CHEMISTRY- PAGE 13
1. Froth floatation process for the concentration of the ores is an illustration of the practical application of ________.
(A) Absorption (B) Adsorption (C) Sedimentation (D) Coagulation
Ans: B
2. Main function of roasting is ________.
(A) To remove volatile substance (B) Slag formation (C) Oxidation (D) Reduction
Ans: A
3. Which one of the following sentence is incorrect for work?
(A) The work is zero if there is no change. (B) Work is path independent quantity.
(C) When work is done by the system, its energy decreases. (D) When work is done on the system, its energy increases.
Ans: B
4. 1 cal = _____ J.
(A) 4.234 J (B) 4.198 J (C) 3.134 J (D) 2.802 J
Ans: B
5. A catalytic poison is _____.
(A) An inhibitor (B) Autocatalyst (C) Induced catalyst (D) Heterogeneous catalyst
Ans: A
6. __________ is a biological catalyst.
(A) An enzyme (B) An amino acid (C) A carbohydrate (D) A nitrogen molecule
Ans: A
7. Which one of the following acts as a catalyst?
(A) Metals with non-variable valency (B) Metals with variable valency
(C) Inert gases (D) Non-metals with fixed valency.
Ans: B
8. Which one of the following elements have least atomic radius?
(A) B (B) C (C) P (D) Cl
Ans: B
9. How many litres of water must be added to 1 litre of an aqueous solution of HCl with a PH of 1 to create an aqueous solution with PH of 2?
(A) 0.9 L (B) 2.0 L (C) 9.0 L (D) 0.1 L
Ans: C
10. Synthesis of each molecule of glucose in photosynthesis involves
(A) 8 Molecules of ATP (B) 18 Molecules of ATP
(C) 10 Molecules of ATP (D) 6 Molecules of ATP
Ans: B
11. During depression of freezing point in a solution, which one of the following are in equilibrium?
(A) Liquid solvent, Solid solvent (B) Liquid solvent, Solid solute
(C) Liquid solute, Solid solute (D) Liquid solute, Solid solvent
Ans: C
12. Copper can be extracted from ________.
(A) Malachite (B) Galena (C) Dolomite (D) Kupfer nickel
Ans: A
13. Magnetic separation is used for increasing concentration of which one of the following?
(A) Calcite (B) Hard liver (C) Haematite (D) Magnesite
Ans: C
14. The chemical name of Aspirin is
A) Tartaric acid
B) Benzoic acid
C) Acetyl salicylic acid
D) Per chloric acid
Ans: C
15. The control rods is a nuclear reactor
(A) absorb neutrons
(B) accelerate neutrons
(C) slowdown neutrons
(D) absorb excess heat produced in the reactor
Ans: A
16. Which atom model suggests/includes the following statement?
“The electrons can revolve around the atomic nucleus only in those allowed circular orbits”
(A) Newton atom model
(B) Bohr Atom model
(C) Rutherford Atom model
(D) Sommerfield Atom model
Ans: B
17. Which of the following is a carbonate ore?
(A) Magnetite (B) Siderite (C) Rutile (D) Pyrolusite
Ans: B
18. Nitriding is the process of :
(A) heating steel with ammonia (B) heating steel with nitrogen oxides (C) heating steel with nitrogen gas (D) keeping steel in inert atmosphere
Ans: A
19. Which of the following is an acidic refractory material?
(A) Graphite (B) Silica (C) Carborundum (D) Dolomite
Ans: B
20. Addition of sodium dichromate to molten glass imparts _________ colour to glass.
(A) Green (B) Yellow (C) Red (D) Violet
Ans: A
21. Cinnabar is ore of :
(A) Pb (B) Hg (C) Sn (D) Ti
Ans: B
22. Alnico is an alloy of :
(A) Cu, Ni, Al, Co (B) Fe, Co, Al ,Ni (C) Al, Co, Ni (D) Al, Ni, Cu
Ans: B
23. Which one is direct fertilizer?
(A) Gypsum (B) Lime (C) sodium carbonate (D) Super phosphate
Ans: D
24. Which type of glass is used for making lenses?
(A) lead glass (B) soft glass (C) crooks glass (D) pyrex glass
Ans: C
25. Cupellation is involved in the metallurgy of :
(A) Sn (B) Ag (C) Zn (D) Al
Ans: B
26. Clay belongs to :
(A) orthosilicate (B) chain silicate (C) cyclic silicate (D) sheet silicate
Ans: D
27. In thermite process reducing agent employed is :
(A) Carbon (B) Aluminium (C) Magnesium (D) Chromium
Ans: A
28. Which of the following is true for solutions showing dissociation?
(A) Vant Hoff factor is less than one (B) Vant Hoff factor is greater than one
(C) Vant Hoff factor is equal to one (D) Vant Hoff factor is equal to zero
Ans: B
29. In cold countries ethylene glycol is added to water in radiators of automobiles during winter. This is to :
(A) lower the boiling point (B) lower the freezing point (C) reduce visocity (D) increase the vapour pressure
Ans: B
30. If 50 ml of 2N HCl is mixed with 50 ml of 2M KOH ,the solution will be :
(A) acidic (B) neutral (C) basic (D) cannot be predicted
Ans: B
31. pH of solution is 3.0 .If its hydrogen ion concentration is decreased by 100 times ,then the pH of the solution becomes :
(A) 1.0 (B) .03 (C) 5.0 (D) 9.0
Ans: C
32. Purple of Cassius is :
(A) colloidal solution of silver (B) colloidal solution of gold (C) colloidal solution of platinum (D) colloidal solution of starch
Ans: B
33. Heat of neutralization of strong acid and strong base is :
(A) – 57.1 KJ/mol (B) + 13.7 KJ/mol (C) – 13.7 KJ/mol (D) + 57.1 KJ/mol
Ans: A
34. Relationship between the molar specific heat at constant pressure (Cp) and the molar specific heat at constant volume (Cv) is :
(A) Cp + Cv = R
(B) Cp/Cv = R
(C) Cp – Cv = R
(D) Cp/Cv = l
Ans: C
35. Which of the following is true about the octane number of isooctane, n-butane and n-hexane?
(A) isooctane > n-hexane> n-butane (B) isooctane > n-butane> n-hexane
(C) n-hexane> n-butane> isooctane (D) n-hexane > isooctane> n-butane
Ans: B
36. First stage of coal formation is :
(A) Lignite (B) Bituminous (C) Peat (D) Anthracite
Ans: C
37. Which of the following is a secondary fuel?
(A) coal gas (B) natural gas (C) peat (D) petroleum
Ans: A
38. The reaction of isobutane and isobutene in presence of anhydrous HF at room temperature yields :
(A) isooctane (B) n-octane (C) n-decane (D) heptane
Ans: A
39. Sweetening of petroleum is the process of :
(A) desulphurisation (B) de-emulsification (C) addition of antiknocking agents (D) fractional distillation
Ans: A
40. The main components of natural gas is
(A) methane and butane (B) methane and ethane (C) methane and isooctane (D) butane and isooctane
Ans: B
41. Which of the following cannot be purified by sublimation?
(A) iodine (B) arsenic oxide (C) ammonium chloride (D) calcium chloride
Ans: D
42. Sulphur containing amino acid is :
(A) aspartic acid (B) leucine (C) glycine (D) cysteine
Ans: D
43. _________ is a maximum boiling azeotrope.
(A) 95% ethanol and 5% water (B) 68% nitric acid and 32% water
(C) 60% chloroform and 40% benzene (D) 50% ethanol and 50% water
Ans: B
44. Sesquiterpenoids contains _________ number of isoprene units.
(A) 1 (B) 2 (C) 3 (D) 4
Ans: C
45. Alkaloid nicotine contains _________ nucleus.
(A) pyridine (B) pyrrole (C) benzene (D) furan
Ans: A
46. Major fattyacid present in coconut oil is :
(A) caproic acid (B) stearic acid (C) oleic acid (D) lauric acid
Ans: D
47. Which one is not a drying agent?
(A) calcium chloride (B) calcium oxide (C) calcium sulphate (D) calcium carbonate
Ans: D
48. Oil of rose contains :
(A) citral (B) geraniol (C) camphor (D) coniine
Ans: B
49. Vinca alkaloids are used as _________ drugs.
(A) antimalarial (B) antibiotic (C) anticancer (D) antipyretic
Ans: C
50. A Molal solution is one that contains one mole of the solute in :
(A) 1 litre of solution (B) 100 gm of solvent (C) 1 litre of solvent (D) 22.4 litre of solvent
Ans: B
(A) Absorption (B) Adsorption (C) Sedimentation (D) Coagulation
Ans: B
2. Main function of roasting is ________.
(A) To remove volatile substance (B) Slag formation (C) Oxidation (D) Reduction
Ans: A
3. Which one of the following sentence is incorrect for work?
(A) The work is zero if there is no change. (B) Work is path independent quantity.
(C) When work is done by the system, its energy decreases. (D) When work is done on the system, its energy increases.
Ans: B
4. 1 cal = _____ J.
(A) 4.234 J (B) 4.198 J (C) 3.134 J (D) 2.802 J
Ans: B
5. A catalytic poison is _____.
(A) An inhibitor (B) Autocatalyst (C) Induced catalyst (D) Heterogeneous catalyst
Ans: A
6. __________ is a biological catalyst.
(A) An enzyme (B) An amino acid (C) A carbohydrate (D) A nitrogen molecule
Ans: A
7. Which one of the following acts as a catalyst?
(A) Metals with non-variable valency (B) Metals with variable valency
(C) Inert gases (D) Non-metals with fixed valency.
Ans: B
8. Which one of the following elements have least atomic radius?
(A) B (B) C (C) P (D) Cl
Ans: B
9. How many litres of water must be added to 1 litre of an aqueous solution of HCl with a PH of 1 to create an aqueous solution with PH of 2?
(A) 0.9 L (B) 2.0 L (C) 9.0 L (D) 0.1 L
Ans: C
10. Synthesis of each molecule of glucose in photosynthesis involves
(A) 8 Molecules of ATP (B) 18 Molecules of ATP
(C) 10 Molecules of ATP (D) 6 Molecules of ATP
Ans: B
11. During depression of freezing point in a solution, which one of the following are in equilibrium?
(A) Liquid solvent, Solid solvent (B) Liquid solvent, Solid solute
(C) Liquid solute, Solid solute (D) Liquid solute, Solid solvent
Ans: C
12. Copper can be extracted from ________.
(A) Malachite (B) Galena (C) Dolomite (D) Kupfer nickel
Ans: A
13. Magnetic separation is used for increasing concentration of which one of the following?
(A) Calcite (B) Hard liver (C) Haematite (D) Magnesite
Ans: C
14. The chemical name of Aspirin is
A) Tartaric acid
B) Benzoic acid
C) Acetyl salicylic acid
D) Per chloric acid
Ans: C
15. The control rods is a nuclear reactor
(A) absorb neutrons
(B) accelerate neutrons
(C) slowdown neutrons
(D) absorb excess heat produced in the reactor
Ans: A
16. Which atom model suggests/includes the following statement?
“The electrons can revolve around the atomic nucleus only in those allowed circular orbits”
(A) Newton atom model
(B) Bohr Atom model
(C) Rutherford Atom model
(D) Sommerfield Atom model
Ans: B
17. Which of the following is a carbonate ore?
(A) Magnetite (B) Siderite (C) Rutile (D) Pyrolusite
Ans: B
18. Nitriding is the process of :
(A) heating steel with ammonia (B) heating steel with nitrogen oxides (C) heating steel with nitrogen gas (D) keeping steel in inert atmosphere
Ans: A
19. Which of the following is an acidic refractory material?
(A) Graphite (B) Silica (C) Carborundum (D) Dolomite
Ans: B
20. Addition of sodium dichromate to molten glass imparts _________ colour to glass.
(A) Green (B) Yellow (C) Red (D) Violet
Ans: A
21. Cinnabar is ore of :
(A) Pb (B) Hg (C) Sn (D) Ti
Ans: B
22. Alnico is an alloy of :
(A) Cu, Ni, Al, Co (B) Fe, Co, Al ,Ni (C) Al, Co, Ni (D) Al, Ni, Cu
Ans: B
23. Which one is direct fertilizer?
(A) Gypsum (B) Lime (C) sodium carbonate (D) Super phosphate
Ans: D
24. Which type of glass is used for making lenses?
(A) lead glass (B) soft glass (C) crooks glass (D) pyrex glass
Ans: C
25. Cupellation is involved in the metallurgy of :
(A) Sn (B) Ag (C) Zn (D) Al
Ans: B
26. Clay belongs to :
(A) orthosilicate (B) chain silicate (C) cyclic silicate (D) sheet silicate
Ans: D
27. In thermite process reducing agent employed is :
(A) Carbon (B) Aluminium (C) Magnesium (D) Chromium
Ans: A
28. Which of the following is true for solutions showing dissociation?
(A) Vant Hoff factor is less than one (B) Vant Hoff factor is greater than one
(C) Vant Hoff factor is equal to one (D) Vant Hoff factor is equal to zero
Ans: B
29. In cold countries ethylene glycol is added to water in radiators of automobiles during winter. This is to :
(A) lower the boiling point (B) lower the freezing point (C) reduce visocity (D) increase the vapour pressure
Ans: B
30. If 50 ml of 2N HCl is mixed with 50 ml of 2M KOH ,the solution will be :
(A) acidic (B) neutral (C) basic (D) cannot be predicted
Ans: B
31. pH of solution is 3.0 .If its hydrogen ion concentration is decreased by 100 times ,then the pH of the solution becomes :
(A) 1.0 (B) .03 (C) 5.0 (D) 9.0
Ans: C
32. Purple of Cassius is :
(A) colloidal solution of silver (B) colloidal solution of gold (C) colloidal solution of platinum (D) colloidal solution of starch
Ans: B
33. Heat of neutralization of strong acid and strong base is :
(A) – 57.1 KJ/mol (B) + 13.7 KJ/mol (C) – 13.7 KJ/mol (D) + 57.1 KJ/mol
Ans: A
34. Relationship between the molar specific heat at constant pressure (Cp) and the molar specific heat at constant volume (Cv) is :
(A) Cp + Cv = R
(B) Cp/Cv = R
(C) Cp – Cv = R
(D) Cp/Cv = l
Ans: C
35. Which of the following is true about the octane number of isooctane, n-butane and n-hexane?
(A) isooctane > n-hexane> n-butane (B) isooctane > n-butane> n-hexane
(C) n-hexane> n-butane> isooctane (D) n-hexane > isooctane> n-butane
Ans: B
36. First stage of coal formation is :
(A) Lignite (B) Bituminous (C) Peat (D) Anthracite
Ans: C
37. Which of the following is a secondary fuel?
(A) coal gas (B) natural gas (C) peat (D) petroleum
Ans: A
38. The reaction of isobutane and isobutene in presence of anhydrous HF at room temperature yields :
(A) isooctane (B) n-octane (C) n-decane (D) heptane
Ans: A
39. Sweetening of petroleum is the process of :
(A) desulphurisation (B) de-emulsification (C) addition of antiknocking agents (D) fractional distillation
Ans: A
40. The main components of natural gas is
(A) methane and butane (B) methane and ethane (C) methane and isooctane (D) butane and isooctane
Ans: B
41. Which of the following cannot be purified by sublimation?
(A) iodine (B) arsenic oxide (C) ammonium chloride (D) calcium chloride
Ans: D
42. Sulphur containing amino acid is :
(A) aspartic acid (B) leucine (C) glycine (D) cysteine
Ans: D
43. _________ is a maximum boiling azeotrope.
(A) 95% ethanol and 5% water (B) 68% nitric acid and 32% water
(C) 60% chloroform and 40% benzene (D) 50% ethanol and 50% water
Ans: B
44. Sesquiterpenoids contains _________ number of isoprene units.
(A) 1 (B) 2 (C) 3 (D) 4
Ans: C
45. Alkaloid nicotine contains _________ nucleus.
(A) pyridine (B) pyrrole (C) benzene (D) furan
Ans: A
46. Major fattyacid present in coconut oil is :
(A) caproic acid (B) stearic acid (C) oleic acid (D) lauric acid
Ans: D
47. Which one is not a drying agent?
(A) calcium chloride (B) calcium oxide (C) calcium sulphate (D) calcium carbonate
Ans: D
48. Oil of rose contains :
(A) citral (B) geraniol (C) camphor (D) coniine
Ans: B
49. Vinca alkaloids are used as _________ drugs.
(A) antimalarial (B) antibiotic (C) anticancer (D) antipyretic
Ans: C
50. A Molal solution is one that contains one mole of the solute in :
(A) 1 litre of solution (B) 100 gm of solvent (C) 1 litre of solvent (D) 22.4 litre of solvent
Ans: B
51. The Indicator used in iodometric titration is :
(A) KI (B) Litmus (C) Methyl orange (D) Starch
Ans: D
52. In qualitative analysis cd is under :
(A) I group (B) II group (C) III group (D) IV group
Ans: B
53. A mixture when rubbed with organic acid smells like vinegar. It contains :
(A) sulphite (B) nitrate (C) nitrite (D) acetate
Ans: D
54. The basis principle of paper chromatography is :
(A) adsorption (B) partition (C) absorption (D) diffusion
Ans: B
55. Which parameter is measured in thermogravimetry?
(A) change in temperature (B) change in mass (C) reflectance (D) change in enthalpy
Ans: B
56. The reagent commonly used to determine hardness of water titrimetrically is : (A) Disodium salt of EDTA (B) Oxalic acid (C) Sodium thiosulphate (D) Sodium citrate
Ans: A
57. Calculate significant figures in 21.697 – 20.802 : (A) 2 (B) 4 (C) 3 (D) 5
Ans: C
58. Dimethyl Glyoxime is used for the test of —————— in alkaline medium. (A) Hg (B) Zn (C) Co (D) Ni
Ans: D
59. Scientific creativity originates from : (A) knowledge (B) various skills (C) experiments (D) imagination
Ans: D
60. Nebulization is a term associated with : (A) chromatography (B) colloids (C) atomic absorption spectroscopy (D) solvent extraction
Ans: C
61. Ozone layer is present in : (A) troposphere (B) stratosphere (C) mesosphere (D) exosphere
Ans: B
62. Which air pollutant is not released by automobiles? (A) 2SO (B) Hydrocarbon (C) Fly ash (D) CO
Ans: C
63. When huge amount of sewage is dumped in a river, the BOD will : (A) increase (B) decrease (C) remain unchanged (D) none of these
Ans: A
64. Which of the following is the uppermost region of the atmosphere? (A) stratosphere (B) troposphere (C) exosphere (D) none of these
Ans: C
65. Depletion of ozone layer causes : (A) blood cancer (B) lung cancer (C) skin cancer (D) breast cancer
Ans: C
66. Which property is measured in absorption spectrophotometry? (A) Absorption of radiation (B) Optical density of the solution (C) Refractive index (D) VoltageAns: B
67. Which of the following is most abundant hydrocarbon pollutant? (A) butane (B) ethane (C) methane (D) propane
Ans: C
68. Which is true about DDT? (A) Green house gas (B) A fertilizer (C) Bio degradable pollutant (D) Non-Biodegradable pollutant
Ans: D
69. Sewage water is purified by : (A) aquatic plants (B) micro organisms (C) light (D) fishes
Ans: B
70. Amino acid composition of protein is determined by : (A) GIC (B) AAS (C) Electrophoresis (D) Ion-exchange chromatographyAns: D
71. The polymer obtained from caprolactum is : (A) Terylene (B) Nylon-6 (C) Nylon-66 (D) PTFE
Ans: B
72. Plexi glass is a polymer of : (A) Methyl methacrylate (B) Acrolein (C) Acrylonitrile (D) Ethyl acrylate
Ans: A
73. Name a gas that causes Green house effect : (A) Oxygen (B) Nitrogen (C) Carbon di oxide (D) Hydrogen
Ans: C
74. Which one of the following is a hard detergent ? (A) Potassium Pthalate (B) Alkyl Benzene Sulphonate (C) Lauryl Ethoxylate (D) Sodium Stearate
Ans: B
75. Gun cotton is : (A) Cellulose Hydrochloride (B) Cellulose Acetate (C) Cellulose Chloride (D) Cellulose Nitrate
Ans: D
76. Flavour of pineapple can be obtained by mixing the additive : (A) Amyl acetate (B) Amyl oxalate (C) Ethyl Butyrate (D) Ethyl Acetate
Ans: C
77. Which one of the following is a naturally occurring dye ? (A) Azo dye (B) Vat dye (C) Alizarin (D) Indigo
Ans: D
78. The objective of ISO-9000 family of Quality management is : (A) Employee satisfaction (B) Skill enhancement (C) Customer satisfaction (D) Environmental issues
Ans: C
79. Soaps and detergents are : (A) Ionic Compounds (B) Non polar Compounds (C) Molecular compounds (D) Covalent compounds
Ans: A
80. When is a detergent more useful for cleaning than soap? (A) Removing grease (B) Emulsyfying oil dropllets (C) Cleaning in hard water (D) None of the answers are correct
Ans: C
81. Equanil is : (A) Artificial sweetener (B) Tranquilizer (C) Antihistamine (D) Antifertility drug
Ans: B
82. Polyethylene glycols are used in the preparation of which type of detergents? (A) Cationic detergents (B) Anionic detergents (C) Non- ionic detergents (D) Soaps
Ans: C
83. Which of the following chemicals can be added for sweetening of food items at cooking temperature and does not provide calories? (A) Sucrose (B) Glucose (C) Aspartame (D) Sucralose
Ans: D
84. Which of the following is NOT one of the twelve principles of green chemistry? (A) Using renewable feedstock (B) Designing safer chemicals and products (C) Avoiding the use of catalysts (D) Maximising atom economy
Ans: C
85. Green chemistry is also called as : (A) Life chemistry (B) Environmental Chemistry (C) Organic Chemistry (D) Sustainable Chemistry
Ans: D
86. _________ are greener than the conventional methods. (A) Electromagnetic waves (B) Micro waves (C) Ultra violet waves (D) Radio waves
Ans: B
87. Occupational Safety and Health Act (OSHA) was created for : (A) Reducing hazards (B) Insurance (C) Ecological development (D) EIA analysis
Ans: A
88. The bio diesel is the long chain of carbon atoms contains _________ group at one end. (A) Alcohol (B) Aldehyde (C) Ester (D) Ketone
Ans: C
89. Gas related to Bhopal tragedy was : (A) Potassium Isocyanate (B) Potassium Isothiocyanate (C) Methyl Isocyanate (D) Methyl Iso-thiocyanate
Ans: C
90. Which one of the following is not a condensation polymer? (A) Dacron (B) Neoprene (C) Melamine (D) Bakelite
Ans: B
91. Which of the following is a chain growth polymer? (A) Polystyrene (B) Nucleic acid (C) Protein (D) Starch
Ans: A
92. Presence of _________ in a dry gaseous fuel does not contribute to its calorific value. (A) Sulphur (B) Hydrogen (C) Oxygen (D) Carbon
Ans: C
93. Which of the following is not a permitted synthetic food colour? (A) Indigo carmine (B) Rhodamine B (C) Tartrazine (D) Erythrosine
Ans: B
94. The advantage of using conducting polymers in place of metals is their : (A) Cost (B) Light-weight (C) Thermal conductivity (D) Solubility
Ans: B
95. Laboratory gas is obtained by the cracking of : (A) Gasolene (B) Diesel (C) Fuel oil (D) Kerosene
Ans: D
96. Using Chromatogram as detector in Chromatography, a graph is obtained between _________ and time. (A) Quantity (B) Density (C) Concentration (D) Specific gravity
Ans: C
97. In photometers, the readings of the specimen are initially obtained in the form of which of the following parameters? (A) Transmittance (B) Absorption (C) Volume (D) Wavelengths
Ans: A
98. Which of the following organic compounds will have the highest intensity of response when introduced in a flame ionization detector? (A) Ethane (B) Butane (C) Methane (D) Propane
Ans: B
99. Which of the following hydrocarbon series are almost absent in crude petroleum? (A) Paraffins (B) Naphthenes (C) Aromatic (D) Olefins
Ans: D
(A) KI (B) Litmus (C) Methyl orange (D) Starch
Ans: D
52. In qualitative analysis cd is under :
(A) I group (B) II group (C) III group (D) IV group
Ans: B
53. A mixture when rubbed with organic acid smells like vinegar. It contains :
(A) sulphite (B) nitrate (C) nitrite (D) acetate
Ans: D
54. The basis principle of paper chromatography is :
(A) adsorption (B) partition (C) absorption (D) diffusion
Ans: B
55. Which parameter is measured in thermogravimetry?
(A) change in temperature (B) change in mass (C) reflectance (D) change in enthalpy
Ans: B
56. The reagent commonly used to determine hardness of water titrimetrically is : (A) Disodium salt of EDTA (B) Oxalic acid (C) Sodium thiosulphate (D) Sodium citrate
Ans: A
57. Calculate significant figures in 21.697 – 20.802 : (A) 2 (B) 4 (C) 3 (D) 5
Ans: C
58. Dimethyl Glyoxime is used for the test of —————— in alkaline medium. (A) Hg (B) Zn (C) Co (D) Ni
Ans: D
59. Scientific creativity originates from : (A) knowledge (B) various skills (C) experiments (D) imagination
Ans: D
60. Nebulization is a term associated with : (A) chromatography (B) colloids (C) atomic absorption spectroscopy (D) solvent extraction
Ans: C
61. Ozone layer is present in : (A) troposphere (B) stratosphere (C) mesosphere (D) exosphere
Ans: B
62. Which air pollutant is not released by automobiles? (A) 2SO (B) Hydrocarbon (C) Fly ash (D) CO
Ans: C
63. When huge amount of sewage is dumped in a river, the BOD will : (A) increase (B) decrease (C) remain unchanged (D) none of these
Ans: A
64. Which of the following is the uppermost region of the atmosphere? (A) stratosphere (B) troposphere (C) exosphere (D) none of these
Ans: C
65. Depletion of ozone layer causes : (A) blood cancer (B) lung cancer (C) skin cancer (D) breast cancer
Ans: C
66. Which property is measured in absorption spectrophotometry? (A) Absorption of radiation (B) Optical density of the solution (C) Refractive index (D) VoltageAns: B
67. Which of the following is most abundant hydrocarbon pollutant? (A) butane (B) ethane (C) methane (D) propane
Ans: C
68. Which is true about DDT? (A) Green house gas (B) A fertilizer (C) Bio degradable pollutant (D) Non-Biodegradable pollutant
Ans: D
69. Sewage water is purified by : (A) aquatic plants (B) micro organisms (C) light (D) fishes
Ans: B
70. Amino acid composition of protein is determined by : (A) GIC (B) AAS (C) Electrophoresis (D) Ion-exchange chromatographyAns: D
71. The polymer obtained from caprolactum is : (A) Terylene (B) Nylon-6 (C) Nylon-66 (D) PTFE
Ans: B
72. Plexi glass is a polymer of : (A) Methyl methacrylate (B) Acrolein (C) Acrylonitrile (D) Ethyl acrylate
Ans: A
73. Name a gas that causes Green house effect : (A) Oxygen (B) Nitrogen (C) Carbon di oxide (D) Hydrogen
Ans: C
74. Which one of the following is a hard detergent ? (A) Potassium Pthalate (B) Alkyl Benzene Sulphonate (C) Lauryl Ethoxylate (D) Sodium Stearate
Ans: B
75. Gun cotton is : (A) Cellulose Hydrochloride (B) Cellulose Acetate (C) Cellulose Chloride (D) Cellulose Nitrate
Ans: D
76. Flavour of pineapple can be obtained by mixing the additive : (A) Amyl acetate (B) Amyl oxalate (C) Ethyl Butyrate (D) Ethyl Acetate
Ans: C
77. Which one of the following is a naturally occurring dye ? (A) Azo dye (B) Vat dye (C) Alizarin (D) Indigo
Ans: D
78. The objective of ISO-9000 family of Quality management is : (A) Employee satisfaction (B) Skill enhancement (C) Customer satisfaction (D) Environmental issues
Ans: C
79. Soaps and detergents are : (A) Ionic Compounds (B) Non polar Compounds (C) Molecular compounds (D) Covalent compounds
Ans: A
80. When is a detergent more useful for cleaning than soap? (A) Removing grease (B) Emulsyfying oil dropllets (C) Cleaning in hard water (D) None of the answers are correct
Ans: C
81. Equanil is : (A) Artificial sweetener (B) Tranquilizer (C) Antihistamine (D) Antifertility drug
Ans: B
82. Polyethylene glycols are used in the preparation of which type of detergents? (A) Cationic detergents (B) Anionic detergents (C) Non- ionic detergents (D) Soaps
Ans: C
83. Which of the following chemicals can be added for sweetening of food items at cooking temperature and does not provide calories? (A) Sucrose (B) Glucose (C) Aspartame (D) Sucralose
Ans: D
84. Which of the following is NOT one of the twelve principles of green chemistry? (A) Using renewable feedstock (B) Designing safer chemicals and products (C) Avoiding the use of catalysts (D) Maximising atom economy
Ans: C
85. Green chemistry is also called as : (A) Life chemistry (B) Environmental Chemistry (C) Organic Chemistry (D) Sustainable Chemistry
Ans: D
86. _________ are greener than the conventional methods. (A) Electromagnetic waves (B) Micro waves (C) Ultra violet waves (D) Radio waves
Ans: B
87. Occupational Safety and Health Act (OSHA) was created for : (A) Reducing hazards (B) Insurance (C) Ecological development (D) EIA analysis
Ans: A
88. The bio diesel is the long chain of carbon atoms contains _________ group at one end. (A) Alcohol (B) Aldehyde (C) Ester (D) Ketone
Ans: C
89. Gas related to Bhopal tragedy was : (A) Potassium Isocyanate (B) Potassium Isothiocyanate (C) Methyl Isocyanate (D) Methyl Iso-thiocyanate
Ans: C
90. Which one of the following is not a condensation polymer? (A) Dacron (B) Neoprene (C) Melamine (D) Bakelite
Ans: B
91. Which of the following is a chain growth polymer? (A) Polystyrene (B) Nucleic acid (C) Protein (D) Starch
Ans: A
92. Presence of _________ in a dry gaseous fuel does not contribute to its calorific value. (A) Sulphur (B) Hydrogen (C) Oxygen (D) Carbon
Ans: C
93. Which of the following is not a permitted synthetic food colour? (A) Indigo carmine (B) Rhodamine B (C) Tartrazine (D) Erythrosine
Ans: B
94. The advantage of using conducting polymers in place of metals is their : (A) Cost (B) Light-weight (C) Thermal conductivity (D) Solubility
Ans: B
95. Laboratory gas is obtained by the cracking of : (A) Gasolene (B) Diesel (C) Fuel oil (D) Kerosene
Ans: D
96. Using Chromatogram as detector in Chromatography, a graph is obtained between _________ and time. (A) Quantity (B) Density (C) Concentration (D) Specific gravity
Ans: C
97. In photometers, the readings of the specimen are initially obtained in the form of which of the following parameters? (A) Transmittance (B) Absorption (C) Volume (D) Wavelengths
Ans: A
98. Which of the following organic compounds will have the highest intensity of response when introduced in a flame ionization detector? (A) Ethane (B) Butane (C) Methane (D) Propane
Ans: B
99. Which of the following hydrocarbon series are almost absent in crude petroleum? (A) Paraffins (B) Naphthenes (C) Aromatic (D) Olefins
Ans: D