Everyday Science MCQs

Page No. 86

The total energy of revolving electron in an atom_____________


aWill always be positive


bCan never be positive


cCan have any value above zero


dCannot be negative


View Answer Can never be positive

Muscle fatigue is caused by the accumulation of___________?


aUric acid


bLactic acid


cOxalacetic acid


dFyruvie acid


View Answer Lactic acid

An element that does not occur in nature but can be produced artificially is__________?


aPlutonium


bUranium


cRadium


dThorium


View Answer Plutonium

What is the element required for solar energy conversion ______?


aUltra pure carbon


bSilicon


cBeryllium


dTantalum


View Answer Silicon

The ratio of pure gold in 18 carat gold is _______________?


a0.5


b0.9


c0.85


d0.75


View Answer 0.75

Which pollutant from motor car exhaust causes mental disease _____?


aCarbon Dioxide


bLead


cSulpher Dioxide


dMercury


View Answer Lead

Spinach leaves are rich source of________


aAmino acid


bIron


cVitamin E


dCarotene


View Answer Iron

Galvanised Iron sheets have a coating of____________


aTin


bSilver


cZinc


dchromium


View Answer Zinc

Phobos is the natural satellite of which planet__________ ?


aMars


bVenus


cSaturn


dNeptune


View Answer Mars

what kind of soil is treated with gypsum to make it suitable for cropping______?


aAlkaline


bAcidic


cWaterlogged


dSoil with excessive clay content


View Answer Alkaline

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