Everyday Science MCQs

Page No. 86

The total energy of revolving electron in an atom_____________


aWill always be positive

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bCan never be positive

✓


cCan have any value above zero

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dCannot be negative

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View Answer Can never be positive

Muscle fatigue is caused by the accumulation of___________?


aUric acid

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bLactic acid

✓


cOxalacetic acid

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dFyruvie acid

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View Answer Lactic acid

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


aPlutonium

✓


bUranium

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cRadium

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dThorium

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View Answer Plutonium

What is the element required for solar energy conversion ______?


aUltra pure carbon

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bSilicon

✓


cBeryllium

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dTantalum

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View Answer Silicon

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


a0.5

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b0.9

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c0.85

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d0.75

✓


View Answer 0.75

Which pollutant from motor car exhaust causes mental disease _____?


aCarbon Dioxide

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bLead

✓


cSulpher Dioxide

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dMercury

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View Answer Lead

Spinach leaves are rich source of________


aAmino acid

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bIron

✓


cVitamin E

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dCarotene

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View Answer Iron

Galvanised Iron sheets have a coating of____________


aTin

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bSilver

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cZinc

✓


dchromium

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View Answer Zinc

Phobos is the natural satellite of which planet__________ ?


aMars

✓


bVenus

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cSaturn

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dNeptune

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View Answer Mars

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


aAlkaline

✓


bAcidic

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cWaterlogged

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dSoil with excessive clay content

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View Answer Alkaline

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