Chemistry MCQs

Page No. 32

The process of aluminium extraction is called__________________?


aHall process

✓


bThermite process

✖


cHaber process

✖


dContact process

✖


View Answer Hall process

Which one of the following is not a semiconductor ?


aSi

✖


bGe

✖


cSe

✖


dSn

✓


View Answer Sn

Tincal is a mineral of___________________?


aAl

✖


bSi

✖


cB

✓


dC

✖


View Answer B

Which of the following shows inert pair effect ?


aboron

✖


bcarbon

✖


csilicon

✖


dtin

✓


View Answer tin

The metal which is used in thermite process because of its activity is____________________?


airon

✖


bcopper

✖


caluminium

✓


dzinc

✖


View Answer aluminium

Which of the following does not give Borax bead test ?


aCu

✖


bCr

✖


cNi

✖


dAl

✓


View Answer Al

Substance which is found in dried up lakes of Tibet and California is_______________?


aTincal

✓


bBoric acid

✖


cCalcium carbonate

✖


dColemanite

✖


View Answer Tincal

Boron in soil has been considered micronutrient for_________________?


aSoil porocity

✖


bProper growth of plants

✓


cAlkalinity of soil

✖


dAll

✖



Which of the following is metasilicic acid ?


aH2SnO3

✖


bH2SiO3

✓


cH3AsO4

✖


dH3SbO4

✖


View Answer H2SiO3

Which of the following will decompose to produce litharge_________________?


aPb2O

✖


bPb3O4

✓


cPbO2

✖


dAll of the above

✖


View Answer Pb3O4

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