508 MCQ Questions in english

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508 MCQ Questions in english हिन्दी

88. Heavy water is defined as:

A. Rain water

B. Deuterium oxide

C. PH7

D. Tritium oxide

87. The group of metals Fe, Co, and Ni is best known as:

A. Main group metals

B. Alkali metals

C. Transition metals

D. Rare metals

86. The chemical (Ethyl Mercaptan) added to otherwise odourless LPG cooking gas to give it a perceptible odour is a compound of:

A. Chlorine

B. Bromine

C. Sulphur

D. Fluorine

85. The element that all acids share is

A. Oxygen

B. Sulphur

C. Hydrogen

D. Carbon

84. Cooking utensils that are nonstick are coated with

A. Teflon

B. Black paint

C. Polystyrene

D. PVC

83. Silicon carbide is used in which of the following activities?

A. Disinfecting water of ponds

B. Cutting very hard substances

C. Making cement and glass

D. Making casts for statues

82. What did George Westinghouse invented?

A. Light bulb

B. Electric razor

C. Refrigerator

D. Railway air brakes

81. What is the approximate salinity of seawater?

A. 2.5%

B. 3%

C. 3.5%

D. 2%

80. 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

79. Who is the only U.S. President to invent and patent something?

A. Abraham Lincoln

B. Theodore Roosevelt

C. Thomas Jefferson

D. Rutherford B. Hayes

78. The coating on galvanized iron sheets is

A. Chromium

B. Zinc

C. Tin

D. Lead

77. 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

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

A. CPU

B. Memory

C. Hard disk

D. Floppy disk

75. What else is Ricky Ponting known as?

A. The Rickster

B. Ponts

C. Ponter

D. Punter

74. Which of the following work as lubricant?

A. Iron Oxide

B. Diamond

C. Silica

D. Graphite

73. Lead tetraethyl is used as

A. Mosquito Repellent

B. Fire Extinguisher

C. Pain Killer

D. Petrol Additive

72. 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

71. 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

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

A. Efflorescence

B. Desiccation

C. Deliquescence

D. Osmosis

69. 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

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

A. Nitrous oxide

B. Methane

C. Hydrogen

D. Carbon dioxide

67. A kilobyte is equivalent to...?

A. 1000 bytes

B. 100 bytes

C. 1024 bytes

D. 1023 bytes

66. What is bromine?

A. Red Liquid

B. Colourless Gas

C. Highly Inflammable Gas

D. Black Solid

65. The material that is the toughest on earth is

A. Iron

B. Gold

C. Platinum

D. Diamond

64. 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

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

A. lymphocytes

B. monocytes

C. blood platelets

D. erythrocytes

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

A. 2

B. 3

C. 5

D. 8

61. An assembler is?

A. Programming language-dependent

B. Syntax dependant

C. Machine dependant

D. Data dependant

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