber and fabric filters, sedimentation, classifiers and thickeners. Centrifuges- Principles and applications. Solid-Gas Separation: Cyclone separators and electrostatic precipitator- Principles and applications.
4. HEAT TRANSFER OPERATIONS Modes of heat transfer: conduction, convection, radiation. Fourier's law, thermal conductivity, steady-state conduction of heat through a composite solid, cylinder and sphere. Steady-state heat conduction in bodies with heat sources: plane wall, cylinder and sphere. Convective heat transfer and the concept of heat transfer coefficient, overall heat transfer coefficient, heat transfer from extended surfaces, thermal contact resistance, critical insulation thickness, optimum insulation thickness. Forced convection: Flow over a flat plate, thermal boundary layer, flow across a cylinder. Dimensional analysis: Buckingham Pi theorem, Dimensional groups in heat transfer. Correlations for the heat transfer coefficient: Laminar flow through a circular pipe, turbulent flow through a circular pipe, flow through a non-circular duct, flow over flat plate, flow across a cylinder, flow past a sphere, flow across a bank of tubes, heat transfer coefficient in a packed and fluidized bed. Free convection: Introduction, heat transfer correlations for free convection: flat surface, cylinder, sphere, enclosure. Combined free and forced convection. Black body radiation, Planck’s Law, Wien’s Displacement Law, Stefan-Boltzmann Law, Kirchoffs Law, Gray body. Radiation intensity of a black body, spectral emissive power of a black body over a hemisphere.
5. MASS TRANSFER OPERATIONS Molecular diffusion, fluxes and measurement of diffusivities. Mass transfer coefficients, laminar and turbulent flow situations and correlations. Two film theory and overall mass transfer coefficients, penetration and surface renewal theories. Concepts of equilibrium stage, operating line and tie line. Continuous contacting operations: Gas absorption - countercurrent isothermal, HETP, design equation, (L/G) min, NTU, HTU, calculation of NTU, packed tower distillation, flooding, AP, liquid and gas distributors, entrainment eliminators. Humidification and dehumidification, cooling towers, drying theory and design, crystallization. Binary distillation: ideal and non- ideal stages; definitions of point, stage and column efficiencies. Single stage calculations: differential (Rayleigh) and simple (flash) distillation, steam distillation. Ponchon- Savarit diagram, McCabe-Thiele diagram; plate calculations, Absorption, Liquid-liquid extraction, Adsorption and Leaching. Membrane Separation Processes: Physical and chemical properties of membranes, Techniques of membrane preparation, membrane characterization, various types of membranes and modules. osmosis and osmotic pressure. Working principle and operation of Reverse osmosis, Ultrafiltration, Microfiltration, Electrodialysis and Pervaporation.
6. CHEMICAL ENGINEERING THERMODYNAMICS First law of Thermodynamics and its applications. PVT behavior of pure substances, virial equation and its applications, cubic equations of state, generalized correlations for gases and liquids. Sensible heat effects, heat effects accompanying phase changes of pure substances, standard heats of reaction, formation and combustion, effect of temperature on the standard heat of reaction. Second law of Thermodynamics: Limitation of first law, Kelvin-Planck and Clausius statements, Reversible and irreversible processes, Carnot cycle, Entropy, Second Law Analysis of a control volume. Maxwell’s equations, Residual properties, Clapeyroo’s Equation, Gétieralized correlations for thermodynamic properties of gases. Multicomponent systems: Chemical potential, ideal-gas mixture, ideal solution, Raoult’s law. Partial properties, fugacity and fugacity coefficient, generalized correlations for the fugacity coefficient, excess Gibbs’ energy, activity coefficient. Phase Equilibria: Phase rule, phase behavior for vapor liquid systems, Margules equation, Van- Laar equation, Wilson equation, NRTL equation. Dew point, bubble point and flash calculations. Effect of temperature on the equilibrium constant, evaluation of equilibrium constants. Relations between equilibrium constants and compositions: gas-phase reactions, liquid-phase reactions.
7. CHEMICAL REACTION ENGINEERING Reaction rates, variables affecting reaction rates, classification of reactions, order, molecularity. Reaction mechanisrii & Kinetics of homogenous reactions. Temperature dependent term of a rate equation. Interpretation of batch reactor data: constant volume batch reactor, variable volume batch reactor. Ideal reactors for single reaction: Ideal batch reactor, steady state mixed flow reactor, steady state PFR, holding time and space time for flow systems. Design for single reactions: size comparison, multiple reactor systems, recycle reactor, auto catalytic reactions. Temperature and pressure effects on single reactions. Non-ideal flow: Residence time distribution of fluids, general characteristics, Measurement of RTD, RTD in ideal reactor, Tanks-in-series model. Catalysts: Description, methods of preparation and manufacture; catalyst characterization — BET surface area, pore volume, pore size distribution. Catalyst reaction kinetic models: Physical and chemical adsorption; Determination of rate expressions using adsorption, surface reaction and desorption as ratecontrolling steps. Determination of Global rate of reaction: Heterogeneous laboratory reactors; Determination of rate expressions from experimental data. Effect of intrapellet diffusion on reaction rates in isothermal pellets. Gas-liquid reactions: Effect of diffusion on rate of reaction, enhancement factor. Introduction to design of heterogeneous reactors and its parametric sensitivity.
8. PROCESS CONTROL First-order systems: Transfer function, transient response, response of first-order systems in series: non-interacting systems and interacting systems. Second-order systems: Transfer function, step response, impulse response, sinusoidal response, transportation lag. Linear closed-loop systems: Components of a control system, block diagram, negative feedback and positive feedback, servo problem and regulator problem. Controller and final control element: Mechanism of control valve and controller, transfer functions of control valve and controllers (P, PI, PD, PID). Closed-loop transfer functions: Overall transfer function for single-loop systems, overall transfer function for set-point change and load change, multi-loop control systems. Transient response of simple control systems: P and PI control for set-point change and for load change. Concept of stability; stability criteria; Routh test for stability; Root locus. Introduction to frequency response, Bode diagrams for first and second order systems, Bode stability criteria, Ziegler-Nichols and Cohen-Coon tuning rules.
9. PLANT DESIGN & ENGINEERING ECONOMICS Process design development and general design considerations. Process Economics: economic feasibility of project using order-of-magnitude cost estimates, plant and equipment cost estimation, product cost estimation. Time value of money, investment, costs, sales, profits, taxes, depreciation. Rate of return, payback period, discount rate of return, net present worth, internal rate of return, comparing investment alternatives.
10. INDUSTRIAL POLLUTION CONTROL Wastewater Treatment: Characterization of industrial wastewater, primary, secondary and tertiary treatment, segregation, screening, equalization, coagulation, flocculation, precipitation, flotation, sedimentation, aerobic treatment, anaerobic treatment, absorption, ion exchange, membrane filtration, electrodialysis, sludge dewatering and disposal methods. Air Pollution Control: Sources and classification of air pollutants, nature and characteristics of gaseous and particulate pollutants, pollutants from automobiles.
11. CHEMICAL TECHNOLOGY Hydrogen, producer gas and water gas, ammonia, nitric acid, nitrogenous and mixed fertilizers, common salt, caustic soda, chlorine, hydrochloric acid, soda ash, sulphuric acid, oleum, portland cement, formaldehyde, ethylene oxide, ethylene glycol, acrylonitrile, styrene, butadiene, BHC, DDT, industrial alcohol, oils, fats and waxes, soaps and detergents, pulp and paper industry. Liquid Fuels/Petroleum Refining: Origin, composition, classification, and constituents of Petroleum: Indian crudes. Processing of crude oil: distillation, cracking — thermal and catalytic, reforming - thermal and catalytic, polymerization, alkylation, and isomerisation. Purification of petroleum products, antiknock value and requisites of good quality gasoline, diesel and fuel oil, liquid fuels from coal by hydrogenation/ liquefaction. Polymerization Reactions: Functionality, polymerization reactions, polycondensation, addition, free radical and chain polymerization. Copolymerization, block and graft polymerizations, kinetics of radical, chain and ionic polymerization and co-polymerization systems. Bulk, solution, emulsion and suspension polymerization.
1. PROCESS CALCULATIONS Units and conversions, chemical equation and stoichiometry. Ideal gas law calculations, real gas relationships, vapour pressure and liquids, saturation, partial saturation and humidity. Material balance of processes with and without chemical reaction, including recycle, purge and bypass. Energy Balances: Calculation of enthalpy changes, general balance with and without reactions, heats of solution and mixing.
2. MOMENTUM TRANSFER OPERATIONS Continuity equation for compressible and incompressible fluids. Bernoulli's equation, Euler's equation, introduction to Navier-Stokes equation. Steady and unsteady, laminar and turbulent flows, Relationship between shear stress and pressure gradient, Hagen-Poiseuille equation. Prandtl's mixing length theory and eddy diffusivity losses in pipes and fittings, Darcy-Weisbach equation for frictional head loss, Moody diagram. Velocity profile and boundary layer calculations for turbulent flow. Flow measuring devices such as orifice meter, venturimeter and rotameter.
3. PARTICULATE TECHNOLOGY Size Reduction: Principles of crushing and grinding, Determination of mean particle size and size distribution, Laws of crushing and grinding, Energy required for size reduction, crushing and grinding equipment, closed and open circuit grinding. Types of screens, mesh number and size distribution, different types of screening, effectiveness of screen, Particle size analysis, separation efficiency and screening equipment. Solid-Liquid Separation: Theory of filtration, filtration equipment, equations for compressible and incompressible cakes, Constant volume and Constant pressure filtration, press filter, rotary drum and vacuum filter. Fiber and fabric filters, sedimentation, classifiers and thickeners. Centrifuges- Principles and applications. Solid-Gas Separation: Cyclone separators and electrostatic precipitator- Principles and applications.
4. HEAT TRANSFER OPERATIONS Modes of heat transfer: conduction, convection, radiation. Fourier's law, thermal conductivity, steady-state conduction of heat through a composite solid, cylinder and sphere. Steady-state heat conduction in bodies with heat sources: plane wall, cylinder and sphere. Convective heat transfer and the concept of heat transfer coefficient, overall heat transfer coefficient, heat transfer from extended surfaces, thermal contact resistance, critical insulation thickness, optimum insulation thickness. Forced convection: Flow over a flat plate, thermal boundary layer, flow across a cylinder. Dimensional analysis: Buckingham Pi theorem, Dimensional groups in heat transfer. Correlations for the heat transfer coefficient: Laminar flow through a circular pipe, turbulent flow through a circular pipe, flow through a non-circular duct, flow over flat plate, flow across a cylinder, flow past a sphere, flow across a bank of tubes, heat transfer coefficient in a packed and fluidized bed. Free convection: Introduction, heat transfer correlations for free convection: flat surface, cylinder, sphere, enclosure. Combined free and forced convection. Black body radiation, Planck’s Law, Wien’s Displacement Law, Stefan-Boltzmann Law, Kirchoffs Law, Gray body. Radiation intensity of a black body, spectral emissive power of a black body over a hemisphere.
5. MASS TRANSFER OPERATIONS Molecular diffusion, fluxes and measurement of diffusivities. Mass transfer coefficients, laminar and turbulent flow situations and correlations. Two film theory and overall mass transfer coefficients, penetration and surface renewal theories. Concepts of equilibrium stage, operating line and tie line. Continuous contacting operations: Gas absorption - countercurrent isothermal, HETP, design equation, (L/G) min, NTU, HTU, calculation of NTU, packed tower distillation, flooding, AP, liquid and gas distributors, entrainment eliminators. Humidification and dehumidification, cooling towers, drying theory and design, crystallization. Binary distillation: ideal and non- ideal stages; definitions of point, stage and column efficiencies. Single stage calculations: differential (Rayleigh) and simple (flash) distillation, steam distillation. Ponchon- Savarit diagram, McCabe-Thiele diagram; plate calculations, Absorption, Liquid-liquid extraction, Adsorption and Leaching. Membrane Separation Processes: Physical and chemical properties of membranes, Techniques of membrane preparation, membrane characterization, various types of membranes and modules. osmosis and osmotic pressure. Working principle and operation of Reverse osmosis, Ultrafiltration, Microfiltration, Electrodialysis and Pervaporation.
6. CHEMICAL ENGINEERING THERMODYNAMICS First law of Thermodynamics and its applications. PVT behavior of pure substances, virial equation and its applications, cubic equations of state, generalized correlations for gases and liquids. Sensible heat effects, heat effects accompanying phase changes of pure substances, standard heats of reaction, formation and combustion, effect of temperature on the standard heat of reaction. Second law of Thermodynamics: Limitation of first law, Kelvin-Planck and Clausius statements, Reversible and irreversible processes, Carnot cycle, Entropy, Second Law Analysis of a control volume. Maxwell’s equations, Residual properties, Clapeyroo’s Equation, Gétieralized correlations for thermodynamic properties of gases. Multicomponent systems: Chemical potential, ideal-gas mixture, ideal solution, Raoult’s law. Partial properties, fugacity and fugacity coefficient, generalized correlations for the fugacity coefficient, excess Gibbs’ energy, activity coefficient. Phase Equilibria: Phase rule, phase behavior for vapor liquid systems, Margules equation, Van- Laar equation, Wilson equation, NRTL equation. Dew point, bubble point and flash calculations. Effect of temperature on the equilibrium constant, evaluation of equilibrium constants. Relations between equilibrium constants and compositions: gas-phase reactions, liquid-phase reactions.
7. CHEMICAL REACTION ENGINEERING Reaction rates, variables affecting reaction rates, classification of reactions, order, molecularity. Reaction mechanisrii & Kinetics of homogenous reactions. Temperature dependent term of a rate equation. Interpretation of batch reactor data: constant volume batch reactor, variable volume batch reactor. Ideal reactors for single reaction: Ideal batch reactor, steady state mixed flow reactor, steady state PFR, holding time and space time for flow systems. Design for single reactions: size comparison, multiple reactor systems, recycle reactor, auto catalytic reactions. Temperature and pressure effects on single reactions. Non-ideal flow: Residence time distribution of fluids, general characteristics, Measurement of RTD, RTD in ideal reactor, Tanks-in-series model. Catalysts: Description, methods of preparation and manufacture; catalyst characterization — BET surface area, pore volume, pore size distribution. Catalyst reaction kinetic models: Physical and chemical adsorption; Determination of rate expressions using adsorption, surface reaction and desorption as ratecontrolling steps. Determination of Global rate of reaction: Heterogeneous laboratory reactors; Determination of rate expressions from experimental data. Effect of intrapellet diffusion on reaction rates in isothermal pellets. Gas-liquid reactions: Effect of diffusion on rate of reaction, enhancement factor. Introduction to design of heterogeneous reactors and its parametric sensitivity.
8. PROCESS CONTROL First-order systems: Transfer function, transient response, response of first-order systems in series: non-interacting systems and interacting systems. Second-order systems: Transfer function, step response, impulse response, sinusoidal response, transportation lag. Linear closed-loop systems: Components of a control system, block diagram, negative feedback and positive feedback, servo problem and regulator problem. Controller and final control element: Mechanism of control valve and controller, transfer functions of control valve and controllers (P, PI, PD, PID). Closed-loop transfer functions: Overall transfer function for single-loop systems, overall transfer function for set-point change and load change, multi-loop control systems. Transient response of simple control systems: P and PI control for set-point change and for load change. Concept of stability; stability criteria; Routh test for stability; Root locus. Introduction to frequency response, Bode diagrams for first and second order systems, Bode stability criteria, Ziegler-Nichols and Cohen-Coon tuning rules.
9. PLANT DESIGN & ENGINEERING ECONOMICS Process design development and general design considerations. Process Economics: economic feasibility of project using order-of-magnitude cost estimates, plant and equipment cost estimation, product cost estimation. Time value of money, investment, costs, sales, profits, taxes, depreciation. Rate of return, payback period, discount rate of return, net present worth, internal rate of return, comparing investment alternatives.
10. INDUSTRIAL POLLUTION CONTROL Wastewater Treatment: Characterization of industrial wastewater, primary, secondary and tertiary treatment, segregation, screening, equalization, coagulation, flocculation, precipitation, flotation, sedimentation, aerobic treatment, anaerobic treatment, absorption, ion exchange, membrane filtration, electrodialysis, sludge dewatering and disposal methods. Air Pollution Control: Sources and classification of air pollutants, nature and characteristics of gaseous and particulate pollutants, pollutants from automobiles.
11. CHEMICAL TECHNOLOGY Hydrogen, producer gas and water gas, ammonia, nitric acid, nitrogenous and mixed fertilizers, common salt, caustic soda, chlorine, hydrochloric acid, soda ash, sulphuric acid, oleum, portland cement, formaldehyde, ethylene oxide, ethylene glycol, acrylonitrile, styrene, butadiene, BHC, DDT, industrial alcohol, oils, fats and waxes, soaps and detergents, pulp and paper industry. Liquid Fuels/Petroleum Refining: Origin, composition, classification, and constituents of Petroleum: Indian crudes. Processing of crude oil: distillation, cracking — thermal and catalytic, reforming - thermal and catalytic, polymerization, alkylation, and isomerisation. Purification of petroleum products, antiknock value and requisites of good quality gasoline, diesel and fuel oil, liquid fuels from coal by hydrogenation/ liquefaction. Polymerization Reactions: Functionality, polymerization reactions, polycondensation, addition, free radical and chain polymerization. Copolymerization, block and graft polymerizations, kinetics of radical, chain and ionic polymerization and co-polymerization systems. Bulk, solution, emulsion and suspension polymerization.
1:-Atoms of different elements having same number of neutrons are called
A:-Isotopes
B:-Isobars
C:-Isotones
D:-Isomers
Ans: C
2:-Sulphide ores are concentrated by
A:-Froth floatation method
B:-Magnetic separation
C:-Hydraulic washing
D:-Leaching
Ans: A
3:-The thermal decomposition of Hl on gold surface is a reaction of
A:-First order
B:-Zero order
C:-Fractional order
D:-Second order
Ans: B
4:-Among the following which is used as dehydrating reagent
A:-Alcoholic KOH
B:-Acidified `"KMnO_4"`
C:-`"LiAlH_4"`
D:-`"Conc.H_2SO_4"`
Ans: D
5:-General outer electronic configuration of group 15 elements are
A:-`"ns^2np^3"`
B:-`"ns^2np^4"`
C:-`"ns^2np^6"`
D:-`"ns^2np^5"`
Ans: A
6:-The process of accumulation of molecular species at the surface rather than in the bulk is called
A:-Absorption
B:-Adsorption
C:-Sorption
D:-Desorption
Ans: B
7:-Schottky defect is characterised by
A:-Increase in density
B:-Decrease in density
C:-No change in density
D:-None of the above
Ans: B
8:-Caustic soda is
A:-NaCl
B:-`"NaHCO_3"`
C:-`"Na_2CO_3"`
D:-NaOH
Ans: D
9:-Number of moles of solute dissolved in 1 kg of solvent is
A:-Molarity
B:-Mole fraction
C:-Molality
D:-Mass percentage
Ans: C
10:-Williamson's synthesis is used for the preparation of
A:-Aldehydes
B:-Ketones
C:-Alcohols
D:-Ethers
Ans: D
11:-Which of the following is isoelectronic species?
1. `"Na^+"`
2. `"Ca^2^+"`
3. `"F^-"`
4. `"O^2^-"`
A:-1, 2 and 4
B:-1, 3 and 4
C:-2, 3 and 4
D:-1, 2 and 3
Ans: B
12:-Oleum is
A:-`"H_2S_2O_7"`
B:-`"H_2SO_4"`
C:-`"H_2SO_3"`
D:-`"SO_3"`
Ans: A
13:-The +8 oxidation state is shown by
A:-Os
B:-Fe
C:-Mn
D:-Th
Ans: A
14:-Which of the following is a natural polymer?
A:-Polyethene
B:-Teflon
C:-Cellulose
D:-Glyptal
Ans: C
15:-On heating an aldehyde with Fehling solution, we get a precipitate whose colour is
A:-White
B:-Yellow
C:-Red
D:-Black
Ans: C
16:-Nitric acid is prepared by
A:-Contact process
B:-Ostwald's process
C:-Haber process
D:-Oxidation process
Ans: B
17:-Which of the following substance on dissolving in water will give an acidic solution?
A:-NaCl
B:-`"Na_2CO_3"`
C:-`"CH_3COONa"`
D:-`"NH_4Cl"`
Ans: D
18:-Zeigler-Natta catalyst is
A:-`"(CH_3)_3Al"` and `"TiCl_4"`
B:-`"(C_2H_5)_3Al"` and `"TiCl_4"`
C:-`"V_2O_5"`
D:-`"KMnO_4"`
Ans: B
19:-Which of the following has magnesium?
A:-Chlorophyll
B:-Haemoglobin
C:-`"Vit.B_1_2"`
D:-Haemocyanin
Ans: A
20:-Natural rubber is a polymer of
A:-Styrene
B:-Chloroprene
C:-Acrylonitrile
D:-Isoprene
Ans: D
A:-Isotopes
B:-Isobars
C:-Isotones
D:-Isomers
Ans: C
2:-Sulphide ores are concentrated by
A:-Froth floatation method
B:-Magnetic separation
C:-Hydraulic washing
D:-Leaching
Ans: A
3:-The thermal decomposition of Hl on gold surface is a reaction of
A:-First order
B:-Zero order
C:-Fractional order
D:-Second order
Ans: B
4:-Among the following which is used as dehydrating reagent
A:-Alcoholic KOH
B:-Acidified `"KMnO_4"`
C:-`"LiAlH_4"`
D:-`"Conc.H_2SO_4"`
Ans: D
5:-General outer electronic configuration of group 15 elements are
A:-`"ns^2np^3"`
B:-`"ns^2np^4"`
C:-`"ns^2np^6"`
D:-`"ns^2np^5"`
Ans: A
6:-The process of accumulation of molecular species at the surface rather than in the bulk is called
A:-Absorption
B:-Adsorption
C:-Sorption
D:-Desorption
Ans: B
7:-Schottky defect is characterised by
A:-Increase in density
B:-Decrease in density
C:-No change in density
D:-None of the above
Ans: B
8:-Caustic soda is
A:-NaCl
B:-`"NaHCO_3"`
C:-`"Na_2CO_3"`
D:-NaOH
Ans: D
9:-Number of moles of solute dissolved in 1 kg of solvent is
A:-Molarity
B:-Mole fraction
C:-Molality
D:-Mass percentage
Ans: C
10:-Williamson's synthesis is used for the preparation of
A:-Aldehydes
B:-Ketones
C:-Alcohols
D:-Ethers
Ans: D
11:-Which of the following is isoelectronic species?
1. `"Na^+"`
2. `"Ca^2^+"`
3. `"F^-"`
4. `"O^2^-"`
A:-1, 2 and 4
B:-1, 3 and 4
C:-2, 3 and 4
D:-1, 2 and 3
Ans: B
12:-Oleum is
A:-`"H_2S_2O_7"`
B:-`"H_2SO_4"`
C:-`"H_2SO_3"`
D:-`"SO_3"`
Ans: A
13:-The +8 oxidation state is shown by
A:-Os
B:-Fe
C:-Mn
D:-Th
Ans: A
14:-Which of the following is a natural polymer?
A:-Polyethene
B:-Teflon
C:-Cellulose
D:-Glyptal
Ans: C
15:-On heating an aldehyde with Fehling solution, we get a precipitate whose colour is
A:-White
B:-Yellow
C:-Red
D:-Black
Ans: C
16:-Nitric acid is prepared by
A:-Contact process
B:-Ostwald's process
C:-Haber process
D:-Oxidation process
Ans: B
17:-Which of the following substance on dissolving in water will give an acidic solution?
A:-NaCl
B:-`"Na_2CO_3"`
C:-`"CH_3COONa"`
D:-`"NH_4Cl"`
Ans: D
18:-Zeigler-Natta catalyst is
A:-`"(CH_3)_3Al"` and `"TiCl_4"`
B:-`"(C_2H_5)_3Al"` and `"TiCl_4"`
C:-`"V_2O_5"`
D:-`"KMnO_4"`
Ans: B
19:-Which of the following has magnesium?
A:-Chlorophyll
B:-Haemoglobin
C:-`"Vit.B_1_2"`
D:-Haemocyanin
Ans: A
20:-Natural rubber is a polymer of
A:-Styrene
B:-Chloroprene
C:-Acrylonitrile
D:-Isoprene
Ans: D
21:-A pressure cooker reduces cooking time because
A:-Heat is more evenly distributed
B:-The boiling point of water inside the cooker is elevated
C:-The higher pressure tenderises the food
D:-The boiling point of water inside the cooker is depressed
Ans: B
22:-The galvanic cell which convert energy of combustion directly to electrical energy is called
A:-Fuel cell
B:-Primary cell
C:-Secondary cell
D:-Voltaic cell
Ans: A
23:-Haber process is used for the manufacture of
A:-Sulphuric acid
B:-Nitric acid
C:-Nitrogen
D:-Ammonia
Ans: D
24:-The group 13 element which is liquid during summer is
A:-Al
B:-In
C:-Ga
D:-Tl
Ans: C
25:-Intra molecular hydrogen bond exist in
A:-HF
B:-`H_(2)O`
C:-o-nitro phenol
D:-ethyl alcohol
Ans: C
26:-Which of the following shows both Schottky and Frenkel defect ?
A:-AgBr
B:-CsCl
C:-AgCl
D:-ZnS
Ans: A
27:-Bauxite is the ore of
A:-Iron
B:-Aluminium
C:-Copper
D:-Zinc
Ans: B
28:-How many kinds of space lattice are possible in a crystal?
A:-7
B:-23
C:-14
D:-21
Ans: C
29:-The law starting that ''the partial pressure of the gas in vapour phase is proportional to the mole fraction of the gas in the solution'' is known as
A:-Raoults law
B:-Dalton's law of partial pressure
C:-Ostwald's dilution law
D:-Henry's law
Ans: D
30:-The excess pressure that is applied to the solution to prevent the passage of solvent in to it through a semi permeable membrane is referred to as
A:-Partial pressure
B:-Critical pressure
C:-Osmotic pressure
D:-None of these
Ans: C
31:-The hybridisation of carbon in Graphite is
A:-`"dsp^2"`
B:-sp
C:-`"sp"^3`
D:-`"sp"^2`
Ans: D
32:-Isotonic solutions have
A:-Same osmotic pressure
B:-same freezing point
C:-same melting point
D:-same boiling point
Ans: A
33:-Best method to prevent corrosion of iron is
A:-making iron cathode
B:-making iron anode
C:-put it in saline water
D:-make it in contact with atmosphere
Ans: A
34:-The half life of first order reaction with rate constant 'K' is given by
A:-`([R_(0)])/(2K)`
B:-`([R_(0)])/(K)`
C:-`(0.693)/(2K)`
D:-`(0.693)/(K)`
Ans: D
35:-Unit of first order reaction is
A:-`S^(-1)`
B:-`mol L^(-1)S^-1`
C:-`mol^(-1)LS^(-1)`
D:-dimensionless
Ans: A
36:-Which of the following constitute Daniel cell?
A:-Zn-Hg cell
B:-Zn-Cu cell
C:-Zn-Ag cell
D:-Cu-Hg cell
Ans: B
37:-The correct formula for plaster of paris is
A:-`"CaSO_4.2H_2O"`
B:-`"CaSO_4"` .`"H_2O"`
C:-`"CaSO_4"` .`(1)/(2)` `"H_2O"`
D:-`"Ca_2SO_4"` . `"H_2O"`
Ans: C
38:-Permanent hardness of water is due to the presence of
A:-Bicarbonates of Na and K
B:-Bicarbonates of Ca and Mg
C:-Chlorides and sulphates of Ca and Mg
D:-Chlorides and sulphates of Na and K
Ans: C
39:-Role of a catalyst in a chemical reaction is
A:-To decrease activation energy
B:-To increase activation energy
C:-To increase heat of reaction
D:-To decrease heat of reaction
Ans: A
40:-Characteristics of transition element
A:-Show variable oxidation state
B:-Forms alloys
C:-Form coloured compounds
D:-All the above
Ans: D
41:-In [`"Ni(CO)_4"` ], the oxidation number of Nickel is
A:-+3
B:-+2
C:-+4
D:-Zero
Ans: D
42:-Primary, secondary and tertiary amines can be distinguished by Hinsberg reagent, which is
A:-Benzoyl chloride
B:-Benzene sulphonyl chloride
C:-Acetic anhydride
D:-Benzyl chloride
Ans: B
43:-The monomer of PVC is
A:-Ethene
B:-Vinyl chloride
C:-Styrene
D:-Tetra Fluoro ethane
Ans: B
44:-Tyndall effect is
A:-Scattering of light by colloidal particle
B:-Refraction of light by colloidal particle
C:-Absorption of light by colloidal particle
D:-Reflection of light by colloidal particle
Ans: A
45:-Which of the following battery is used in automobiles?
A:-Nickel-cadmium cell
B:-`"H_2-O_2"` fuel cell
C:-Lead storage battery
D:-Mercury cell
Ans: C
46:-Emulsion is an example of colloidal system of
A:-Liquid dispersed in gas
B:-Solid dispersed in gas
C:-Liquid dispersed in liquid
D:-Liquid dispersed in solid
Ans: C
47:-The volume of 1 mol of gas at STP is
A:-22.4 ml
B:-22.4 L
C:-2.24 ml
D:-2.24 L
Ans: B
48:-The oxidation number of sulphur in `"H_2SO_4"` is
A:-+5
B:-+4
C:-+6
D:-+2
Ans: C
49:-n = 3, l = 2 represent which orbital
A:-3s
B:-3d
C:-3p
D:-3f
Ans: B
50:-The protective action of colloids are expressed in terms of
A:-Gold Number
B:-Octane number
C:-Atomic number
D:-Cetane number
Ans: A
51:-Bronze is an alloy of
A:-Cu with Zn
B:-Cu with Ni
C:-Fe with Ni
D:-Cu with Sn
Ans: D
52:-Vitamin C is
A:-Cobalamine
B:-Riboflavin
C:-Calciferol
D:-Ascorbic acid
Ans: D
A:-Heat is more evenly distributed
B:-The boiling point of water inside the cooker is elevated
C:-The higher pressure tenderises the food
D:-The boiling point of water inside the cooker is depressed
Ans: B
22:-The galvanic cell which convert energy of combustion directly to electrical energy is called
A:-Fuel cell
B:-Primary cell
C:-Secondary cell
D:-Voltaic cell
Ans: A
23:-Haber process is used for the manufacture of
A:-Sulphuric acid
B:-Nitric acid
C:-Nitrogen
D:-Ammonia
Ans: D
24:-The group 13 element which is liquid during summer is
A:-Al
B:-In
C:-Ga
D:-Tl
Ans: C
25:-Intra molecular hydrogen bond exist in
A:-HF
B:-`H_(2)O`
C:-o-nitro phenol
D:-ethyl alcohol
Ans: C
26:-Which of the following shows both Schottky and Frenkel defect ?
A:-AgBr
B:-CsCl
C:-AgCl
D:-ZnS
Ans: A
27:-Bauxite is the ore of
A:-Iron
B:-Aluminium
C:-Copper
D:-Zinc
Ans: B
28:-How many kinds of space lattice are possible in a crystal?
A:-7
B:-23
C:-14
D:-21
Ans: C
29:-The law starting that ''the partial pressure of the gas in vapour phase is proportional to the mole fraction of the gas in the solution'' is known as
A:-Raoults law
B:-Dalton's law of partial pressure
C:-Ostwald's dilution law
D:-Henry's law
Ans: D
30:-The excess pressure that is applied to the solution to prevent the passage of solvent in to it through a semi permeable membrane is referred to as
A:-Partial pressure
B:-Critical pressure
C:-Osmotic pressure
D:-None of these
Ans: C
31:-The hybridisation of carbon in Graphite is
A:-`"dsp^2"`
B:-sp
C:-`"sp"^3`
D:-`"sp"^2`
Ans: D
32:-Isotonic solutions have
A:-Same osmotic pressure
B:-same freezing point
C:-same melting point
D:-same boiling point
Ans: A
33:-Best method to prevent corrosion of iron is
A:-making iron cathode
B:-making iron anode
C:-put it in saline water
D:-make it in contact with atmosphere
Ans: A
34:-The half life of first order reaction with rate constant 'K' is given by
A:-`([R_(0)])/(2K)`
B:-`([R_(0)])/(K)`
C:-`(0.693)/(2K)`
D:-`(0.693)/(K)`
Ans: D
35:-Unit of first order reaction is
A:-`S^(-1)`
B:-`mol L^(-1)S^-1`
C:-`mol^(-1)LS^(-1)`
D:-dimensionless
Ans: A
36:-Which of the following constitute Daniel cell?
A:-Zn-Hg cell
B:-Zn-Cu cell
C:-Zn-Ag cell
D:-Cu-Hg cell
Ans: B
37:-The correct formula for plaster of paris is
A:-`"CaSO_4.2H_2O"`
B:-`"CaSO_4"` .`"H_2O"`
C:-`"CaSO_4"` .`(1)/(2)` `"H_2O"`
D:-`"Ca_2SO_4"` . `"H_2O"`
Ans: C
38:-Permanent hardness of water is due to the presence of
A:-Bicarbonates of Na and K
B:-Bicarbonates of Ca and Mg
C:-Chlorides and sulphates of Ca and Mg
D:-Chlorides and sulphates of Na and K
Ans: C
39:-Role of a catalyst in a chemical reaction is
A:-To decrease activation energy
B:-To increase activation energy
C:-To increase heat of reaction
D:-To decrease heat of reaction
Ans: A
40:-Characteristics of transition element
A:-Show variable oxidation state
B:-Forms alloys
C:-Form coloured compounds
D:-All the above
Ans: D
41:-In [`"Ni(CO)_4"` ], the oxidation number of Nickel is
A:-+3
B:-+2
C:-+4
D:-Zero
Ans: D
42:-Primary, secondary and tertiary amines can be distinguished by Hinsberg reagent, which is
A:-Benzoyl chloride
B:-Benzene sulphonyl chloride
C:-Acetic anhydride
D:-Benzyl chloride
Ans: B
43:-The monomer of PVC is
A:-Ethene
B:-Vinyl chloride
C:-Styrene
D:-Tetra Fluoro ethane
Ans: B
44:-Tyndall effect is
A:-Scattering of light by colloidal particle
B:-Refraction of light by colloidal particle
C:-Absorption of light by colloidal particle
D:-Reflection of light by colloidal particle
Ans: A
45:-Which of the following battery is used in automobiles?
A:-Nickel-cadmium cell
B:-`"H_2-O_2"` fuel cell
C:-Lead storage battery
D:-Mercury cell
Ans: C
46:-Emulsion is an example of colloidal system of
A:-Liquid dispersed in gas
B:-Solid dispersed in gas
C:-Liquid dispersed in liquid
D:-Liquid dispersed in solid
Ans: C
47:-The volume of 1 mol of gas at STP is
A:-22.4 ml
B:-22.4 L
C:-2.24 ml
D:-2.24 L
Ans: B
48:-The oxidation number of sulphur in `"H_2SO_4"` is
A:-+5
B:-+4
C:-+6
D:-+2
Ans: C
49:-n = 3, l = 2 represent which orbital
A:-3s
B:-3d
C:-3p
D:-3f
Ans: B
50:-The protective action of colloids are expressed in terms of
A:-Gold Number
B:-Octane number
C:-Atomic number
D:-Cetane number
Ans: A
51:-Bronze is an alloy of
A:-Cu with Zn
B:-Cu with Ni
C:-Fe with Ni
D:-Cu with Sn
Ans: D
52:-Vitamin C is
A:-Cobalamine
B:-Riboflavin
C:-Calciferol
D:-Ascorbic acid
Ans: D
53:-When blue litmus is added to dil. HCl
A:-it changes to white
B:-it remains blue
C:-it becomes red
D:-it changes to green colour
Ans: C
54:-A gas is neither combustible nor supporter of combustion, turns most blue litmus paper red, used in cold drinks. The gas is:
A:-CO
B:-carbon dioxide
C:-hydrogen
D:-chlorine
Ans: B
55:-If we add phenolphthalein to dil.HCl :
A:-The solution turns pink
B:-The solution remains colourless
C:-The solution becomes green
D:-The solution becomes orange red
Ans: B
56:-You are advised not to see the SUN directly with your eye,because the converging light will destroy the :
A:-Retina
B:-Eye-ball
C:-Eye-lens
D:-Pupil
Ans: A
57:-“When physical condition remain the same, the electric current flowing through a conductor is directly proportional to the potential difference”. This law is called :
A:-Ohm’s law
B:-Ampere’s law
C:-Coulomb’s law
D:-Joule’s law
Ans: A
58:-Rheostat is used to vary:
A:-current
B:-potential difference
C:-power
D:-resistance
Ans: A
59:-Water movement against gravity is due to :
A:-Osmosis
B:-Respiration
C:-Photosynthesis
D:-Transpiration
Ans: D
60:-During rainy season,it is difficult to open and close doors and windows due to:
A:-Imbibition
B:-Endomosis
C:-Exomosis
D:-Diffusion
Ans: A
61:-The odour of sulphur dioxide gas is:
A:-Pungent
B:-Odourless
C:-Sweet smelling
D:-Foul smelling
Ans: A
62:-The problems of fluid statics are influenced by the following forces:
A:-gravity and viscous forces
B:-gravity and pressure forces
C:-viscous and surface tension forces
D:-gravity and surface tension forces
Ans: B
63:-Mercury is generally used in manometers for measuring:
A:-low pressure accurately
B:-large pressure accurately
C:-all pressures except the smaller ones
D:-very low pressures
Ans: C
64:-The flow in a river during the period of heavy rainfall is:
A:-steady,uniform,two-dimensional
B:-unsteady,uniform and three-dimensional
C:-unsteady,non-uniform and three-dimensional
D:-steady,non-uniform and three dimensional
Ans: C
65:-A pitot-tube is an instrument for measuring:
A:-pressure of flow
B:-discharge of fluid
C:-velocity of flow
D:-total energy
Ans: C
66:-The coefficient of discharge of a venturimeter lies within the limits:
A:-0.7-0.9
B:-0.6-0.8
C:-0.75-0.95
D:-0.95-0.99
Ans: D
67:-The Reynolds experiments for determining the character of flow in pipes involved:
A:-the measurement of velocity by pitot-tube
B:-measurement of flow only
C:-observation of the condition of dye -filament which become wavy or irregular at the onset of the turbulence.
D:-measurement of intensity of turbulence
Ans: C
68:-The laminar flow is characterized by:
A:-irregular motion of fluid particles
B:-fluid particles moving in layers parallel to the boundary layer
C:-high Reynolds number of flow
D:-existence of eddies
Ans: B
69:-The parameters which determines the friction factor for turbulent flow in rough pipe are:
A:-Froude number and relative roughness
B:-Froude number and Mach number
C:-Reynolds number and relative roughness
D:-Mach number and relative roughness
Ans: C
70:-In orifice flow, the vena contracta represents:
A:-the section where the jet has maximum flow area
B:-the location where the jet area is minimum , the streamlines parallel and the pressure atmospheric
C:-the section where the pressure is above atmospheric
D:-the opening of orifice itself
Ans: B
71:-What is the major use of carbon molecular sieve?
A:-separation of lower hydro-carbons
B:-adsorption of organics from drinking water
C:-separation of air to produce nitrogen
D:-separation of suspended impurities from air
Ans: C
72:-Rotameter is used for measuring:
A:-density of fluids
B:-velocity of fluids in pipes
C:-viscosity of fluids
D:-discharge of fluids
Ans: D
73:-2, 4, 6-trinitrophenol is also known as
A:-Salicylic acid
B:-Resorcinol
C:-Picric acid
D:-Cinnamic acid
Ans: C
74:-EDTA is an example of
A:-Monodentate ligand
B:-Hexadentate ligand
C:-Ambidentate ligand
D:-Chelate ligand
Ans: B
75:-Chloroform is
A:-`"CH_3Cl"`
B:-`"CHCl_3"`
C:-`"CH_2Cl_2"`
D:-`"CCl_4"`
Ans: B
76:-The total number of orbital possible for principal quantum number 'n' is
A:-n
B:-2n
C:-`"2n^2"`
D:-`"n^2"`
Ans: D
77:-Which of the following is an ambidentate ligand?
A:-`"H_2O"`
B:-`"NH_3"`
C:-CN
D:-CO
Ans: C
78:-Oxygen shows +2 oxidation state in the compound
A:-`"H_2O"`
B:-`"H_2O_2"`
C:-`"OF_2"`
D:-CaO
Ans: C
79:-R - X + Nal `->` R-l + NaX. This reaction is
A:-Finkelstein reaction
B:-Swarts reaction
C:-Wurtz reaction
D:-Fittig reaction
Ans: A
80:-Primary, Secondary and tertiary alcohols are distinguished by
A:-Lucas test
B:-Tollens test
C:-Fehling test
D:-Borsche's test
Ans: A
81:-Which of the following has the highest electron gain enthalpy?
A:-O
B:-S
C:-F
D:-Cl
Ans: D
82:-Shape of `"SF_6"` molecule is
A:-Tetrahedral
B:-Square planar
C:-Pyramidal
D:-Octahedral
Ans: D
83:-Which of the following compound is added to rectified spirit to make it unfit for drinking purpose?
A:-Acetic acid
B:-Methanol
C:-Chloroform
D:-Acetone
Ans: B
84:-Benzene diazonium chloride on reaction with warm water gives
A:-Phenol
B:-Benzene
C:-Toluene
D:-Benzaldehyde
Ans: A
85:-The catalyst used in contact process for the manufacture of `"H_2SO_4"` is
A:-Fe
B:-Ni
C:-`"V_2O_5"`
D:-Peroxides
Ans: C
86:-A carbohydrate which cannot be hydrolysed to simpler compound is called
A:-Mono saccharides
B:-Poly saccharides
C:-Disaccharides
D:-Oligo saccharides
Ans: A
87:-The Zig-Zag motion of colloid particle is known as
A:-Electro phorosis
B:-Electro-osmosis
C:-Coagulation
D:-Brownian movement
Ans: D
88:-Liquation is used for the refining of
A:-Low boiling metals
B:-High boiling metals
C:-Low melting metals
D:-High melting metals
Ans: C
89:-A process is said to be spontaneous if
A:-ΔH is -ve
B:-ΔS is +ve
C:-ΔG is -ve
D:-all the above
Ans: D
90:-Neutron was discovered by
A:-Chadwick
B:-Rutherford
C:-J.J. Thomson
D:-Neils Bohr
Ans: A
91:-`"^2^2Na"` contains
A:-11 electron
B:-22 electron
C:-22 protons
D:-22 neutrons
Ans: A
92:-Which of the following molecule has zero dipole moment?
A:-`"H_2O"`
B:-`"CO_2"`
C:-`"NH_3"`
D:-`"NF_3"`
Ans: B
93:-In an isothermal process which of the following is true?
A:-ΔV = 0
B:-Δq = 0
C:-ΔT = 0
D:-ΔP = 0
Ans: C
94:-Which of the following is water gas?
A:-`"CO+N_2"`
B:-`"N_2+H_2"`
C:-`"O_2+H_2"`
D:-`"CO+H_2"`
Ans: D
95:-Bond order is given by
A:-1/2 `"(N_b-N_a)"`
B:-1/2`"(N_a-N_b)"`
C:-2`"(N_a-N_b)"`
D:-2`"(N_b-N_a)"`
Ans: A
96:-At absolute zero of temperature
A:-temperature of gas is zero
B:-Volume of gas is zero
C:-Pressure of gas is zero
D:-Number of moles of gas is zero
Ans: B
97:-Hot tea in a thermo flask is an example of
A:-Closed system
B:-Isolated system
C:-Open system
D:-Cyclic system
Ans: B
98:-`"P^H"` of pure water at 298 K is
A:-6.9
B:-7.2 C:-7
D:-7.5
Ans: C
99:-Avogadro number is
A:-6.022 ×`10^(22)`
B:-0.6022 ×`10^(22)`
C:-0.6022 ×`10^(23)`
D:-6.022 ×`10^(23)`
Ans: D
100:-Azeotropes are
A:-Mixture having same composition in solid and liquid phase
B:-Mixture having same composition in liquid and vapour phase
C:-Mixture having same composition in solid and vapour phase
D:-All the above
Ans: B
CHEMICAL ENGINEERING- OLD QUESTION PAPERS
- Chemical Engineering Answer Key view (TNPSC 23-06-2012)
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- Chemical Engineering Answer Key view (TNPSC 01-08-2014)
- Chemical Engineering Answer Key view (TNPSC 24-04-2015a)
- Chemical Engineering Answer Key view (TNPSC 02-12-2014)
- Chemical Engineering Answer Key view (TNPSC 24-04-2015b)
- Chemical Engineering Answer Key view (TNPSC 24-04-2015c)
- Chemical Engineering Answer Key view (TNPSC 23-06-2012)
- Chemical Engineering Answer Key view (TNPSC 01-04-2014)
- Chemical Engineering Answer Key view (Rajasthan PSC 16-01-2016)
- Chemical Engineering Answer Key view (GATE 2016)