Everyday Science MCQs

Page No. 16

A mixture of sand and naphthalene can be separated by ________ ?


aChromatography

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bFractional distillation

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cSublimation

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dNone of these

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View Answer Sublimation

What is the chemical formula for Sodium carbonate _______ ?


aNa3CO2

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bCNa2O3

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cNa2CO3

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dNa3CO3

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View Answer Na2CO3

A ‘breath test’ used by traffic police to check drunken driving uses ____?


aTurmeric on filter paper

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bSilica gel coated with silver nitrate

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cPotassium dichromatic-sulphuric acid

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dpotassium permanganate-sulphuric acid

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


aCarbon dioxide

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bOxygen

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cNitrogen

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dHydrogen sulphide

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View Answer Hydrogen sulphide

Hydrogen bomb is based on the principle of ________ ?


aNuclear fusion

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bArtificial radioactivity

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cNatural radioactivity

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dNuclear fission

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View Answer Nuclear fusion

Elements which have same number of protons but different number of neutrons are called as _________ ?


aIsotopes

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bIsomers

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cAllotropes

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dAllomers

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View Answer Isotopes

Proton number is denoted by symbol __________ ?


aM

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bZ

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cP

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dA

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View Answer Z

When an acid reacts with a metal, which one of the following gas is usually liberated?


aAmmonia gas

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bChlorine

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cOxygen

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dHydrogen gas

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View Answer Hydrogen gas

The protein Improtin-11, that was recently identified by scientists, is linked with causing which type of cancer?


aBlood Cancer

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bColorectal Cancer

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cLung Cancer

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dProstate Cancer

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View Answer Colorectal Cancer

The study of X-rays and their medical applications is called _________ ?


aRadiology

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bRaciology

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cRheumatology

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dRheology

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View Answer Radiology

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