Chemistry MCQs

Page No. 19

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


aoxidation


belimination


ccondensation polymerization


dadditional polymerization



Heating phenol with Zn will yield_________________?


aBenzene


bBenzoic acid


cPhenoxide


dCyclohexane


View Answer Benzene

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


aC2H2OH


bH2CO3


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]


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


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


d2 2 -dihydroxy butanoic acid



Which one of the following is termed as benzul alcohol ?


aC6H5OH


bC6H5CH(OH)2


cC6H5CH2OH


dC6H5COOH


View Answer C6H5CH2OH

Alkyl halides undergo a type of reaction_________________?


aNucleophilic substitution


bNucleophilic addition


cElimination


dBoth A and C


View Answer Both A and C

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