Chemistry MCQs

Page No. 34

Borax is a white crystalline solid and it is_________________?


aMore soluble in cold water

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bMore soluble in hot water

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cInsoluble in water

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dSoluble only in organic solvents

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


aMolecular addition compounds

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bMolecular crystals

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cSemiconductors

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dIonic compounds

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


aSmall size

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bHigh nuclear charge

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cBoth A and B

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dNo authorized justification yet

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View Answer Both A and B

Ozonolysis of benzene produces___________________?


aGlycol

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bGlyoxal

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cVicinal diol

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dboth B & C

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View Answer Glyoxal

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


aoxidation

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bPolymerization

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cDehydration

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dCondensation

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View Answer Polymerization

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


aSubstitution reaction

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bAddition reaction

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cElimination reaction

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dOxidation reaction

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View Answer Oxidation reaction

Nitronium ion is___________________?


aNO3

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bNO

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cNO2-

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dNO2+

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View Answer NO2+

Benzene does not undergo___________________?


aSubstitution reaction

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bAddition reaction

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cPolymerization reactions

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dOxidation reactions

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Acetophenone is a_____________________?


aEther

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bketone

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cAldehyde

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dEster

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View Answer ketone

Which is fused cyclic aromatic compound _____________________?


adiphenyl amine

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bdiphenyl methane

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cnaphthalene

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dbiphenyl

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View Answer naphthalene

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