PSC General Knowledge questions and answer - Chemistry

PSC General Knowledge questions and answer

 CHEMISTRY :

Dear friends,
                      First of all thank you for visiting this blog.Here i'm note down several questions and answers in the chemistry related G.K ,these are frequently asked in psc and other competitive exams. the questions here are selected with an aim to help the viewers learn more.These questions and answers will help the students to prepare for various competitions.

1. Which polymer is used for making bulletproof material?
Answer – Polyethylene

2. Which major component is used in preparation of different types of glasses?
Answer – Silica

3. Which will you put into pure water in order to pass electric current through it?
Answer – Lemon Juice

4. With which name of the particle ‘Boson’ is associated?
Answer –  S. N. Bose

5. Cooking gas is a mixture of which gases?
Answer –  Butane and propane

6. What is the most abundant metal in the earth’s crust?
Answer –  Aluminium

7. Which are the metal that is present in photo films?
Answer –  Silver

8. Which element that does not occur in nature but can be produced artificially?
Answer –  Plutonium

9. In vulcanisation, with which the natural rubber is heated?
Answer – Sulphur

10. Which chemical used as a ‘fixer’ in photography?
 Answer – Sodium thiosulphate

11. Which does not wet the walls of the glass vessel in which it is kept?
Answer – Mercury

12. Acetyl salicylic acid is commonly used as which medicine?
Answer – A pain killer

13. Which acid used to remove ink spots?
Answer –  Oxalic acid

14. All acids contain which element?
Answer – Hydrogen

15. In which processes light energy is converted into chemical energy?
 Answer – Photosynthesis

16. Which metal used to pollute the air of a big city?
Answer – Lead

17. Which is a non-metal that remains liquid at room- temperature?
Answer – Bromine

18. Which pair does not contain a coinage metal?
Answer –  Zinc and Gold

19. By which method is the age of most ancient geological formations estimated?
Answer – C4 method

20. What is the main constituent of natural gas?
Answer – Methane

21. For which thing is Washing soda the common name?
Answer – Sodium carbonate

22. By which permeabilty is a super conductor characterised?
Answer – Zero permeability

23. In colourful diamond, Why are different colours present?
 Answer – Due to impurities

24. Which is an element which never exhibits positive oxidation state in any of its compounds?
 Answer – Fluorine

25. Which is a major constituent of Biogas?
Answer – Methane

26. Which is the second most abundant metal in the earth’s crust?
Answer – Iron

27. Which alloy used in making heating elements for electric heating devices?
Answer – Nichrome

28. Which is the element found on the surface of the moon?
Answer – Titanium

29. Radioactive distintegration of uranium ultimately results in which formation?
Answer – Lead

30. Which variety of glass is heat resistant?
Answer – Pyrex glass

31. Which synthetic fibre is known as artificial silk?
Answer – Rayon

32. Which fertilizer has more nitrogen content?
Answer – Urea

33. Which is the essential element in all organic compounds?
Answer – Carbon

34. Which substance coated on plastic tape?
Answer – Iron oxide

35. Which is used in welding industry?
Answer – Acetylene

36. Which element present in the largest amount in rocks and minerals?
Answer – Silicon

37. Which is used as a material for making protective windows in space probes?
Answer – Diamond

38. Non-stick cooking utensils are coated with which metal?
 Answer – Teflon

39. Which substance is a bad conductor of electricity but a good conductor of heat?
Answer – Mica

40. Which is the most nonreactive gas?
Answer – Hydrogen

41. ‘IC chips’ for computers are usually made of which metal?
Answer – Silicon

42. In fireworks, how is the green flame produced?
Answer – Because of barium

43. By which an element is best characterized?
Answer – By its atomic number

44. Which when dissolved in HO gives hissing sound?
Answer – Limestone

45. What are Rubies and Sapphires chemically known as?
Answer – Aluminium oxide

46. Which material is suitable for water purification?
Answer – Zeolites

47. Which glass is used in bullet proof screens?
Answer – Reinforced glass

48. What is used in preparing match sticks?
Answer – Red phosphorus

49. Which type of glass can cut off ultraviolet rays?
Answer – Crookes glass

50. From which are Contact lenses made?
Answer – Lucite

51. Which non-metals is not a poor conductor of electricity?
 Answer – Selenium

52. Which polymeric material is used for making bullet proof jacket?
Answer – KEVLAR

53. Which type of glass is used for making glass reinforced plastic?
Answer – Quartz glass

54. Which is called philosopher’s wool?
 Answer – Zinc oxide

55. Which metal is non toxic in nature?
Answer – Gold

56. What is a powerful eye irritant present in smog?
 Answer – Sulphur dioxide

57. What is the main constituent of vinegar?
Answer – Acetic acid

58. Which of the toxic heavy metals is found in modern tannery industries?
Answer – Chromium

59. What are Carbon, diamond and graphite together called?
 Answer – Allotropes

60. Galvanised iron sheets have a coating of which metal?
Answer – Zinc

61. Which are the high-temperature superconductors?
Answer – Ceramic oxides

62. By which can the location and energy of an electron in an atom be specified?
 Answer – Quantum numbers

63. If a proton of mass m is moving with velocity of light, how will its mass?
Answer – Unchanged

64. A deuterium nucleus consists of which particles?
 Answer – One proton and one neutron

65. Stainless steel is an alloy of which metals?
Answer – Iron, chromium and nickel

66. Which form of phosphorus is used in safety matches?
Answer – Red phosphorus

67. Which is the gas used to extinguish fire?
Answer – Carbon dioxide

68. Which is the element common to all acids?
Answer – Hydrogen

69. Which is the substance which can act both as an acid and a base?
Answer – Amphoteric

70. Which was the gas which had leaked out of Union Carbide factory in Bhopal?
Answer – Methyl isocynate

71. Which metal is found in ‘plaster of pairs’ ?
Answer – Calcium

72. Which is the main ingredient in cement ?
Answer – Lime stone

73. Which is the basis of modern periodic table?
Answer – Atomic number

74. Which are the important raw materials required in cement industry ?
Answer – Limestone and clay

75. What is the major ingredient of leather?
Answer – Collagen

76. Which metal is used for making boats because it does not corrode by seawater?
Answer – Titanium

77. Which nontoxic gas helps in formation of enzymes which ripen fruit?
 Answer – Acetylene

78. Uranium eventually decays into a stable isotope of element?
Answer – Lead

79. Which contain high content of lead?
 Answer – High octane fuel

80. Which is used in beauty parlours for’ hair setting?
Answer – Sulphur

81. The filament of an electric bulb is made of which metal?
Answer – Tungsten

82. What is the average salinity of sea water?
Answer – 3.5%

83. Which isotope of uranium capable of sustaining chain reactions?
Answer – U-235

84. Which is used as a filler in rubber tyres ?
Answer – Carbon black

85. By whom was the quantum theory first enunciated?
Answer – By Max Planck

86. Which charcoal is used to deeolourise raw sugar?
Answer – Wood charcoal

87. Which is the most important ore of aluminium?
Answer – Bauxite

88. Which is the metal used in storaoe batteries?
Answer – Lead

89. How are Oxygen and ozone?
Answer – Allotropes

90. Which is the best conductor of electricity ?
Answer – Silver

91. ‘Gobar gas’ contains mainly which gas?
Answer – Methane

92. Which is the gas usually filled in the electric bulb?
Answer – Nitrogen

93. Which are the Actinides elements with atomic numbers?
Answer – From 89 to 103

94. Which elements is obtained from sea weeds?
Answer – Iodine

95. Which type of glass is used in making lenses and prisms?
 Answer – Flint glass

96. Rusting of iron is an example of which thing?
Answer – Slow oxidation

97. Which is also called Stranger Gas?
Answer – Xenon

98. Which chemical is used in foam fire extinguishers?
Answer – Aluminium sulphate

99. Which substance is used to retard the setting action of cement?
Answer – CaSO.2HO

100. What is a mixture of potassium nitrate, powdered charcoal and sulphur called?
Answer – Gun powder

PSC General Knowledge questions and answer - Chemistry

PSC basics computer  G K questions and answers:- https://a2zgkinfo.blogspot.com/2017/12/computer-science-g-k.html

PSC General Knowledge questions and answer:-https://a2zgkinfo.blogspot.com/2017/12/psc-general-knowledge-questions-and.html

PSC Questions and answers - English:- https://a2zgkinfo.blogspot.com/2017/12/psc-questions-and-answers-english.html