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Which gas is used in the manufacturing of soft drinks and carbonated beverages?

AOxygen

BCarbon dioxide

CNitrogen

DHydrogen

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Rusting of iron is an example of which type of chemical process?

AReduction

BOxidation

CSublimation

DEvaporation

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Which acid is present in lemon juice?

AAcetic acid

BCitric acid

CLactic acid

DTartaric acid

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Chemical name of common table salt is:

ASodium Carbonate

BSodium Bicarbonate

CSodium Chloride

DSodium Hydroxide

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pH value of pure water at room temperature (25°C) is:

A0

B5

C7

D14

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What is the main chemical constituent of natural gas?

AEthane

BPropane

CMethane

DButane

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Escape velocity from the surface of Earth is approximately:

A9.8 km/s

B11.2 km/s

C15.0 km/s

D25.2 km/s

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The principle behind the working of a hydraulic lift is based on:

AArchimedes' Principle

BBernoulli's Principle

CPascal's Law

DBoyle's Law

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Why does ice float on water?

AIce is denser than liquid water

BIce is less dense than liquid water

CIce absorbs air bubbles

DSurface tension holds ice above water

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Unit of electrical resistance in the International System of Units (SI) is:

AVolt

BAmpere

COhm

DWatt

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