CHEMISTRY MCQ
SSC CGL PREVIOUS YEAR'S SOLUTIONS
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| SSC CGL Year Solution Chemistry |
In this section, we have shared the previous year's solutions of SSC CGL exam. We have compiled Chemistry MCQ Questions and Answers. These objective questions of Chemistry are also important for all other competitive exams like SSC CHSL, Railways exams, State PSC Exams. UPSC Exams etc.
Go through all the MCQ questions and prepare well for your upcoming exams.
SSC CGL PREVIOUS YEARS SOLUTION | CHEMISTRY MCQ
1. What is the common name of Calcium
Sulphate Hemihydrate?
(a) Bleaching powder
(b) Slaked lime
(c) Plaster of Paris
(d) Detergent
2. Which of the following is the most
commonly used chemical for the ripening of
mangoes in India?
(a) Potassium Iodide
(b) Silver Iodide
(c) Ammonium Nitrate
(d) Calcium Carbide
3. Which of the following is also known as wood alcohol?
(a) Methanol
(b) Ethanol
(c) Propanol
(d) Butanol
4. Which of the following chemicals is called Philosopher’s Wool?
(a) Brimstone
(b) Zinc oxide
(c) Magnesium hydroxide
(d) Potassium nitrate
5. Which compound of Calcium and Magnesium makes the hardness of water
permanent?
(a) Chlorides
(b) Nitrates
(c) Carbonates
(d) All the above
6. Commercially, sodium bicarbonate is known as:
(a) Washing soda
(b) Baking soda
(c) Bleaching powder
(d) Indian saltpeter
7. Elements that show the properties of both
metals and non-metals are called:
(a) Allotropes
(b) Metalloids
(c) Alloys
(d) Metals
8. Which of the following can be used as
coolant in a nuclear reactor?
A. Carbon dioxide
B. Liquid sodium
C. Helium gas
(a) 1 & 2 only
(b) 2 & 3 only
(c) 1 & 3 only
(d) 1, 2 & 3
9. Which of the following is an ore of
Aluminium ?
(a) Galena
(b) Cryolite
(c) Epsom Salt
(d) Cinnabar
10. Liquified Petroleum Gas (LPG) is mostly a
mixture of which of the following two
carbon compounds?
(a) Methane and Ethane
(b) Ethane and Propane
(c) Propane and Butane
(d) Methane and Propane
11. Tritium is an isotope of__________.
(a) Oxygen
(b) Hydrogen
(c) Phosphorus
(d) Nitrogen
12. What amount of carbon dioxide is present in earth’s atmosphere?
(a) 12 %
(b) 1 %
(c) 0.04 %
(d) 3.8 %
13. Which of the following determined the absolute value of charge on an electron?
(a) JJ Thomson
(b) Rutherford
(c) RA Millikan
(d) James Chadwick
14. Which of the following discovered electron?
(a)JJ Thomson
(b) Rutherford
(c) RA Millikan
(d) James Chadwick
15. What is the name of the acid in grapes?
(a) Lactic acid
(b) Formic acid
(c) Acetic acid
(d) Tartaric acid
16. Which chemical is known as Roman Vitriol?
(a) Aluminium Sulphate
(b) Potassium Sulphate
(c) Copper Sulphate
(d) Iron Sulphate
17. Which of the following is used in beauty parlors for hair setting?
(a) Phosphorus
(b) Sulphur
(c) Chlorine
(d) Silicon
18. What is the main constituent of a pearl?
(a) Calcium carbonate and magnesium carbonate
(b) Calcium sulphate only
(c) Calcium oxide and calcium sulphate
(d) Calcium carbonate only
19. Which element is used for vulcanizing rubber?
(a) Silicon
(b) Bromine
(c) Sulphur
(d) Phosphorus
20. Which of the following gas can deplete the Ozone Layer?
(a) CHCl2F
(b) OF2
(c) Br2
(d) CO
21. Which noble gas is used for the treatment
of cancer?
(a) Radon
(b) Krypton
(c) Argon
(d) Helium
22. Which of the following can be beaten and converted into thin sheets?
(a) Sulphur
(b) Zinc
(c) Phosphorus
(d) Oxygen
23. Which metal oxide gives blue colour to the glass?
(a) Manganese Oxide
(b) Iron Oxide
(c) Cobalt Oxide
(d) Chromium Oxide
24. Uraninite is the ore of?
(a) Aluminium
(b) Zinc
(c) Tungsten
(d) Uranium
25. Which of the following base is used as anantacid?
(a) Barium Hydroxide
(b) Magnesium Hydroxide
(c) Silver Hydroxide
(d) Calcium hydroxide
26. Which of the following chemical is present in Nail polish remover?
(a) Benzene
(b) Citric Acid
(c) Acetone
(d) Ethylene
27. Which among the following is white phosphorus?
a) P1
b) P6
c) P4
d) P5
28. Which is known as carbolic acid?
(a) Phenol
(b) Ethanol
(c) Acetic acid
(d) Oxalic acid
29. Which of the following gases is used in cigarette lighters?
(a) Methane
(b) Butane
(c) Radon
(d) Propane
30. Which of the following gases is responsible for global warming?
(a) Methane
(b) Butane
(c) Radon
(d) Propane
31. Which of the following is NOT a chemical change?
(a) Curdling of milk
(b) Burning of coal
(c) Digestion of food
(d) Melting of ice
32. Which among the following is not a characteristic of transition metals?
(a) Low electronegativity
(b) Tendency to lose electrons
(c) Malleability
(d) Low ionization energy
33. Bauxite is an ore of which element?
(a) Beryllium
(b) Lead
(c) Aluminium
(d) Tin
34. Dynamite was invented by __________.
(a) Jean-Antoine Nollet
(b) Joseph Nicephore Niepce
(c) Alfred Nobel
(d) Ted Nelson
35. The brand name Teflon represents which polymer?
(a) Polyethylene terephthalate
(b) Polytetrafluoroethylene
(c) Polypropylene
(d) Polystyrene
36. Which chemical on exposure to sunlight gets converted to Phosgene?
(a) Benzene
(b) Propylene
(c) Acetone
(d) Chloroform
37. Who discovered Nitrogen?
(a) Heisenberg
(b) Faraday
(c) Rutherford
(d) Hooke
38. The common name of hydrogen peroxide is?
(a) Gypsum
(b) Borax
(c) Baking Soda
(d) Bleach (liquid)
39. In which of the following activities Silicon Carbide is used ?
(a) Making cement and glass
(b) Disinfecting water and ponds
(c) Making castes for statues
(d) Cutting very hard substances
40. Buckminsterfullerene is an allotrope of which of the following?
(a) Phosphorus
(b) Iron
(c) Carbon
(d) Boron
41. Which of the following is not correctly matched?
(a) Galena: Lead Sulphide
(b) Green vitriol: Copper sulphate
(c) Plaster of Paris Calcium sulphate
(d) Calomel: Mercurous Chloride
42. Which one among the following will you put into pure water in order to pass electric current through it?
(a) Kerosene
(b) Mustard oil
(c) Lemon juice
(d) Sugar
43. What is the purpose of adding baking soda to dough?
(a) To generate moisture
(b) To give a good flavour
(c) To give good colour
(d) To generate carbon dioxide
44. The process in which the ore is heated in the presence of air at a temperature below its melting point is called?
(a) Roasting
(b) Calcination
(c) Rusting
(d) Knocking
45. Which of the following metals forms an amalgam with other metals?
(a) Lead
(b) Tin
(c) Zinc
(d) Mercury
46. The charge on positron is equal to the charge on _______.
(a) proton
(b) electron electron
(c) α particle
(d) neutron
47. The ability of an atom to attract electrons in a chemical bond is called _________ of an atom ?
a) Electronegativity
b) Hardness
c) Radioactivity
d) Atomicity
48. What is the chemical formula of Naphthalene?
a) C 10 H 10
b) C 8 H 7
c) C 9 H 12
d) C 10 H 8
49. Which of the following shows the correct use of Sulphuric acid (H2SO4 )
a) In a lead storage battery
b) As an antiseptic
c) In bathroom cleaning
d) All of the above
50. Which among the following is an amphoteric oxide (which behaves acidic as well as basic)?
a) Aluminium oxide (Al2O3)
b) Dinitrogen pentoxide (N2O5)
c) Calcium oxide (CaO)
d) Sodium oxide (Na2O)
51. Which of the following gas is released from biogas plant?
a) Methane
b) Nitrogen
c) Freon
d) Propane
52. Reduction in chemical reactions is the ___________.
a) gain of nitrogen
b) gain of oxygen
c) loss of hydrogen
d) gain of hydrogen
53. The process of coating a layer of Zinc on Metal Iron to protect it from rusting is called?
a) Sublimation
b) Hydrogenation
c) Galvenisation
d) Vulcanisation
54. A chemical equation is balanced on both the Reactants and Products side so that the number of_______ on both sides
becomes equal.
a) Atoms
b) Electrons
c) Protons
d) Neutron
55. What is the name of slaked lime?
a) Calcium Nitrate
b) Sodium Chloride
c) Calcium Oxide
d) Calcium Hydroxide
56. The electronic configuration of an atom having atomic 'number 20 ' is ________.
a) 2, 8, 10
b) 2, 6, 8, 4
c) 2, 8, 8, 2
d) 2, 10, 8
57. Which of the inert gases can form compounds?
a) Helium
b) Xenon
c) Krypton
d) Argon
58. Burning pyrites ore gives out
a) Carbon dioxide gas
b) Sulfur dioxide gas
c) Nitrogen dioxide gas
d) Nitric oxide gas
59. Which one of the following elements is used in the manufacture of fertilizers?
a) Fluorine
b) Potassium
c) Lead
d) Aluminum
60. In addition to hydrogen, the other abundant element present on Sun's surface is ______.
a) Helium
b) Neon
c) Argon
d) Oxygen
61. A colloidal system in which a liquid is dispersed in a liquid is called ________
a) Gel
b) Emulsion
c) Sol
d) Precipitate
62. Which metal is the heaviest in periodic table among the following ?
a) Os
b) Pt
c) Pb
d) W
63. When Arsenic atoms are added to Germanium lattice, it becomes a/an
a) Insulator
b) Superconductor
c) Intrinsic semiconductor
d) Extrinsic semiconductor
64. Sulphuric acid is:
a) Monobasic
b) Dibasic
c) Tribasic
d) Tetrabasic
65. Which among the following is liquid nonmetal?
a) Mercury
b) Bromine
c) Water
d) Alcohol
66. Which of the following metals is used in Spacecrafts to withstand high temperatures?
(a) Fe
(b) Ti
(c) Ni
(d) Pb
67. The chemical formula of the laughing gas is:
a) NO
b)
N
2
O
c) NO
2
d)
N
2
O
3
68. An example of a heterocyclic compound is :
a) Naphthalene
b) Furan
c) Benzene
d) Anthracene
69. The antiseptic compound present in Dettol is
a) Iodine
b) Chloroxylenol
c) Bithionol
d) Cresol
70. The quality of petrol is expressed in terms of
a) Cetane number
b) Gold number
c) Octane number
d) Added unlead compounds
Answers of MCQ on Chemistry
1.c
2.d
3.a
4.b
5.d
6.b
7
–
b
8
–
d
9
-
b
10
–
c
11
–
b
12
–
d
13
–
c
14
–
a
15
–
d
16
–
c
17
–
b
18
–
a
19
–
c
20
–
a
21
–
a
22
–
b
23
–
c
24
–
d
25
–
b
26
–
c
27
–
c
28
–
a
29
–
b
30
–
a
31
–
d
32
–
b
33
–
c
34
–
c
35
–
b
36
–
d
37
–
c
38
–
d
39
–
d
40
–
c
41
–
b
42
–
c
43
–
d
44
–
a
45
–
d
46
–
a
47
–
a
48
–
d
49
–
a
50
–
a
51
–
a
52 – d
53 – c
54 – a
55 – d
56 - c
57 – b
58 – b
59 – b
60 – a
61 – b
62 – b
63 – d
64 – b
65 – b
66 – b
67 – b
68 – c
69 - b
70 – c
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