Which law states that the rate of the effusion of a gas is inversely proportional to the square root of its density...? Mcqs

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Which law states that the rate of the effusion of a gas is inversely proportional to the square root of its density...?

(A) Graham’s Law
(B) Gay-Lussac’s law

(C) Boyle’s law
(D) None of these

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Which woody raw material is used for the manufacture of paper pulp...?

(A) Cotton
(B) Poplar

(C) Bagasse
(D) Rice straw

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The extremely cold temperatures in the polar region of moon mean that it can act as a kind of __________ where things do not undergo much change....?

(A) Time capsule
(B) Light capsule

(C) Meta capsule
(D) Natural capsule

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Animals in grassland environment have broad feet for fast...?

(A) Escape
(B) Swimming

(C) Climbing
(D) None

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The process of vaporizing a solid substance and condensing the vapours to form the solid directly is known as...?

(A) Distillation
(B) Sublimation

(C) Filtration
(D) Crystallization

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Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ...?

(A) Zeolites
(B) Sulphonides

(C) Lime
(D) Nitrates

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Work done per unit time is called ______...?

(A) Efficiency
(B) Energy

(C) Power
(D) Force

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A method which is used to separate coloured chemicals or substances, especially dyes is known as...?

(A) Filtration
(B) Sublimation

(C) Paper chromatography
(D) Distillation

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Examples of _______ properties involved melting, transition to a gas, change of durability and changes to crystal form....?

(A) Physical
(B) Chemical

(C) Nuclear
(D) Biological

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The unit of torque in International system of unit is _________...?

(A) Newton
(B) Newton-Meter

(C) Kilogram
(D) Meter

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