The chemical name of quartz is:...? Mcqs

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The chemical name of quartz is:...?

(A) Silicon Dioxide
(B) Stannous Oxide

(C) Aluminium Oxide
(D) None

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In a railway track, two rails are joined end to end with a gap tin between them because...?

(A) Steel can be saved
(B) Accidents due to contraction in winter can be avoided

(C) Air gaps are necessary for bearing the weight of running train
(D) Accidents due to expansion in summer can be avoided

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The symbolic representation of molecule of a compound is called...?

(A) Equation
(B) Structure

(C) Formula
(D) Reaction

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When light passes through prism _____ occurs to form spectrum....?

(A) Refraction
(B) Reflection

(C) Diffraction
(D) None

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A _______ is an object with at least one slanting side ending in a sharp edge, which cuts material apart....?

(A) Pulley
(B) Inclined Plane

(C) Lever
(D) Wedge

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Electronics comprises the _________...?

(A) Physics
(B) Engineering

(C) Technology
(D) All of these

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2 moles of sodium chloride (NaCl) is equal to...?

(A) 123 grams
(B) 135 grams

(C) 158 grams
(D) 117 grams

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The group containing only electromagnetic waves is ______...?

(A) Light waves, Radio waves, Microwaves
(B) Light waves, Radio waves, Sound waves

(C) Light waves, Sound waves, Microwaves
(D) Radio waves, Sound waves, Microwaves

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Hypocotyl hook is formed during the germination of...?

(A) Bean Seed
(B) Maize Seed

(C) Apple Seed
(D) None

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The permanent hardness of water is due to presence ______...?

(A) MgSO4
(B) Mg(HCO3)₂

(C) CA(HCO3)2
(D) All of these

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