Chemistry MCQs

Page No. 34

Borax is a white crystalline solid and it is_________________?


aMore soluble in cold water


bMore soluble in hot water


cInsoluble in water


dSoluble only in organic solvents



One of the outstanding features of boron is its ability to form__________________?


aMolecular addition compounds


bMolecular crystals


cSemiconductors


dIonic compounds



Boron is non-netal whereas A1 is metal. It is due to_______________________?


aSmall size


bHigh nuclear charge


cBoth A and B


dNo authorized justification yet


View Answer Both A and B

Ozonolysis of benzene produces___________________?


aGlycol


bGlyoxal


cVicinal diol


dboth B & C


View Answer Glyoxal

The preparation of benzene from acetylene can also be said as_________________?


aoxidation


bPolymerization


cDehydration


dCondensation


View Answer Polymerization

Benzene is heated in air with V2O5 at 450°C it undergoes________________?


aSubstitution reaction


bAddition reaction


cElimination reaction


dOxidation reaction


View Answer Oxidation reaction

Nitronium ion is___________________?


aNO3


bNO


cNO2-


dNO2+


View Answer NO2+

Benzene does not undergo___________________?


aSubstitution reaction


bAddition reaction


cPolymerization reactions


dOxidation reactions



Acetophenone is a_____________________?


aEther


bketone


cAldehyde


dEster


View Answer ketone

Which is fused cyclic aromatic compound _____________________?


adiphenyl amine


bdiphenyl methane


cnaphthalene


dbiphenyl


View Answer naphthalene

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