The principal constituent of the atmosphere of the Earth is...? Mcqs

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The principal constituent of the atmosphere of the Earth is...?

(A) Oxygen
(B) Carbon

(C) Hydrogen
(D) Nitrogen

Latest MCQs

During which process a gas becomes a liquid...?

(A) Melting
(B) Freezing

(C) Condensing
(D) Boiling

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Which is the only planet that rotates clockwise...?

(A) Jupiter
(B) Venus

(C) Earth
(D) Mercury

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One of the main function of the earth’s ozone layer is to ...?

(A) Prevent global warming
(B) Filter out ultraviolet rays

(C) Absorb pollution
(D) All of the above

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Oil rises in a wick of oil lamp on account of a property of matter is called...?

(A) Angle of projection
(B) Determines

(C) Capillary action
(D) Refraction of light

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Increase of the size (length, area and volume) of a body due to change in temperature is called _____...?

(A) Thermal Expansion
(B) Thermal Contraction

(C) Thermal Density
(D) Thermal Compression

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1 tonne = _____ kg...?

(A) 100
(B) 400

(C) 1000
(D) 4000

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Liquid secreted by the pancreas, which contains a variety of _____...?

(A) Hormones
(B) Vitamins

(C) Acids
(D) Enzymes

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Cancer can be treated by ...?

(A) Antibiotics & vaccines
(B) Radiotherapy & antibiotics

(C) Chemotherapy & radiotherapy
(D) Antibiotics & Chemotherapy

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UV light falls in the category of___________...?

(A) Ionizing Radiations
(B) Non Ionizing Radiation

(C) Visible light
(D) None

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