469 MCQ Questions in english

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469 MCQ Questions in english हिन्दी

77. Iron oxide is created when an iron nail rusts.

A. With decrease in the weight of the nail

B. Without any change in the weight of the nail

C. Without any change in colour or weight of the nail

D. With increase in the weight of the nail

76. The coating on galvanized iron sheets is

A. Chromium

B. Zinc

C. Tin

D. Lead

75. Among the different carbon allotropes

A. Diamond is the hardest, graphite is the softest

B. Diamond is the hardest, lamp black is the softest

C. Coke is the hardest, graphite is the softest

D. Diamond is the hardest, coke is the softest

74. Where does a computer's data get added and compared?

A. CPU

B. Memory

C. Hard disk

D. Floppy disk

73. Carl Lewis, a track and field champion, won how many gold medals in the 1984 Olympics?

A. Two

B. Three

C. Four

D. Eight

72. Mark Taylor, the former Australian captain, has had various nicknames throughout his playing career. Which of the following were not among them?

A. Tubby

B. Stodge

C. Helium Bat

D. Stumpy

71. What else is Ricky Ponting known as?

A. The Rickster

B. Ponts

C. Ponter

D. Punter

70. Which of the following work as lubricant?

A. Iron Oxide

B. Diamond

C. Silica

D. Graphite

69. Lead tetraethyl is used as

A. Mosquito Repellent

B. Fire Extinguisher

C. Pain Killer

D. Petrol Additive

68. The inert gas that deep sea divers use to breathe in place of the nitrogen in the air is

A. Helium

B. Argon

C. Xenon

D. Krypton

67. The gases utilised in various forms of welding consist;

A. Oxygen, Hydrogen, Acetylene and Nitrogen

B. Oxygen and Acetylene

C. Oxygen, Acetylene and Argon

D. Oxygen and Hydrogen

66. When a material is exposed to air, it has the ability to absorb moisture from

A. Efflorescence

B. Desiccation

C. Deliquescence

D. Osmosis

65. Typically employed in quartz clocks and other devices, quartz crystals are chemically

A. A mixture of Germanium Oxide and Silicon dioxide

B. Sodium Silicate

C. Germanium Oxide

D. Silicon Dioxide

64. Which gas is not referred to as a greenhouse gas?

A. Nitrous oxide

B. Methane

C. Hydrogen

D. Carbon dioxide

63. A kilobyte is equivalent to...?

A. 1000 bytes

B. 100 bytes

C. 1024 bytes

D. 1023 bytes

62. What is bromine?

A. Red Liquid

B. Colourless Gas

C. Highly Inflammable Gas

D. Black Solid

61. The material that is the toughest on earth is

A. Iron

B. Gold

C. Platinum

D. Diamond

60. The type of coal where the deposit may be seen to include remnants of the original plant matter is

A. Lignite

B. Bitumen

C. Peat

D. Anthracite

59. Prothrombin, a substance that aids in blood clotting, is released by

A. lymphocytes

B. monocytes

C. blood platelets

D. erythrocytes

58. How many buses are connected to the microprocessor 8085?

A. 2

B. 3

C. 5

D. 8

57. An assembler is?

A. Programming language-dependent

B. Syntax dependant

C. Machine dependant

D. Data dependant

56. What ingredient(s) is(are) utilised in pencils?

A. Charcoal

B. Silicon

C. Phosphorous

D. Graphite

55. Which of the following metals combines with other metals to produce an amalgam?

A. Mercury

B. Tin

C. Zinc

D. Lead

54. Water's chemical formula is

A. NaA1O2

B. Al2O3

C. CaSiO3

D. H2O

53. Typically, the gas in an electric bulb is

A. Hydrogen

B. Carbon dioxide

C. Nitrogen

D. Oxygen

52. The generic term for washing soda is

A. Calcium Bicarbonate

B. Sodium Carbonate

C. Calcium Carbonate

D. Sodium Bicarbonate

51. The filament used in electric light bulbs is made up of

A. Copper

B. Aluminium

C. Lead

D. Tungsten

50. The name of the tree that roots from its branches into the ground is:

A. Oak

B. Pine

C. Banyan

D. Palm

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