Chemistry MCQs

Page No. 5

The type of hybridisation of boron in diborane is______?


aSp- hybridisation


bSp2- hybridisation


cSp3- hybridisation


dSp3D2- hybridisation


View Answer Sp- hybridisation

Which of the following element has the maximum electron affinity_____?


aCl


bBr


cI


dF


View Answer Cl

The structure of H2O2 is_______?


aPlanar


bNon- polar


cSpherical


dLinear


View Answer Non- polar

The volume strength of 1.5 N H2O2 solution is_______?


a8.8


b4.8


c8.4


d5.2


View Answer 8.4

A 10 volume solution of H2O2 means_______?


a10 grams of solution of H2O2 liberates 10 mL of O2 at STP


b10 gram equivalents of H2O2 liberates 10 mL of O2 at STP


c10 litres of H2O2 liberates 19 mL of O2 at STP


d1mL of solution of H2O2 liberates 10 mL of O2 at STP



Electronic Configuration of Calcium (Ca) atom may be written as________?


aNe, 4p2


bAr, 4s2


cNe, 4s2


dKr, 4p2


View Answer Ar, 4s2

Ce58 is a member of__________?


as-block


bp-block


cd-block


df-block


View Answer f-block

Basicity of orthophosphoric acid is________?


a2


b3


c4


d5


View Answer 3

Gypsum is______?


aCaSO4,1/2H2O


bCaSO4,2H2O


cCaSO4,4H2O


dCaSO4,3H2O


View Answer CaSO4,2H2O

In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________?


aCaO+ SiO2——> CaSiO3


b2FeS+3O2——–> 2Fe+ SO2


cFeSiO3———> FeSiO3


dFe2O3+ 3CO——–> 2Fe+ 3CO2



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