Everyday Science MCQs

Page No. 16

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


aChromatography


bFractional distillation


cSublimation


dNone of these


View Answer Sublimation

What is the chemical formula for Sodium carbonate _______ ?


aNa3CO2


bCNa2O3


cNa2CO3


dNa3CO3


View Answer Na2CO3

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


aTurmeric on filter paper


bSilica gel coated with silver nitrate


cPotassium dichromatic-sulphuric acid


dpotassium permanganate-sulphuric acid



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


aCarbon dioxide


bOxygen


cNitrogen


dHydrogen sulphide


View Answer Hydrogen sulphide

Hydrogen bomb is based on the principle of ________ ?


aNuclear fusion


bArtificial radioactivity


cNatural radioactivity


dNuclear fission


View Answer Nuclear fusion

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


aIsotopes


bIsomers


cAllotropes


dAllomers


View Answer Isotopes

Proton number is denoted by symbol __________ ?


aM


bZ


cP


dA


View Answer Z

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


aAmmonia gas


bChlorine


cOxygen


dHydrogen gas


View Answer Hydrogen gas

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


aBlood Cancer


bColorectal Cancer


cLung Cancer


dProstate Cancer


View Answer Colorectal Cancer

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


aRadiology


bRaciology


cRheumatology


dRheology


View Answer Radiology

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