Chemistry MCQs

Page No. 37

How many electrons are there in benzene to form delocalized electron cloud________________?


a3

✖


b4

✖


c6

✓


d8

✖


View Answer 6

Phenanthrene is a fused polycyclic compound contains __________ benzene rings ?


aTwo

✖


bThree

✓


cFour

✖


dFive

✖


View Answer Three

Addition of 2% gypsum in cement________________?


aTriggers hydration

✖


bTriggers hydrolysis

✖


cPrevents rapid hardening

✓


dall of the above

✖



Which one can form complex ?


aNa

✖


bCr

✖


cLi

✓


dK

✖


View Answer Li

Second ionization potential of alkali metals are very high due to_______________?


abeing s-block elements

✖


binert gas configurations

✓


cns1 electronic configuration

✖


dbeing metals

✖



Magnesium metal does not burn in the vessel containing_______________?


aN2

✖


bO2

✖


cN2 and O2

✖


dNe

✓


View Answer Ne

Sodium is not observed in +2 oxidation state because of its__________________?


ahigh first ionization potential

✖


bhigh second ioniation potential

✓


chigh ionic radius

✖


dhigh electronegativity

✖



Which one of the following pairs shown diagonal relationship in the periodic table ?


aSodium and Lithium

✖


bLithium and magnesium

✓


cLithium and beryllium

✖


dBoron and Beryllium

✖


View Answer Lithium and magnesium

Which one of the following alkali metals forms only normal oxide when it reacts with O2 ?


aLithium

✓


bSodium

✖


cPotassium

✖


dRubidium

✖


View Answer Lithium

Gypsum is applied to the soil as a source of________________?


aCa and P

✖


bS and P

✖


cCa and S

✓


dwe could not apply

✖


View Answer Ca and S

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