The atmospheric greenhouse effect is produced mainly by the __________________...? Mcqs

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The atmospheric greenhouse effect is produced mainly by the __________________...?

(A) Absorption and re-emission of visible light by the atmosphere
(B) Absorption and re-emission of ultraviolet radiation by the atmosphere

(C) Absorption and re-emission of infrared radiation by the atmosphere
(D) Absorption and re-emission of visible light by clouds

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The good sources of Vitamin-C are________...?

(A) green leafy vegetables
(B) seeds

(C) fresh vegetables and fruits
(D) sea foods

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If output voltage is greater than input voltage, then transformer is :...?

(A) Step up
(B) Step down

(C) Faulty
(D) None of These

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Main constituent in air is ___________...?

(A) Oxygen
(B) Nitrogen

(C) Hydrogen
(D) Helium

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One Gross is equal to___________...?

(A) 5 Dozen
(B) 10 Dozen

(C) 12 Dozen
(D) None of them

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With the increase in temperature, heat will be...?

(A) Increase
(B) Decrease

(C) Remain constant
(D) None

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Pascal’s Principle is widely used in a _____...?

(A) Electrical System
(B) Hydraulic System

(C) Pneumatic System
(D) Mechanical System

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_________ extends from the top of the troposphere to the bottom of the mesosphere....?

(A) Thermosphere
(B) Ionosphere

(C) Stratosphere
(D) None of the above

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Dr. Abdus Salam of Pakistan was one of the contributors of the unification of __________...?

(A) Electromagnetic force and gravitational force
(B) Electromagnetic force and weak nuclear force

(C) Gravitational force and weak nuclear force
(D) Weak nuclear force and strong nuclear force

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How many times the proton is heavier than an electron...?

(A) 1030
(B) 1205

(C) 1650
(D) 1836

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