CHEMISTRY- PAGE 10
1. Chlorophyll contains which of the following metals :
1) Na
2) Mg
3) Ni
4) Cu
Ans: 2
2. Inert pair effect is maximum in :
1) N
2) P
3) As
4) Bi
Ans: 4
3. On the basis of Molecular Orbital Theory the bond order in CO is :
1) 0
2) 1
3) 2
4) 3
Ans: 4
4. In which of the following compounds K-band appears
1) Benzene
2) Butadiene
3) Mesityl oxide
4) All of these
Ans: 4
5. The emission of a beta particle from the nucleus of a radioactive element raises the positive charge by :
1) 1
2) 2
3) 3
4) 4
Ans: 1
6. Rutile is an ore of :
1) Ti
2) Pt
3) Ni
4) Cr
Ans: 1
7. Vitamin B12 contains :
1) Fe
2) Co
3) Ni
4) Mg
Ans: 2
8. The ratio of the number of moles consumed in the process and number of photons absorbed by it is called :
1) Photon Energy
2) Photon Density
3) Quantum Yield
4) Einsteins
Ans: 3
9. The gas which is filled in electric bulb is :
1) He
2) Ne
3) Ar
4) Rn
Ans: 3
10. The Valence bond theory is proposed by whom of the following :
1) L. Pauling and J.L. Slater
2) Werner
3) Hans Brethe and J. Van Vleck
4) L. Orgel
Ans: 1
11. In nature Mg, Ca and Al exist as carbonate metal ores and not as metal sulphide ores due to one of the following acid base priciples :
1) BroSnsted Laury Concept
2) Arrhenius Theory
3) Pearson Principle of SHAB
4) Usanovic Principle
Ans: 3
12. The exact molecular weight can be determined by :
1) IR Spectroscopy
2) UV-VIS Spectroscopy
3) Mass Spectroscopy
4) NMR Spectroscopy
Ans: 3
13. The highest oxidation state shown by rhenium is :
1) +5
2) +6
3) +7
4) +8
Ans: 3
14. Bhopal Gas Tragedy is a case of :
1) Thermal Pollution
2) Air Pollution
3) Nuclear Pollution
4) Soil Pollution
Ans: 2
15. BOD of river is high, it means river is :
1) Very much polluted with inorganic chemicals.
2) Very much polluted with organic chemical which are decomposed by micro organisms
3) Polluted with Pesticides
4) Not Polluted
Ans: 2
16. The metal extracted from sea water is :
1) Mg
2) Al
3) Ba
4) Ca
Ans: 1
17. Fertilizer having the highest nitrogen percentage is :
1) Calcium Cyanide
2) Urea
3) Ammonium Nitrate
4) Ammonium Sulphate
Ans: 2
18. The decrease in the value of molar extinction coefficient of an absorption band due to substitution in a molecule is called :
1) Bathochromic Shift
2) Hypochromic Shift
3) Hypsochromic Shift
4) Hyperchromic Shift
Ans: 2
19. Which of the following vibrations is of the highest energy requirement ?
1) Symmetric Stretching
2) Asymmetric Stretching
3) Twisting
4) Wagging
Ans: 2
20. What is the pH of normal rain water ?
1) 4.3
2) 5.6
3) 7.0
4) 7.5
Ans: 2
21. Which property of a substance is measured in thermogravimetric analysis (TGA) ?
1) Change in temperature
2) Change in weight
3) Heat evolved or absorved
4) Heating Rate
Ans: 2
22. The common temperature detection devices used in DTA are :
1) Thermocouples
2) Thermopiles
3) Thermistors
4) All of these
Ans: 4
23. Which radiations of electromagnetic spectrum is used in Mossbauer spectroscopy ?
1) Radiowaves
2) Microwaves
3) XRays
4) Gamma Rays
Ans: 4
24. Forensic scientists use the reaction of luminol to detect blood at crime scenes. It is an example of :
1) Phosphorescence
2) Fluorescence
3) Chemiluminescence
4) Intersystem Crossing
Ans: 3
25. The term ' analyte' is used in TLC for the :
1) compound to be purified
2) solvent run in column
3) Adsorbent filled in column
4) Retention factor
Ans: 1
26. Who got Nobel Prize for inventing partition and thin layer Chromatography ?
1) Paul J. Flory
2) D.H.R. Barton and O. Hassel
3) Arthur Harden and H. Von Euler Chelpin
4) A.J.P. Martin and R.L.M. Synge
Ans: 4
27. On photolysis hexan-2-one gives propene and acetone. The process is known as :
1) Norrish type I process
2) Norrish type II process
3) Mc Lafferty rearrangement
4) Photochemical isomerizations
Ans: 2
28. In nature the principal decomposition product of DDT is :
1) Aldrin
2) Dieldrin
3) Chlordan
4) DDE
Ans: 4
29. The energy produced in the Sun and stars is due to :
1) Nuclear Fusion
2) Nuclear Fission
3) Photochemical Reaction
4) Thermal Chemical Reaction
Ans: 1
30. 'Fat man' relates to :
1) PuBomb
2) UBomb
3) HBomb
4) ThBomb
Ans: 1
31. The electrons which contribute to isomer shift in Mossbauer spectroscopy are :
1) selectrons
2) pelectrons
3) delectrons
4) felectrons
Ans: 1
32. Movement of nuclei is negligible during the time taken by the electronic transition, it is called :
1) Franck Condon Principle
2) Born Oppenheimer approximation
3) Lamberts Beers Law
4) Huckel Approximation
Ans: 1
33. The region extending from 380nm to 750nm is called :
1) Near U.V.
2) Quartz U.V.
3) I.R.
4) Visible Region
Ans: 4
34. The most widely used flame in atomic absorption is :
1) Air-acetylene
2) Air Propane
3) Air coal gas
4) Oxyacetylene
Ans: 1
35. Which of the following statement is incorrect :
1) DTA curves are influenced by heating rate
2) Peak area decreases with increasing particle size
3) DTA curves are influenced by chart speed
4) Peak area does not depend on quantity of sample
Ans: 4
36. The full form of RIA is :
1) Radio Immuno Assay
2) Radio Immuno Analysis
3) Radio Isotope Analysis
4) None of these
Ans: 1
37. The ability of water to absorb hydrogen ions without significant pH change is called :
1) Acidity
2) Alkalinity
3) Neutrality
4) None of these
Ans: 2
38. If a photochemical reaction has higher quantum yield than unity, it indicates
1) A reversible reaction
2) An elementary reaction
3) A chain reaction
4) None of these
Ans: 3
39. Radio carbon dating was developed by ?
1) M. Curie
2) M. Calvin
3) H. Becquereel
4) W. F. Libby
Ans: 4
1) Na
2) Mg
3) Ni
4) Cu
Ans: 2
2. Inert pair effect is maximum in :
1) N
2) P
3) As
4) Bi
Ans: 4
3. On the basis of Molecular Orbital Theory the bond order in CO is :
1) 0
2) 1
3) 2
4) 3
Ans: 4
4. In which of the following compounds K-band appears
1) Benzene
2) Butadiene
3) Mesityl oxide
4) All of these
Ans: 4
5. The emission of a beta particle from the nucleus of a radioactive element raises the positive charge by :
1) 1
2) 2
3) 3
4) 4
Ans: 1
6. Rutile is an ore of :
1) Ti
2) Pt
3) Ni
4) Cr
Ans: 1
7. Vitamin B12 contains :
1) Fe
2) Co
3) Ni
4) Mg
Ans: 2
8. The ratio of the number of moles consumed in the process and number of photons absorbed by it is called :
1) Photon Energy
2) Photon Density
3) Quantum Yield
4) Einsteins
Ans: 3
9. The gas which is filled in electric bulb is :
1) He
2) Ne
3) Ar
4) Rn
Ans: 3
10. The Valence bond theory is proposed by whom of the following :
1) L. Pauling and J.L. Slater
2) Werner
3) Hans Brethe and J. Van Vleck
4) L. Orgel
Ans: 1
11. In nature Mg, Ca and Al exist as carbonate metal ores and not as metal sulphide ores due to one of the following acid base priciples :
1) BroSnsted Laury Concept
2) Arrhenius Theory
3) Pearson Principle of SHAB
4) Usanovic Principle
Ans: 3
12. The exact molecular weight can be determined by :
1) IR Spectroscopy
2) UV-VIS Spectroscopy
3) Mass Spectroscopy
4) NMR Spectroscopy
Ans: 3
13. The highest oxidation state shown by rhenium is :
1) +5
2) +6
3) +7
4) +8
Ans: 3
14. Bhopal Gas Tragedy is a case of :
1) Thermal Pollution
2) Air Pollution
3) Nuclear Pollution
4) Soil Pollution
Ans: 2
15. BOD of river is high, it means river is :
1) Very much polluted with inorganic chemicals.
2) Very much polluted with organic chemical which are decomposed by micro organisms
3) Polluted with Pesticides
4) Not Polluted
Ans: 2
16. The metal extracted from sea water is :
1) Mg
2) Al
3) Ba
4) Ca
Ans: 1
17. Fertilizer having the highest nitrogen percentage is :
1) Calcium Cyanide
2) Urea
3) Ammonium Nitrate
4) Ammonium Sulphate
Ans: 2
18. The decrease in the value of molar extinction coefficient of an absorption band due to substitution in a molecule is called :
1) Bathochromic Shift
2) Hypochromic Shift
3) Hypsochromic Shift
4) Hyperchromic Shift
Ans: 2
19. Which of the following vibrations is of the highest energy requirement ?
1) Symmetric Stretching
2) Asymmetric Stretching
3) Twisting
4) Wagging
Ans: 2
20. What is the pH of normal rain water ?
1) 4.3
2) 5.6
3) 7.0
4) 7.5
Ans: 2
21. Which property of a substance is measured in thermogravimetric analysis (TGA) ?
1) Change in temperature
2) Change in weight
3) Heat evolved or absorved
4) Heating Rate
Ans: 2
22. The common temperature detection devices used in DTA are :
1) Thermocouples
2) Thermopiles
3) Thermistors
4) All of these
Ans: 4
23. Which radiations of electromagnetic spectrum is used in Mossbauer spectroscopy ?
1) Radiowaves
2) Microwaves
3) XRays
4) Gamma Rays
Ans: 4
24. Forensic scientists use the reaction of luminol to detect blood at crime scenes. It is an example of :
1) Phosphorescence
2) Fluorescence
3) Chemiluminescence
4) Intersystem Crossing
Ans: 3
25. The term ' analyte' is used in TLC for the :
1) compound to be purified
2) solvent run in column
3) Adsorbent filled in column
4) Retention factor
Ans: 1
26. Who got Nobel Prize for inventing partition and thin layer Chromatography ?
1) Paul J. Flory
2) D.H.R. Barton and O. Hassel
3) Arthur Harden and H. Von Euler Chelpin
4) A.J.P. Martin and R.L.M. Synge
Ans: 4
27. On photolysis hexan-2-one gives propene and acetone. The process is known as :
1) Norrish type I process
2) Norrish type II process
3) Mc Lafferty rearrangement
4) Photochemical isomerizations
Ans: 2
28. In nature the principal decomposition product of DDT is :
1) Aldrin
2) Dieldrin
3) Chlordan
4) DDE
Ans: 4
29. The energy produced in the Sun and stars is due to :
1) Nuclear Fusion
2) Nuclear Fission
3) Photochemical Reaction
4) Thermal Chemical Reaction
Ans: 1
30. 'Fat man' relates to :
1) PuBomb
2) UBomb
3) HBomb
4) ThBomb
Ans: 1
31. The electrons which contribute to isomer shift in Mossbauer spectroscopy are :
1) selectrons
2) pelectrons
3) delectrons
4) felectrons
Ans: 1
32. Movement of nuclei is negligible during the time taken by the electronic transition, it is called :
1) Franck Condon Principle
2) Born Oppenheimer approximation
3) Lamberts Beers Law
4) Huckel Approximation
Ans: 1
33. The region extending from 380nm to 750nm is called :
1) Near U.V.
2) Quartz U.V.
3) I.R.
4) Visible Region
Ans: 4
34. The most widely used flame in atomic absorption is :
1) Air-acetylene
2) Air Propane
3) Air coal gas
4) Oxyacetylene
Ans: 1
35. Which of the following statement is incorrect :
1) DTA curves are influenced by heating rate
2) Peak area decreases with increasing particle size
3) DTA curves are influenced by chart speed
4) Peak area does not depend on quantity of sample
Ans: 4
36. The full form of RIA is :
1) Radio Immuno Assay
2) Radio Immuno Analysis
3) Radio Isotope Analysis
4) None of these
Ans: 1
37. The ability of water to absorb hydrogen ions without significant pH change is called :
1) Acidity
2) Alkalinity
3) Neutrality
4) None of these
Ans: 2
38. If a photochemical reaction has higher quantum yield than unity, it indicates
1) A reversible reaction
2) An elementary reaction
3) A chain reaction
4) None of these
Ans: 3
39. Radio carbon dating was developed by ?
1) M. Curie
2) M. Calvin
3) H. Becquereel
4) W. F. Libby
Ans: 4
40:-Equimolar solution in the same solvent have
A:-same boiling point but different freezing point
B:-same freezing point but different boiling point
C:-same boiling point and same freezing point
D:-different boiling point and different freezing point
Ans: C
41:-Which one of the following is not a condensation polymer?
A:-Terylene
B:-Neoprene
C:-Melamine
D:-Bakelite
Ans: B
42:-The number of octahedral void(s) per atom present in a cubic close packed structure is
A:-3
B:-4
C:-1
D:-2
Ans: C
43:-Tincture of iodine is
A:-alcoholic solution of `"I_2"`
B:-solution of `"I_2"` in aqueous KI
C:-aqueous solution of `"I_2"`
D:-aqueous solution of KI
Ans: A
44:-Which of the following reaction will not result in the formation of C-C bond?
A:-Reimer-Tiemann reaction
B:-Friedel-Craft's reaction
C:-Wurtz reaction
D:-Cannizaro reaction
Ans: D
45. Teflon is a polymer of which of the following monomers?
A:- Tetrafluoroethylene
B:- Vinyl chloride
C:- Chloroprene
D:- Acetylene dichloride
Ans: A
A:-same boiling point but different freezing point
B:-same freezing point but different boiling point
C:-same boiling point and same freezing point
D:-different boiling point and different freezing point
Ans: C
41:-Which one of the following is not a condensation polymer?
A:-Terylene
B:-Neoprene
C:-Melamine
D:-Bakelite
Ans: B
42:-The number of octahedral void(s) per atom present in a cubic close packed structure is
A:-3
B:-4
C:-1
D:-2
Ans: C
43:-Tincture of iodine is
A:-alcoholic solution of `"I_2"`
B:-solution of `"I_2"` in aqueous KI
C:-aqueous solution of `"I_2"`
D:-aqueous solution of KI
Ans: A
44:-Which of the following reaction will not result in the formation of C-C bond?
A:-Reimer-Tiemann reaction
B:-Friedel-Craft's reaction
C:-Wurtz reaction
D:-Cannizaro reaction
Ans: D
45. Teflon is a polymer of which of the following monomers?
A:- Tetrafluoroethylene
B:- Vinyl chloride
C:- Chloroprene
D:- Acetylene dichloride
Ans: A
46. What is the chemical name of DDT?
(A) Dichloro diphenyl trichloro ethane
(B) Dichloro diphenyl tribromo ethane
(C) Diphenyl dichloro trichloro ethane
(D) Diphenyl dibromo trichloro ethane
Answer: A
47. 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
48. 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
49. 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
50. Ozone is
(a) an isotope of Oxygen
(b) an isomer of Oxygen
(c) an allotrope of Oxygen
(d) a hydrate of Oxygen
Ans: C
51. 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
52. 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
53. 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
54. 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
55.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
(A) Dichloro diphenyl trichloro ethane
(B) Dichloro diphenyl tribromo ethane
(C) Diphenyl dichloro trichloro ethane
(D) Diphenyl dibromo trichloro ethane
Answer: A
47. 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
48. 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
49. 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
50. Ozone is
(a) an isotope of Oxygen
(b) an isomer of Oxygen
(c) an allotrope of Oxygen
(d) a hydrate of Oxygen
Ans: C
51. 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
52. 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
53. 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
54. 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
55.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
56. If all the plants and trees vanish from the earth, the gases which will decreases is:
1) Caron dioxide
2) Nitrogen
3) Water vapour
4) Oxygen
Ans: 4
57. Dynamo is a Machine which is used for:
1) Conversion of High Voltage to low voltage
2) Conversion of Low Voltage to high voltage
3) Conversion of Electrical energy to Mechanical energy
4) Conversion of Mechanical Energy to Electrical energy
Ans: 4
58. DRY ICE is:
1) Frozen Ice
2) Frozen Carbon dioxide
3) Frozen water
4) Frozen oxygen
Ans:2
59. The Halogen being used as Analgesic is:
1) Chlorine
2) Bromine
3) Iodine
4) Fluorine
Ans: 2
60. The IC Chip used in computer is made of:
1) Copper
2) Silicon
3) Steel
4) Plastic
Ans: 2
61. The first metal used by Man was:
1) Gold
2) Silver
3) Copper
4) Iron
Ans: 3
62. Which of the following is the best conductor of Electricity ?
1) Aluminium
2) Copper
3) Silver
4) Gold
Ans: 3
63. Ozone layer is above the earth crust around ?
1) 50 KM
2) 300 KM
3) 2000 KM
4) 20 KM
Ans: D
1) Caron dioxide
2) Nitrogen
3) Water vapour
4) Oxygen
Ans: 4
57. Dynamo is a Machine which is used for:
1) Conversion of High Voltage to low voltage
2) Conversion of Low Voltage to high voltage
3) Conversion of Electrical energy to Mechanical energy
4) Conversion of Mechanical Energy to Electrical energy
Ans: 4
58. DRY ICE is:
1) Frozen Ice
2) Frozen Carbon dioxide
3) Frozen water
4) Frozen oxygen
Ans:2
59. The Halogen being used as Analgesic is:
1) Chlorine
2) Bromine
3) Iodine
4) Fluorine
Ans: 2
60. The IC Chip used in computer is made of:
1) Copper
2) Silicon
3) Steel
4) Plastic
Ans: 2
61. The first metal used by Man was:
1) Gold
2) Silver
3) Copper
4) Iron
Ans: 3
62. Which of the following is the best conductor of Electricity ?
1) Aluminium
2) Copper
3) Silver
4) Gold
Ans: 3
63. Ozone layer is above the earth crust around ?
1) 50 KM
2) 300 KM
3) 2000 KM
4) 20 KM
Ans: D
64. Which set of the following gases is most important for greenhouse effect ?
(a) Carbon dioxide, Methane, Chlorine, Nitric oxide.
(b) Nitric oxide, Methane, Ethane, Chlorfluoro carbons.
(c) Carbon dioxide, Methane, Nitrous oxide, Water vapour.
(d) Carbon Monoxide, Sulphur dioxide, Methane, Water vapour
Ans: C
65. Nickel-Cadmium (Ni-Cd) battery is used in
(a) Calculator (b) Cordless electronic appliances
(c) Transistors (d) All of the above
Ans: D
66. Which statement is not associated with nuclear fission ?
(a) Neutron-induced nuclear reaction.
(b) Energy generation in stars.
(c) Source of energy in nuclear reactor that produces electricity.
(d) Enormous energy is released in an atom bomb.
Ans: B
67. Cellulose and starch both are made up of
(a) (+) – glucose (b) (–) – fructose
(c) Both (a) and (b) given above (d) (+) – galactose
Ans: A
68. Which of the following is a mechanical wave ?
(a) Radio-waves (b) X-rays
(c) Light waves (d) Sound waves
Ans: D
(a) Carbon dioxide, Methane, Chlorine, Nitric oxide.
(b) Nitric oxide, Methane, Ethane, Chlorfluoro carbons.
(c) Carbon dioxide, Methane, Nitrous oxide, Water vapour.
(d) Carbon Monoxide, Sulphur dioxide, Methane, Water vapour
Ans: C
65. Nickel-Cadmium (Ni-Cd) battery is used in
(a) Calculator (b) Cordless electronic appliances
(c) Transistors (d) All of the above
Ans: D
66. Which statement is not associated with nuclear fission ?
(a) Neutron-induced nuclear reaction.
(b) Energy generation in stars.
(c) Source of energy in nuclear reactor that produces electricity.
(d) Enormous energy is released in an atom bomb.
Ans: B
67. Cellulose and starch both are made up of
(a) (+) – glucose (b) (–) – fructose
(c) Both (a) and (b) given above (d) (+) – galactose
Ans: A
68. Which of the following is a mechanical wave ?
(a) Radio-waves (b) X-rays
(c) Light waves (d) Sound waves
Ans: D
69. Teflon is the common name of
(a) Polytetrafluoro ethylene (b) Polyvinyl chloride
(c) Polyvinyl fluoride (d) Dichlorodifluoro methane
Ans: A
70. Which pair of following is of Copper alloys ?
(a) Brass and invar (b) Bronze and Nichrome
(c) Brass and Bronze (d) None of the above
Ans: C
71. Electric conduction in a semiconductor takes place due to
(a) Electrons only (b) Holes only
(c) Both electrons and holes (d) Neither electrons nor holes
Ans: C
72. Which is the lightest metal ?
(A) Calcium (B) Barium (C) Lithium (D) Sodium
Ans: C
73. The non-metal which is in liquid state at atmospheric temperature.
(A) Bromine (B) Mercury (C) Galium (D) Cesium
Ans: A
74. “Calcium hydroxide” is the chemical name of ______ .
(A) Caustic soda (B) Caustic potash (C) Milk of lime (D) Milk of Magnesia
Ans: C
75:-Which one of the following is not ferromagnetic ?
A:-Cobalt B:-Nickel C:-Iron D:-Bismuth
Ans: D
76:-Which of the following radiation is used to take photographs of distant objects ?
A:-Microwaves B:-X-rays C:-UV-rays D:-IR-radiations
Ans: D
77:-Rutherford conducted the scattering experiment using
A:-`beta` -particles B:-`alpha` -particles C:-`gamma` -particles D:-photons
Ans: B
78:-The hybridisation of carbon in diamond is
A:-`sp^2` B:-sp C:-`sp^3` D:-`sp^3` d
Ans: C
79:-Permanent hardness cannot be removed by
A:-Adding washing soda to water B:-Boiling water C:-Adding calgon D:-Passing through resin
Ans: B
80:-The shape of methane molecule is
A:-tetrahedral B:-linear C:-pyramidal D:-planar
Ans: A
81:-Milk is an example of
A:-foam B:-gel C:-emulsion D:-sol
Ans: C
82:-Graphite belongs to which type of crystalline structure ?
A:-Hexagonal B:-Monoclinic C:-Triclinic D:-Cubic
Ans: A
83:-Germanium is refined by
A:-distillation B:-liquation C:-electrolysis D:-zone refining
Ans: D
84:-Non-sticky coating of frying pans is made by a polymer
A:-PAN B:-HDP C:-TEFLON D:-Buna-N
Ans: C
85:-Which test is used for identifying phenol ?
A:-Schiff's test B:-Tollen's test C:-Lucas test D:-Neutral ferric chloride
Ans: D
86:-The anode of Laclanche cell is made up of
A:-Zinc B:-Copper C:-Aluminium D:-Magnesium
Ans: A
(a) Polytetrafluoro ethylene (b) Polyvinyl chloride
(c) Polyvinyl fluoride (d) Dichlorodifluoro methane
Ans: A
70. Which pair of following is of Copper alloys ?
(a) Brass and invar (b) Bronze and Nichrome
(c) Brass and Bronze (d) None of the above
Ans: C
71. Electric conduction in a semiconductor takes place due to
(a) Electrons only (b) Holes only
(c) Both electrons and holes (d) Neither electrons nor holes
Ans: C
72. Which is the lightest metal ?
(A) Calcium (B) Barium (C) Lithium (D) Sodium
Ans: C
73. The non-metal which is in liquid state at atmospheric temperature.
(A) Bromine (B) Mercury (C) Galium (D) Cesium
Ans: A
74. “Calcium hydroxide” is the chemical name of ______ .
(A) Caustic soda (B) Caustic potash (C) Milk of lime (D) Milk of Magnesia
Ans: C
75:-Which one of the following is not ferromagnetic ?
A:-Cobalt B:-Nickel C:-Iron D:-Bismuth
Ans: D
76:-Which of the following radiation is used to take photographs of distant objects ?
A:-Microwaves B:-X-rays C:-UV-rays D:-IR-radiations
Ans: D
77:-Rutherford conducted the scattering experiment using
A:-`beta` -particles B:-`alpha` -particles C:-`gamma` -particles D:-photons
Ans: B
78:-The hybridisation of carbon in diamond is
A:-`sp^2` B:-sp C:-`sp^3` D:-`sp^3` d
Ans: C
79:-Permanent hardness cannot be removed by
A:-Adding washing soda to water B:-Boiling water C:-Adding calgon D:-Passing through resin
Ans: B
80:-The shape of methane molecule is
A:-tetrahedral B:-linear C:-pyramidal D:-planar
Ans: A
81:-Milk is an example of
A:-foam B:-gel C:-emulsion D:-sol
Ans: C
82:-Graphite belongs to which type of crystalline structure ?
A:-Hexagonal B:-Monoclinic C:-Triclinic D:-Cubic
Ans: A
83:-Germanium is refined by
A:-distillation B:-liquation C:-electrolysis D:-zone refining
Ans: D
84:-Non-sticky coating of frying pans is made by a polymer
A:-PAN B:-HDP C:-TEFLON D:-Buna-N
Ans: C
85:-Which test is used for identifying phenol ?
A:-Schiff's test B:-Tollen's test C:-Lucas test D:-Neutral ferric chloride
Ans: D
86:-The anode of Laclanche cell is made up of
A:-Zinc B:-Copper C:-Aluminium D:-Magnesium
Ans: A
87. If ‘n’ represents total number of asymmetric carbon atoms in a compound, the possible number of optical isomers of the compound is (A) 2n (B) 2 n (C) n 2 (D) 2n 2
Ans: C
88. Which is the most stable allotrope of sulphur ?
(A) Octahedral sulphur (B) Monoclinic sulphur (C) Plastic sulphur (D) Colloidal sulphur
Ans: A
89. Correct statement for thermoplastic polymer is
(A) It does not become soft on heating under pressure
(B) It can not be remoulded
(C) It is either linear or branched chain polymer
(D) It is cross-linked polymer Q.
Ans: C
90. How many Faradays of electricity are required to deposit 10 g of calcium from molten calcium chloride using inert electrodes ? (molar mass of calcium = 40 g mol–1)
(A) 0.5 F (B) 1 F (C) 0.25 F (D) 2 F
Ans: A
91. Name the reagent that is used in leaching of gold
(A) Carbon (B) Sodium cyanide (C) Carbon monoxide (D) Iodine
Ans: B
92. Which of the following is an analgesic ?
(A) Ofloxacin (B) Penicillin (C) Aminoglycosides (D) Paracetamol
Ans: D
93. The compound which is NOT formed when a mixture of n-butyl bromide and ethyl bromide treated with sodium metal in presence of dry ether is
(A) Butane (B) Octane (C) Hexane (D) Ethane
Ans: D
94. Butylated hydroxy anisole is
(A) an anti oxidant (B) cleansing agent (C) disinfectant (D) an antihistamine
Ans: A
95. Which metal crystallises in a simple cubic structure ?
(A) Polonium (B) Copper (C) Nickel (D) Iron
Ans: A
96. The amine ‘A’ when treated with nitrous acid gives yellow oily substance. The amine A is
(A) triethylamine (B) trimethylamine (C) aniline (D) methylphenylamine
Ans: D
97. The element that does NOT form acidic oxide is
(A) Carbon (B) Phosphorus (C) Chlorine (D) Barium
Ans: D
98. Bulletproof helmets are made from
(A) Lexan (B) Saran (C) Glyptal (D) Thiokol
Ans: A
99. Which metal is refined by Mond Process ?
(A) Titanium (B) Copper (C) Nickel (D) Zinc
Ans: C
100. Isopropyl methyl ether when treated with cold hydrogen iodide gives
(A) isopropyl iodide and methyl iodide (B) isopropyl alcohol and methyl iodide
(C) isopropyl alcohol and methyl alcohol (D) isopropyl iodide and methyl alcohol
Ans: B
Ans: C
88. Which is the most stable allotrope of sulphur ?
(A) Octahedral sulphur (B) Monoclinic sulphur (C) Plastic sulphur (D) Colloidal sulphur
Ans: A
89. Correct statement for thermoplastic polymer is
(A) It does not become soft on heating under pressure
(B) It can not be remoulded
(C) It is either linear or branched chain polymer
(D) It is cross-linked polymer Q.
Ans: C
90. How many Faradays of electricity are required to deposit 10 g of calcium from molten calcium chloride using inert electrodes ? (molar mass of calcium = 40 g mol–1)
(A) 0.5 F (B) 1 F (C) 0.25 F (D) 2 F
Ans: A
91. Name the reagent that is used in leaching of gold
(A) Carbon (B) Sodium cyanide (C) Carbon monoxide (D) Iodine
Ans: B
92. Which of the following is an analgesic ?
(A) Ofloxacin (B) Penicillin (C) Aminoglycosides (D) Paracetamol
Ans: D
93. The compound which is NOT formed when a mixture of n-butyl bromide and ethyl bromide treated with sodium metal in presence of dry ether is
(A) Butane (B) Octane (C) Hexane (D) Ethane
Ans: D
94. Butylated hydroxy anisole is
(A) an anti oxidant (B) cleansing agent (C) disinfectant (D) an antihistamine
Ans: A
95. Which metal crystallises in a simple cubic structure ?
(A) Polonium (B) Copper (C) Nickel (D) Iron
Ans: A
96. The amine ‘A’ when treated with nitrous acid gives yellow oily substance. The amine A is
(A) triethylamine (B) trimethylamine (C) aniline (D) methylphenylamine
Ans: D
97. The element that does NOT form acidic oxide is
(A) Carbon (B) Phosphorus (C) Chlorine (D) Barium
Ans: D
98. Bulletproof helmets are made from
(A) Lexan (B) Saran (C) Glyptal (D) Thiokol
Ans: A
99. Which metal is refined by Mond Process ?
(A) Titanium (B) Copper (C) Nickel (D) Zinc
Ans: C
100. Isopropyl methyl ether when treated with cold hydrogen iodide gives
(A) isopropyl iodide and methyl iodide (B) isopropyl alcohol and methyl iodide
(C) isopropyl alcohol and methyl alcohol (D) isopropyl iodide and methyl alcohol
Ans: B