Chemistry MCQs

Page No. 19

Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is_________________?


aoxidation

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belimination

✖


ccondensation polymerization

✓


dadditional polymerization

✖



Heating phenol with Zn will yield_________________?


aBenzene

✓


bBenzoic acid

✖


cPhenoxide

✖


dCyclohexane

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View Answer Benzene

Which compound is also known by the name of carbolic acid ?


aC2H2OH

✖


bH2CO3

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cC6H5OH

✓


dH3PO3

✖


View Answer C6H5OH

Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate ?


aPrimary alcohol

✖


bSecondary alcohol

✖


cTertiary alcohol

✓


dAll of the above

✖


View Answer Tertiary alcohol

K2Cr2O7/H2SO4 generate____________________?


aoxygen

✖


bhydrogen

✖


cNascent oxygen[O]

✓


dNascent hydrogen[H]

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View Answer Nascent oxygen[O]

The process of fermentation of starch involve many enzymes the sequence of enzymes used are____________________?


aDiastase-maltase-zymase

✓


bZymase-maltase-diastase

✖


cMaltase-diastase-zymase

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dDiastase-zymase-maltase

✖



The residue obtained after the crystallization of sugar from concentrated sugar cane juice is called__________________?


aMother liquor

✖


bFiltrate

✖


cExtract

✖


dMolasses

✓


View Answer Molasses

Which one of the following is also known as tartaric acid ?


a2 3-dihydroxy butance 1 4 -dioic acid

✓


b2 3 -dihydroxy butanedioic acid

✖


c2 3 -dihydroxy butanoic acid

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d2 2 -dihydroxy butanoic acid

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Which one of the following is termed as benzul alcohol ?


aC6H5OH

✖


bC6H5CH(OH)2

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cC6H5CH2OH

✓


dC6H5COOH

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View Answer C6H5CH2OH

Alkyl halides undergo a type of reaction_________________?


aNucleophilic substitution

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bNucleophilic addition

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cElimination

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dBoth A and C

✓


View Answer Both A and C

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