In the Composition of the earth, Aluminum is _______________...? Mcqs

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In the Composition of the earth, Aluminum is _______________...?

(A) 27.5%
(B) 20.3%

(C) 14.5%
(D) 8.23%

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Which of the following equations represents a decomposition reaction...?

(A) A+B → AB
(B) A → AB

(C) AB → AC
(D) AB → A+B

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During the process, more water will also evaporate and convert to a gaseous state of water called the...?

(A) Water Liquid
(B) Water Solid

(C) Water Vapour
(D) Water Ice

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In human, Which body part develop first ...?

(A) Heart
(B) Brain

(C) Lungs
(D) Kidneys

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Material for rain-proof coats and tents owe their water proof properties to ________...?

(A) Surface tension
(B) Viscosity

(C) Specific gravity
(D) Elasticity

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Sunlight is composed of___________...?

(A) Three colours
(B) six colours

(C) seven colours
(D) eight colours

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Dioptre is used to measure...?

(A) optical power
(B) luminous intensity

(C) power
(D) distance of heavenly bodies

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As we go higher into the atmosphere, the air becomes...?

(A) Thinner
(B) Denser

(C) Warmer
(D) Visible

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Brass gets discoloured in air because of the presence of which of the following gases in air ________ ...?

(A) Carbon dioxide
(B) Oxygen

(C) Nitrogen
(D) Hydrogen sulphide

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Dry ice is ___________...?

(A) Methane hydrate
(B) Liquid Nitrogen

(C) Solid Carbon dioxide
(D) Frozen Water

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