320 Science MCQ Questions in english

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320 Science MCQ Questions in english हिन्दी

Read science multiple choice questions for the various types of competitive exams. These science questions will help students to prepare for their exams. Improve your Science subject knowledge by reading these science questions.

96. Which radioactive contaminant recently caught the attention of the public because it was found in construction materials?

A. Radium

B. Thorium

C. Radan

D. Plutonium

95. Using the nautical mile as a unit of measurement,

A. Road mile

B. Navigation

C. Measuring the boundaries of a nation

D. Astronomy

94. Which of the following is a unit of speed known as a knot?

A. Light waves

B. Ship

C. Aeroplane

D. Sound waves

93. Which of the following is utilised in nuclear reactors as a moderator?

A. Ordinary water

B. Thorium

C. Graphite

D. Radium

92. Which of the following is a radioactive element's positively charged particle?

A. Cathode ray

B. Gamma ray

C. Alpha ray

D. Beta ray

91. Atoms are made up of:

A. Protons only

B. Electrons and Nuclei

C. Electrons and protons

D. Electrons only

90. The unit for bars is

A. Heat

B. Temperature

C. Current

D. Atmospheric pressure

89. Which of the following gases undergoes decrease during the process?

A. Carbon

B. Oxygen

C. Helium

D. Hydrogen

88. Kilowatt is a measurement unit for:

A. Power

B. Work

C. Current

D. Electricity

87. Electric current can be detected using:

A. Ammeter

B. Commutator

C. Anemometer

D. Voltmeter

86. Using a chronometer, you can:

A. Water waves

B. Colour contrast

C. Sound waves

D. Time

85. A light year is a unit of

A. Stellar distances

B. Speed of rockets

C. Speed of aeroplanes

D. Speed of light

84. Accurate measurements of very brief time periods are made via

A. Pulsars

B. Atomic clocks

C. Quartz clocks

D. White dwarfs

83. How many miles are in one kilometre?

A. 1.6

B. 0.84

C. 0.62

D. 0.5

82. Kilohertz is a frequency measurement unit.

A. Electromagnetic radio wave frequencies

B. Voltage

C. Electric resistance

D. Power used by a current of one ampere

81. Equating one horse power to

A. 748 watts

B. 756 watts

C. 736 watts

D. 746 watts

80. What is the measurement method for sound amplitude?

A. Hum

B. Cycles

C. Coulomb

D. Decibel

79. A barometer's declining reading is a sign that

A. Storm

B. Rainfall

C. Snow

D. Intense heat

78. Decibel is a measure of

A. Intensity of heat

B. Speed of light

C. Intensity of sound

D. Radio wave frequency

77. Equals one fathom in depth.

A. 60 feet

B. 6 feet

C. 6 meters

D. 100 cm

76. A fathom is a measure of

A. Frequency

B. Distance

C. Depth

D. Sound

75. An amalgam is:

A. Alloys which contain mercury as one of the contents

B. Highly coloured alloys

C. Alloys which contain carbon

D. Alloys which have great resistance to abrasion

74. Which of the following metals has the lowest density?

A. Lead

B. Silver

C. Lithium

D. Mercury

73. Which of the following metals can you normally find in liquid form?

A. Mercury

B. Uranium

C. Radium

D. Zinc

72. Water purification using potassium permanganate is utilised because

A. It dissolves the impurities of water.

B. It is an oxidising agent.

C. It is a sterilising agent

D. It is a reducing agent

71. That which follows is an element

A. Emerald

B. Diamond

C. Sapphire

D. Ruby

70. What metal causes air pollution in large cities?

A. Lead

B. Cadmium

C. Copper

D. Chromium

69. An alloy known as bell metal is

A. Brass and Nickel

B. Nickel and Copper

C. Tin and Copper

D. Zinc and Copper

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320 Science MCQ Questions in english हिन्दी

96. Which radioactive contaminant recently caught the attention of the public because it was found in construction materials?

95. Using the nautical mile as a unit of measurement,

94. Which of the following is a unit of speed known as a knot?

93. Which of the following is utilised in nuclear reactors as a moderator?

92. Which of the following is a radioactive element's positively charged particle?

91. Atoms are made up of:

90. The unit for bars is

89. Which of the following gases undergoes decrease during the process?

88. Kilowatt is a measurement unit for:

87. Electric current can be detected using:

86. Using a chronometer, you can:

85. A light year is a unit of

84. Accurate measurements of very brief time periods are made via

83. How many miles are in one kilometre?

82. Kilohertz is a frequency measurement unit.

81. Equating one horse power to

80. What is the measurement method for sound amplitude?

79. A barometer's declining reading is a sign that

78. Decibel is a measure of

77. Equals one fathom in depth.

76. A fathom is a measure of

75. An amalgam is:

74. Which of the following metals has the lowest density?

73. Which of the following metals can you normally find in liquid form?

72. Water purification using potassium permanganate is utilised because

71. That which follows is an element

70. What metal causes air pollution in large cities?

69. An alloy known as bell metal is

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