CHEMISTRY- PAGE 11
1. Maximum permissible limit of nitrate nitrogen in drinking water as per WHO standard is :
(A) 45 mg/L (B) 5 mg/L (C) 10 mg/L (D) 25 mg/L
Ans: C
2. It is desirable that CRH of a fertilizer should be :
(A) High (B) Low (C) Very low (D) Medium
Ans: A
3. When a pesticide dose of 0.5 to 2.0 kg/ha is applied, its concentration in the upper soil layer is :
(A) 0.25 to 1.0 mg/kg (B) 0.5 to 2.0 mg/kg (C) 0.1 to 1.0 mg/kg (D) 1.0 to 2.0 mg/kg
Ans: A
4. Ammonia volatilization losses are of great importance in :
(A) Acidic soils (B) Soils with high CEC (C) Calcareous soils (D) Soils with high clay content
Ans: C
5. Producer gas contains :
(A) Hydrogen and carbon monoxide (B) Nitrogen and hydrogen (C) Carbon monoxide and nitrogen (D) All the above
Ans: B
6. On comparing with humic acid, fulvic acid has :
(A) More hydrophilic group (B) Higher carbon and lower oxygen content
(C) Higher molecular weight (D) More polymerized compounds
Ans: A
7. Amino acids are positively charged :
(A) At pH value above the isoelectric point (B) Under neutral pH (C) Under alkaline pH (D) At pH value below the isoelectric point
Ans: D
8. Feldspars belong to the silicate mineral group.
(A) Inosilicate (B) Cyclosilicate (C) Tektosilicate (D) Phyllosilicate
Ans: C
9. Bacillus comes under the group.
(A) Aerobes (B) Facultative anaerobes (C) Oligate anaerobes (D) Microaerobes
Ans: B
10. Average chlorine content in plant tissue.
(A) 0.1% (B) 20 mg/kg (C) 0.1 mg/kg (D) 100 mg/kg
Ans: D
11. Smectite group consists of the following mineral/minerals :
(A) Montmorillonite (B) Beidellite (C) Nontronite (D) All the above
Ans: D
12. White alkali soils have :
(A) pH > 8.5 (B) Neutral soluble salts (C) EC < 4.0 dS/m (D) ESP > 15% of CEC
Ans: B
13. Which one of the following is an easily weathered mineral :
(A) Feldspar (B) Quartz (C) Muscovite (D) Olivine
Ans: D
14. The dominant mineral in shale is :
(A) Clay (B) Quartz (C) Calcite (D) Feldspar
Ans: A
15. The net effect of adding organic matter to acidic soils is generally an :
(A) Increase or decrease in pH (B) Decrease in pH (C) Increase in pH (D) None of the above
Ans: C
16. How many groups of order 4 are there upto isomorphism ?
(A) 4 (B) 3 (C) 2 (D) 1
Ans: C
17. The contribution of organic matter of CEC is greatest for soils having :
(A) High complexation of aluminium and iron (B) Minerals with high charge density (C) Low clay content (D) None of the above
Ans: C
18. Approximate half life of 2,4-D in soil is :
(A) One month (B) One year (C) Six months (D) Five days
Ans: A
19. Strontium-90 behaves in soil much the same as :
(A) Potassium (B) Calcium (C) Magnesium (D) Iron
Ans: B
20. Ammonium ion moves through the plasma membrane primarily by :
(A) Active transport (B) Mass flow (C) Diffusion (D) All the above
Ans: C
21. The condition in which the ratio of chemical nutrients in ecosystem increases beyond optimal value is known as :
(A) Bioaccumulation (B) Eutrophication (C) Biomagnification (D) Pollution
Ans: B
22. Major sources of atmospheric sulfur.
(A) Oceans (B) Soils (C) Volcanic emissions (D) Soils and industry
Ans: D
23. Deficiency of __________ element is expected in organic soils due to the formation of stable complexes with organic matter.
(A) Zinc (B) Copper (C) Mn (D) Fe
Ans: B
24. Available water is held in the soil against a pressure of upto approximately __________ bar.
(A) 0.1 (B) 0.3 (C) 15 (D) 31
Ans: C
25. A soil to be designated as clay if it has a clay separate of :
(A) Not less than 40% (B) > 30% (C) 30 - 35% (D) > 20%
Ans: A
26. Particle density of soil is affected by :
(A) Fineness of particle of a given mineral (B) Arrangement of soil solids
(C) Organic matter content (D) All the above
Ans: C
27. Identify a molecule which can be used as soap :
(A) Calcium palmitate (B) Potassium adipate (C) Magnesium linoleate (D) Sodium stearate
Ans: C
28. NO3 reduction in plants is closely linked to :
(A) Photosynthesis (B) Respiration (C) Fatty acid metabolism (D) All the above
Ans: A
29. Cation exchange capacity of chlorite is same as that of __________.
(A) Montmorillonite (B) Illite (C) Vermicullite (D) None of the above
Ans: B
30. Nitrogenase enzyme consists of :
(A) 8 protein complex (B) 2 protein complex (C) 6 protein complex (D) 4 protein complex
Ans: D
31. Polyphenols are produced in soil during the mineralization of lignin.
(A) Under aerobic conditions with pH > 5.5 (B) Anaerobic environment (C) Acid conditions (D) Alkaline conditions
Ans: C
32. Which of the following is NOT a function of a food additive ?
(A) Maintaining the product taste (B) Keeping the nutritive value
(C) Controlling the pH (D) None of the above
Ans: D
33. The antibiotic effect of sulfadrugs is due to :
(A) The presence of sulphur which is an antibiotic (B) Their structural similarity with p-aminobenzoic acid amide
(C) Their ability to burst the cell walls of bacteria (D) Their reaction with folic acid
Ans: B
34. Montmorillonite has a unit layer charge of :
(A) 0.5 (B) 1.0 (C) 2.0 (D) None of the above
Ans: A
35. Zeta potential can be reduced by :
(A) Lowering of pH (B) Introducing multi charged ions (C) Adding simple salts (D) All the above
Ans: D
36. Which one of the following is a photosynthetic N fixing bacteria ?
(A) Azotobacter (B) Beijerinckia (C) Rhodospirillum (D) Clostridium
Ans: C
37. The most abundant form of organic P compound in soil is :
(A) Inositol phosphate (B) Phospholipid (C) Nucleic acid (D) Phosphoproteins
Ans: A
38. The first study on legume - Rhizobium symbiosis conducted in India by :
(A) Sen and Pal (B) V. Iswaran (C) N.V. Joshi (D) Boussingault
Ans: C
39. Environmental Protection Act came into force in the year :
(A) 1927 (B) 1948 (C) 1974 (D) 1986
Ans: D
40. The Universal Soil Loss Equation was developed by :
(A) Wischmeier and Smith (B) Chepil and Woodruff (C) Sharma and Prasad (D) Dhruva Narayana
Ans: A
41. The effective nuclear charge felt by the 4s electron of Mn atom is :
(A) 3.25 (B) 3.60 (C) 5.1 (D) 1.65
Ans: B
42. Which among the following is the most appropriate statement(s) ?
(I) Bromides have higher lattice energies and higher stabilities.
(II) The Solubility of ionic compounds in polar solvents decreases with decrease in the degree of polarisation.
(III) The hardness of ionic compounds increases with increase in the degree of polarisation.
(IV) The solubility of ionic compounds in polar solvents decreases with increase in the degree of polarization.
(V) Bromides have lesser lattice energies and higher stabilities.
(A) Statement (V) is correct.
(B) Statements (I) and (II) are correct.
(C) Statements (I) and (IV) are correct.
(D) Statements (I), (III) and (IV) are correct.
Ans: C
43. The compound showing insecticidal properties is :
(A) hexachlorobenzene (B) β-hexachlorocyclohexane
(C) γ-hexachlorocyclohexane (D) θ-hexachlorocyclohexane
Ans: C
44. Choose the incorrect pair :
(A) Sharp transition and fluorescence in lanthanides
(B) d-d transition and colour of the compounds
(C) Charge transfer and high molar absorption coefficient
(D) High magnetic moment among lanthanides and Samarium (III)
Ans: D
45. In the pressure range 1 kPa to 100 kPa, the Hill constants for Hemoglobin and Myoglobin are :
(A) 2.8 and 1.0 respectively (B) 1.0 and 3.0 respectively
(C) 4.0 and 1.0 respectively (D) 1.0 and 4.0 respectively
Ans: A
46. In the most stable conformation of trans-1-t-butyl-3-methylcyclohexane, the t-butyl group at C1 and methyl group at C3 are :
(A) Equatorial and axial respectively (B) Axial and equatorial respectively
(C) Equatorial and equatorial respectively (D) Axial and axial respectively
Ans: A
47. The reaction in which nitrene is not an intermediate is :
(A) Curtius reaction (B) Arndt-Eistert reaction (C) Hoffman reaction (D) Schmidt reaction
Ans: B
48. The reaction used for the conversion of an aldose into the next higher ketose is :
(A) Wohl’s Method (B) Ruff’s Method (C) Wolfram’s Method (D) Sowden-Fischer Synthesis
Ans: C
49. The intermediate associated with Wolff rearrangement reaction is :
(A) Nitrene (B) Ketene (C) Carbene (D) Carbanion
Ans: B
50. Which of the following vitamins and their deficiency diseases are not correctly matched ?
(A) Vitamin C - Scurvy (B) Vitamin B12 - Pernicious Anemia
(C) Vitamin B4 - Pellagra (D) Vitamin B6 - Beri-beri
Ans: D
(A) 45 mg/L (B) 5 mg/L (C) 10 mg/L (D) 25 mg/L
Ans: C
2. It is desirable that CRH of a fertilizer should be :
(A) High (B) Low (C) Very low (D) Medium
Ans: A
3. When a pesticide dose of 0.5 to 2.0 kg/ha is applied, its concentration in the upper soil layer is :
(A) 0.25 to 1.0 mg/kg (B) 0.5 to 2.0 mg/kg (C) 0.1 to 1.0 mg/kg (D) 1.0 to 2.0 mg/kg
Ans: A
4. Ammonia volatilization losses are of great importance in :
(A) Acidic soils (B) Soils with high CEC (C) Calcareous soils (D) Soils with high clay content
Ans: C
5. Producer gas contains :
(A) Hydrogen and carbon monoxide (B) Nitrogen and hydrogen (C) Carbon monoxide and nitrogen (D) All the above
Ans: B
6. On comparing with humic acid, fulvic acid has :
(A) More hydrophilic group (B) Higher carbon and lower oxygen content
(C) Higher molecular weight (D) More polymerized compounds
Ans: A
7. Amino acids are positively charged :
(A) At pH value above the isoelectric point (B) Under neutral pH (C) Under alkaline pH (D) At pH value below the isoelectric point
Ans: D
8. Feldspars belong to the silicate mineral group.
(A) Inosilicate (B) Cyclosilicate (C) Tektosilicate (D) Phyllosilicate
Ans: C
9. Bacillus comes under the group.
(A) Aerobes (B) Facultative anaerobes (C) Oligate anaerobes (D) Microaerobes
Ans: B
10. Average chlorine content in plant tissue.
(A) 0.1% (B) 20 mg/kg (C) 0.1 mg/kg (D) 100 mg/kg
Ans: D
11. Smectite group consists of the following mineral/minerals :
(A) Montmorillonite (B) Beidellite (C) Nontronite (D) All the above
Ans: D
12. White alkali soils have :
(A) pH > 8.5 (B) Neutral soluble salts (C) EC < 4.0 dS/m (D) ESP > 15% of CEC
Ans: B
13. Which one of the following is an easily weathered mineral :
(A) Feldspar (B) Quartz (C) Muscovite (D) Olivine
Ans: D
14. The dominant mineral in shale is :
(A) Clay (B) Quartz (C) Calcite (D) Feldspar
Ans: A
15. The net effect of adding organic matter to acidic soils is generally an :
(A) Increase or decrease in pH (B) Decrease in pH (C) Increase in pH (D) None of the above
Ans: C
16. How many groups of order 4 are there upto isomorphism ?
(A) 4 (B) 3 (C) 2 (D) 1
Ans: C
17. The contribution of organic matter of CEC is greatest for soils having :
(A) High complexation of aluminium and iron (B) Minerals with high charge density (C) Low clay content (D) None of the above
Ans: C
18. Approximate half life of 2,4-D in soil is :
(A) One month (B) One year (C) Six months (D) Five days
Ans: A
19. Strontium-90 behaves in soil much the same as :
(A) Potassium (B) Calcium (C) Magnesium (D) Iron
Ans: B
20. Ammonium ion moves through the plasma membrane primarily by :
(A) Active transport (B) Mass flow (C) Diffusion (D) All the above
Ans: C
21. The condition in which the ratio of chemical nutrients in ecosystem increases beyond optimal value is known as :
(A) Bioaccumulation (B) Eutrophication (C) Biomagnification (D) Pollution
Ans: B
22. Major sources of atmospheric sulfur.
(A) Oceans (B) Soils (C) Volcanic emissions (D) Soils and industry
Ans: D
23. Deficiency of __________ element is expected in organic soils due to the formation of stable complexes with organic matter.
(A) Zinc (B) Copper (C) Mn (D) Fe
Ans: B
24. Available water is held in the soil against a pressure of upto approximately __________ bar.
(A) 0.1 (B) 0.3 (C) 15 (D) 31
Ans: C
25. A soil to be designated as clay if it has a clay separate of :
(A) Not less than 40% (B) > 30% (C) 30 - 35% (D) > 20%
Ans: A
26. Particle density of soil is affected by :
(A) Fineness of particle of a given mineral (B) Arrangement of soil solids
(C) Organic matter content (D) All the above
Ans: C
27. Identify a molecule which can be used as soap :
(A) Calcium palmitate (B) Potassium adipate (C) Magnesium linoleate (D) Sodium stearate
Ans: C
28. NO3 reduction in plants is closely linked to :
(A) Photosynthesis (B) Respiration (C) Fatty acid metabolism (D) All the above
Ans: A
29. Cation exchange capacity of chlorite is same as that of __________.
(A) Montmorillonite (B) Illite (C) Vermicullite (D) None of the above
Ans: B
30. Nitrogenase enzyme consists of :
(A) 8 protein complex (B) 2 protein complex (C) 6 protein complex (D) 4 protein complex
Ans: D
31. Polyphenols are produced in soil during the mineralization of lignin.
(A) Under aerobic conditions with pH > 5.5 (B) Anaerobic environment (C) Acid conditions (D) Alkaline conditions
Ans: C
32. Which of the following is NOT a function of a food additive ?
(A) Maintaining the product taste (B) Keeping the nutritive value
(C) Controlling the pH (D) None of the above
Ans: D
33. The antibiotic effect of sulfadrugs is due to :
(A) The presence of sulphur which is an antibiotic (B) Their structural similarity with p-aminobenzoic acid amide
(C) Their ability to burst the cell walls of bacteria (D) Their reaction with folic acid
Ans: B
34. Montmorillonite has a unit layer charge of :
(A) 0.5 (B) 1.0 (C) 2.0 (D) None of the above
Ans: A
35. Zeta potential can be reduced by :
(A) Lowering of pH (B) Introducing multi charged ions (C) Adding simple salts (D) All the above
Ans: D
36. Which one of the following is a photosynthetic N fixing bacteria ?
(A) Azotobacter (B) Beijerinckia (C) Rhodospirillum (D) Clostridium
Ans: C
37. The most abundant form of organic P compound in soil is :
(A) Inositol phosphate (B) Phospholipid (C) Nucleic acid (D) Phosphoproteins
Ans: A
38. The first study on legume - Rhizobium symbiosis conducted in India by :
(A) Sen and Pal (B) V. Iswaran (C) N.V. Joshi (D) Boussingault
Ans: C
39. Environmental Protection Act came into force in the year :
(A) 1927 (B) 1948 (C) 1974 (D) 1986
Ans: D
40. The Universal Soil Loss Equation was developed by :
(A) Wischmeier and Smith (B) Chepil and Woodruff (C) Sharma and Prasad (D) Dhruva Narayana
Ans: A
41. The effective nuclear charge felt by the 4s electron of Mn atom is :
(A) 3.25 (B) 3.60 (C) 5.1 (D) 1.65
Ans: B
42. Which among the following is the most appropriate statement(s) ?
(I) Bromides have higher lattice energies and higher stabilities.
(II) The Solubility of ionic compounds in polar solvents decreases with decrease in the degree of polarisation.
(III) The hardness of ionic compounds increases with increase in the degree of polarisation.
(IV) The solubility of ionic compounds in polar solvents decreases with increase in the degree of polarization.
(V) Bromides have lesser lattice energies and higher stabilities.
(A) Statement (V) is correct.
(B) Statements (I) and (II) are correct.
(C) Statements (I) and (IV) are correct.
(D) Statements (I), (III) and (IV) are correct.
Ans: C
43. The compound showing insecticidal properties is :
(A) hexachlorobenzene (B) β-hexachlorocyclohexane
(C) γ-hexachlorocyclohexane (D) θ-hexachlorocyclohexane
Ans: C
44. Choose the incorrect pair :
(A) Sharp transition and fluorescence in lanthanides
(B) d-d transition and colour of the compounds
(C) Charge transfer and high molar absorption coefficient
(D) High magnetic moment among lanthanides and Samarium (III)
Ans: D
45. In the pressure range 1 kPa to 100 kPa, the Hill constants for Hemoglobin and Myoglobin are :
(A) 2.8 and 1.0 respectively (B) 1.0 and 3.0 respectively
(C) 4.0 and 1.0 respectively (D) 1.0 and 4.0 respectively
Ans: A
46. In the most stable conformation of trans-1-t-butyl-3-methylcyclohexane, the t-butyl group at C1 and methyl group at C3 are :
(A) Equatorial and axial respectively (B) Axial and equatorial respectively
(C) Equatorial and equatorial respectively (D) Axial and axial respectively
Ans: A
47. The reaction in which nitrene is not an intermediate is :
(A) Curtius reaction (B) Arndt-Eistert reaction (C) Hoffman reaction (D) Schmidt reaction
Ans: B
48. The reaction used for the conversion of an aldose into the next higher ketose is :
(A) Wohl’s Method (B) Ruff’s Method (C) Wolfram’s Method (D) Sowden-Fischer Synthesis
Ans: C
49. The intermediate associated with Wolff rearrangement reaction is :
(A) Nitrene (B) Ketene (C) Carbene (D) Carbanion
Ans: B
50. Which of the following vitamins and their deficiency diseases are not correctly matched ?
(A) Vitamin C - Scurvy (B) Vitamin B12 - Pernicious Anemia
(C) Vitamin B4 - Pellagra (D) Vitamin B6 - Beri-beri
Ans: D
51. The reaction used for the synthesis of α-amino acids is :
(A) Schmidt reaction (B) Hoffman’s degradation reaction (C) Strecker’s synthesis (D) Carius method
Ans: C
52. The number of significant figures in the following measurement is : Temperature=0.0045 deg C
(A) 4 (B) 2 (C) 5 (D) 1
Ans: B
53. Choose the correct sentence(s) regarding accuracy and precision.
(I) A precise value shows the agreement between several experiments.
(II) The precise value must be in agreement with true value.
(III) Standard deviation is used to express the accuracy of experiments.
(IV) Error distribution curves for a more accurate set of results is in close proximity to the true value.
(A) All the statements are correct
(B) Statements (I) and (IV) are correct
(C) Statements (I) and (III) are correct
(D) Statements (II) and (IV) are correct
Ans: B
54. The sharp band at wavelength 528 nm in the UV - Vis absorption spectra of KMnO4 can be attributed to :
(A) LMCT transition (B) d-d transition (C) MLCT transition (D) Jahn-Teller distortion
Ans: A
55. The correct order of decreasing vibrational frequency for C–Cl, C–C, C–Br, C–H and C–O is :
(A) C–Br, C–Cl, C–O, C–H, C–C
(B) C–O, C–H, C–Br, C–Cl, C–C
(C) C–Cl, C–Br, C–O, C–C, C–H
(D) C–H, C–C, C–O, C–Cl, C–Br
Ans: D
56. In the mass spectrum of CH2Cl2, a group of three peaks at m/z = 84, 86 and 88 in a ratio 9 : 6 : 1 are assigned to the parent ion. These peaks are due to :
(A) The two Cl atoms are cleaved easily
(B) The hydrogens can be cleaved easily
(C) Cl has two isotopes
(D) Cl has three isotopes
Ans: C
57. Which of the following statement(s) is true for condensation polymers ?
(I) Polymer structure contains only C–C bonds
(II) Monomers used can be bifunctional or polyfunctional
(III) A small by-product molecule is eliminated
(A) All are correct
(B) Only (III) is correct
(C) (I) and (II) are correct
(D) (II) and (III) are correct
Ans: D
58. Which of the following is an auxochrome ?
(A) –OH (B) –NO2 (C) –N=N– (D) –N=O
Ans: A
59. According to ohm’s law, the relationship between current flowing through conductor and the voltage across the conductor is:
60. The temperature of water boiling in a vessel can be raised by
61. The SI unit of luminous intensity is
62. The modern acid dampening solutions usually have a pH in the range of
63. According to Lewis theory of Acids and Bases Lewis acid is defined as
64. ___________are defined as solutions which contain hydrogen and oxygen combined to form hydroxyl ions which have a negative electrical change
A. Acid B. Alkalis C. Solvent D. Crystallisation
Ans:B
65. During Strenuous exercise the muscles do not get sufficient oxygen to meet its energy needs and also there is an accumulation of an acid. This causes muscle fatigue. Which is that acid ?
(A) Lactic acid (B) Carbonic acid (C) Formic acid (D) Phosphoric acid
Ans: A
66. Usually Lime pickle is not stored in aluminium vessels, because an acid present in lime reacts with aluminium, produces a gas. The gas produced is :
(A) Carbon dioxide (B) Hydrogen (C) Chlorine (D) Nitrogen
Ans: B
67. Choose from the following, a chemical substance that added for getting Yellow colour to food material :
(A) Erythrosine (B) Vanillin (C) Phosphoric acid (D) Tartrazine
Ans: D
68. How much quantity ofCO2 reaches atmosphere, when 1 kg methane is burnt ?
(A) 3.03 kg (B) 3.50kg (C) 1.25 kg (D) 2.75 kg
Ans: D
69. Speed of sound is higher in which of the following mediums ?
(A) Liquids (B) Solids (C) Gases (D) All of these
Ans: B
70. Which type of light waves/rays used in remote control and night vision camera ?
(A) Ultraviolet (B) X-rays (C) Infrared (D) Microwaves
Ans: C
71. Reduction is addition of
(A) Hydrogen (B) Water (C) Oxygen (D) Benzene
Ans: A
72. Which of the following are the gases whose presence in high concentration in the lower strata of atmosphere, is chiefly responsible for causing the Greenhouse effect?
1. Sulphur dioxide 2. Carbon dioxide 3. Chlorofluorocarbons 4. Nitrogen
Select the correct answer using the code given below:
(a) 1 and 2 (b) 2 and 3 (c) 3 and 4 (d) 2 and 4
Ans: B
73. Consider the following electric lamps:
1. C F L 2. Incandescent bulb 3. L E D lamp
Indiscriminate or improper disposal of which of the above causes/ cause mercury pollution in the environment?
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3
Ans: A
74. Consider the following substances: 1. Acesulfame potassium 2. Polyethlene glycol 3. Saccharin 4. Sucralose
Which of the above are used as sugar substitutes in foods?
(a) 1 and 2 only (b) 2, 3 and 4 only (c) 1, 3 and 4 only (d) 1, 2, 3 and 4
Ans: C
75. Ozone is
(a) an isotope of Oxygen (b) an isomer of Oxygen
(c) an allotrope of Oxygen (d) a hydrate of Oxygen
Ans: C
76. Why are phosphates added to soft drinks?
(a) To give the drinks a tangy taste.
(b) To add sparkle to the drinks.
(c) To supplement the drinks with certain mineral nutrients.
(d) To give dark brown or chocolate colour to the drinks.
Ans: A
77.Which of the following is/are used as decoloring agent in the refinement of sugar?
1. Dimethylamine epichlorohydin copolymer 2. Sodium stearoyl lactylate
Select the correct answer using the code given below:
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
Ans: A
78. Which one of the following is not used as a food preservative?
(a) Benzoic acid (b) Citric acid (c) Ethylene dichloride (d) Sodium chloride
Ans: C
79. Use of calcium carbide for the artificial ripening of fruits is banned but it is often reported to be illegally used. What is/are the likely health hazards of exposure to this chemical?
1. Permanent damage to the eyes
2. Pulmonary edema
3. Irritation of mouth, throat and nose
Select the correct answer using the codes given below:
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3
Ans: D
80. Which of the following statements is correct regarding Malachite that is used as food adulterant?
(a) It is used for ripening of mangoes and custard apple. (b) It is used to make green vegetables shiny.
(c) It is added to sugar to increase its volume and weight. (d) It is added to tea dust to improve its flavour.
Ans: B
81. Calcium carbide is used
(a) as rodent killer (b) as insecticide (c) for fruit ripening (d) for lowering soil salinity
Ans: C
82. With reference to food additives, consider the following statements:
1. Benzoic acid and sorbic acid function as antimicrobial agents.
2. Citric acid is used to suppress browning of fruits and vegetables.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: C
83. With reference to the use of microorganisms in food processing, consider the following statements:
1. Lactic acid bacteria can ferment any monosaccharide or polysaccharide into lactic acid.
2. Baker’s yeast is manufactured from single cell isolates of Saccharomyces cerevisiae.
Which of the statements given above is/are correct?
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
Ans: B
84. Which of the following chemicals is/are used in food preservation?
1. Calcium propionate 2. Potassium metabisulphite 3. Lecithin
Select the correct answer using the code given below:
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None of them is used in food preservation
Ans: C
85:- The hydrocarbon present in LNG is
A:-Butane B:-Ethane C:- Methane D:-Propane
Ans: C
86- The most abundant element in the earth crust
A:- A|uminium B:-Hydrogen C:- Si|icon D:- Oxygen
Ans: D
87:- The type of waves used by artificial satellites for communication purpose
A:-Microwaves B:-AM Radio waves C:- F M Radio waves D:-X Rays
Ans: A
88:-Which of the following e waste component poses a health hazard?
A:-Lead B:-Mercury C:-Cadmium D:-All of the above
Ans: D
89. The Allotrope of carbon which is used as a moderator in nuclear reactors?
(A) Graphite (B) Fullerene (C) Graphene (D) Charcoal
Ans: A
90. Which is the major component of natural gas?
(A) Butane (B) Methane (C) Hydrogen (D) Carbon dioxide
Ans: B
91. Example of a semiconductor :
(A) Silicon (B) Copper (C) Iron (D) Aluminium
Ans: A
92. The catalyst used in the manufacture of Sulphuric Acid :
(A) Manganese Dioxide (B) Vanadium Pentoxide (C) Phosphoric Acid (D) Zinc Oxide
Ans: B
93. The compound used to regulate the setting time of cement :
(A) Limestone (B) Silicon dioxide (C) Gypsum (D) Calcium oxide
Ans: C
94. Sulphide ores of metals are usually concentrated by froth flotation process. Which one of the following sulphide ores offer an exception and its concentrated by chemical leaching?
(a) Galena (b) Copper pyrite (c) Sphalerite (d) Argentite
Ans: D
95. If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately
(a) 45 minutes (b) 60 minutes (c) 40 minutes (d) 50 minutes (log 4 = 0.60, log 5 = 0.69)
Ans: A
96. In which of the following the hydration energy is higher than the lattice energy?
(a) MgSO4 (b) RaSO4 (c) SrSO4 (d) BaSO4
Ans: A
97. Which of the compounds with molecular formula C5H10 yields acetone on ozonolysis?
(a) 3-methyl-1-butene (b) cyclopentane
(c) 2-methyl-1-butene (d) 2-methyl-2-butene.
Ans: D
98. Which one of the following orders correctly represents the increasing acid strengths of the given acids?
(a) HOClO < HOCl < HOClO3 < HOClO2
(b) HOClO2 < HOClO3 < HOClO < HOCl
(c) HOClO3 < HOClO2 < HOClO < HOCl
(d) HOCl < HOClO < HOClO2 < HOClO3
Ans: D
99. Consider the following sets of quantum numbers: n l m s
(i) 3 0 0 + 1/2
(ii) 2 2 1 + 1/2
(iii) 4 3 – 2 – 1/2
(iv) 1 0 – 1 – 1/2
(v) 3 2 3 + 1/2
Which of the following sets of quantum number is not possible?
(a) (i), (ii), (iii) and (iv)
(b) (ii), (iv) and (v)
(c) (i) and (iii)
(d) (ii), (iii) and (iv)
Ans: B
100. Which one of the following polymers is prepared by condensation polymerisation?
(a) Teflon (b) Natural rubber (c) Styrene (d) Nylon-66
Ans: D
(A) Schmidt reaction (B) Hoffman’s degradation reaction (C) Strecker’s synthesis (D) Carius method
Ans: C
52. The number of significant figures in the following measurement is : Temperature=0.0045 deg C
(A) 4 (B) 2 (C) 5 (D) 1
Ans: B
53. Choose the correct sentence(s) regarding accuracy and precision.
(I) A precise value shows the agreement between several experiments.
(II) The precise value must be in agreement with true value.
(III) Standard deviation is used to express the accuracy of experiments.
(IV) Error distribution curves for a more accurate set of results is in close proximity to the true value.
(A) All the statements are correct
(B) Statements (I) and (IV) are correct
(C) Statements (I) and (III) are correct
(D) Statements (II) and (IV) are correct
Ans: B
54. The sharp band at wavelength 528 nm in the UV - Vis absorption spectra of KMnO4 can be attributed to :
(A) LMCT transition (B) d-d transition (C) MLCT transition (D) Jahn-Teller distortion
Ans: A
55. The correct order of decreasing vibrational frequency for C–Cl, C–C, C–Br, C–H and C–O is :
(A) C–Br, C–Cl, C–O, C–H, C–C
(B) C–O, C–H, C–Br, C–Cl, C–C
(C) C–Cl, C–Br, C–O, C–C, C–H
(D) C–H, C–C, C–O, C–Cl, C–Br
Ans: D
56. In the mass spectrum of CH2Cl2, a group of three peaks at m/z = 84, 86 and 88 in a ratio 9 : 6 : 1 are assigned to the parent ion. These peaks are due to :
(A) The two Cl atoms are cleaved easily
(B) The hydrogens can be cleaved easily
(C) Cl has two isotopes
(D) Cl has three isotopes
Ans: C
57. Which of the following statement(s) is true for condensation polymers ?
(I) Polymer structure contains only C–C bonds
(II) Monomers used can be bifunctional or polyfunctional
(III) A small by-product molecule is eliminated
(A) All are correct
(B) Only (III) is correct
(C) (I) and (II) are correct
(D) (II) and (III) are correct
Ans: D
58. Which of the following is an auxochrome ?
(A) –OH (B) –NO2 (C) –N=N– (D) –N=O
Ans: A
59. According to ohm’s law, the relationship between current flowing through conductor and the voltage across the conductor is:
- Equal
- Directly proportional
- Indirectly proportional
- Lesser
60. The temperature of water boiling in a vessel can be raised by
- Adding pieces of porous solid to the water
- Adding salt to the water
- Decreasing the pressure in the vessel
- Heating the vessel more strongly
61. The SI unit of luminous intensity is
- Newton
- Pascal
- Candela
- Kelvin
62. The modern acid dampening solutions usually have a pH in the range of
- 1.5-2.5
- 3.5-4.5
- 10.5-12.5
- 6.5-8.5
63. According to Lewis theory of Acids and Bases Lewis acid is defined as
- An electron pair acceptor
- An electron pair donor
- A proton pair acceptor
- A proton pair donor
64. ___________are defined as solutions which contain hydrogen and oxygen combined to form hydroxyl ions which have a negative electrical change
A. Acid B. Alkalis C. Solvent D. Crystallisation
Ans:B
65. During Strenuous exercise the muscles do not get sufficient oxygen to meet its energy needs and also there is an accumulation of an acid. This causes muscle fatigue. Which is that acid ?
(A) Lactic acid (B) Carbonic acid (C) Formic acid (D) Phosphoric acid
Ans: A
66. Usually Lime pickle is not stored in aluminium vessels, because an acid present in lime reacts with aluminium, produces a gas. The gas produced is :
(A) Carbon dioxide (B) Hydrogen (C) Chlorine (D) Nitrogen
Ans: B
67. Choose from the following, a chemical substance that added for getting Yellow colour to food material :
(A) Erythrosine (B) Vanillin (C) Phosphoric acid (D) Tartrazine
Ans: D
68. How much quantity ofCO2 reaches atmosphere, when 1 kg methane is burnt ?
(A) 3.03 kg (B) 3.50kg (C) 1.25 kg (D) 2.75 kg
Ans: D
69. Speed of sound is higher in which of the following mediums ?
(A) Liquids (B) Solids (C) Gases (D) All of these
Ans: B
70. Which type of light waves/rays used in remote control and night vision camera ?
(A) Ultraviolet (B) X-rays (C) Infrared (D) Microwaves
Ans: C
71. Reduction is addition of
(A) Hydrogen (B) Water (C) Oxygen (D) Benzene
Ans: A
72. Which of the following are the gases whose presence in high concentration in the lower strata of atmosphere, is chiefly responsible for causing the Greenhouse effect?
1. Sulphur dioxide 2. Carbon dioxide 3. Chlorofluorocarbons 4. Nitrogen
Select the correct answer using the code given below:
(a) 1 and 2 (b) 2 and 3 (c) 3 and 4 (d) 2 and 4
Ans: B
73. Consider the following electric lamps:
1. C F L 2. Incandescent bulb 3. L E D lamp
Indiscriminate or improper disposal of which of the above causes/ cause mercury pollution in the environment?
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3
Ans: A
74. Consider the following substances: 1. Acesulfame potassium 2. Polyethlene glycol 3. Saccharin 4. Sucralose
Which of the above are used as sugar substitutes in foods?
(a) 1 and 2 only (b) 2, 3 and 4 only (c) 1, 3 and 4 only (d) 1, 2, 3 and 4
Ans: C
75. Ozone is
(a) an isotope of Oxygen (b) an isomer of Oxygen
(c) an allotrope of Oxygen (d) a hydrate of Oxygen
Ans: C
76. Why are phosphates added to soft drinks?
(a) To give the drinks a tangy taste.
(b) To add sparkle to the drinks.
(c) To supplement the drinks with certain mineral nutrients.
(d) To give dark brown or chocolate colour to the drinks.
Ans: A
77.Which of the following is/are used as decoloring agent in the refinement of sugar?
1. Dimethylamine epichlorohydin copolymer 2. Sodium stearoyl lactylate
Select the correct answer using the code given below:
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
Ans: A
78. Which one of the following is not used as a food preservative?
(a) Benzoic acid (b) Citric acid (c) Ethylene dichloride (d) Sodium chloride
Ans: C
79. Use of calcium carbide for the artificial ripening of fruits is banned but it is often reported to be illegally used. What is/are the likely health hazards of exposure to this chemical?
1. Permanent damage to the eyes
2. Pulmonary edema
3. Irritation of mouth, throat and nose
Select the correct answer using the codes given below:
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3
Ans: D
80. Which of the following statements is correct regarding Malachite that is used as food adulterant?
(a) It is used for ripening of mangoes and custard apple. (b) It is used to make green vegetables shiny.
(c) It is added to sugar to increase its volume and weight. (d) It is added to tea dust to improve its flavour.
Ans: B
81. Calcium carbide is used
(a) as rodent killer (b) as insecticide (c) for fruit ripening (d) for lowering soil salinity
Ans: C
82. With reference to food additives, consider the following statements:
1. Benzoic acid and sorbic acid function as antimicrobial agents.
2. Citric acid is used to suppress browning of fruits and vegetables.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: C
83. With reference to the use of microorganisms in food processing, consider the following statements:
1. Lactic acid bacteria can ferment any monosaccharide or polysaccharide into lactic acid.
2. Baker’s yeast is manufactured from single cell isolates of Saccharomyces cerevisiae.
Which of the statements given above is/are correct?
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
Ans: B
84. Which of the following chemicals is/are used in food preservation?
1. Calcium propionate 2. Potassium metabisulphite 3. Lecithin
Select the correct answer using the code given below:
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None of them is used in food preservation
Ans: C
85:- The hydrocarbon present in LNG is
A:-Butane B:-Ethane C:- Methane D:-Propane
Ans: C
86- The most abundant element in the earth crust
A:- A|uminium B:-Hydrogen C:- Si|icon D:- Oxygen
Ans: D
87:- The type of waves used by artificial satellites for communication purpose
A:-Microwaves B:-AM Radio waves C:- F M Radio waves D:-X Rays
Ans: A
88:-Which of the following e waste component poses a health hazard?
A:-Lead B:-Mercury C:-Cadmium D:-All of the above
Ans: D
89. The Allotrope of carbon which is used as a moderator in nuclear reactors?
(A) Graphite (B) Fullerene (C) Graphene (D) Charcoal
Ans: A
90. Which is the major component of natural gas?
(A) Butane (B) Methane (C) Hydrogen (D) Carbon dioxide
Ans: B
91. Example of a semiconductor :
(A) Silicon (B) Copper (C) Iron (D) Aluminium
Ans: A
92. The catalyst used in the manufacture of Sulphuric Acid :
(A) Manganese Dioxide (B) Vanadium Pentoxide (C) Phosphoric Acid (D) Zinc Oxide
Ans: B
93. The compound used to regulate the setting time of cement :
(A) Limestone (B) Silicon dioxide (C) Gypsum (D) Calcium oxide
Ans: C
94. Sulphide ores of metals are usually concentrated by froth flotation process. Which one of the following sulphide ores offer an exception and its concentrated by chemical leaching?
(a) Galena (b) Copper pyrite (c) Sphalerite (d) Argentite
Ans: D
95. If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately
(a) 45 minutes (b) 60 minutes (c) 40 minutes (d) 50 minutes (log 4 = 0.60, log 5 = 0.69)
Ans: A
96. In which of the following the hydration energy is higher than the lattice energy?
(a) MgSO4 (b) RaSO4 (c) SrSO4 (d) BaSO4
Ans: A
97. Which of the compounds with molecular formula C5H10 yields acetone on ozonolysis?
(a) 3-methyl-1-butene (b) cyclopentane
(c) 2-methyl-1-butene (d) 2-methyl-2-butene.
Ans: D
98. Which one of the following orders correctly represents the increasing acid strengths of the given acids?
(a) HOClO < HOCl < HOClO3 < HOClO2
(b) HOClO2 < HOClO3 < HOClO < HOCl
(c) HOClO3 < HOClO2 < HOClO < HOCl
(d) HOCl < HOClO < HOClO2 < HOClO3
Ans: D
99. Consider the following sets of quantum numbers: n l m s
(i) 3 0 0 + 1/2
(ii) 2 2 1 + 1/2
(iii) 4 3 – 2 – 1/2
(iv) 1 0 – 1 – 1/2
(v) 3 2 3 + 1/2
Which of the following sets of quantum number is not possible?
(a) (i), (ii), (iii) and (iv)
(b) (ii), (iv) and (v)
(c) (i) and (iii)
(d) (ii), (iii) and (iv)
Ans: B
100. Which one of the following polymers is prepared by condensation polymerisation?
(a) Teflon (b) Natural rubber (c) Styrene (d) Nylon-66
Ans: D