Haloalkane in the presence of alcoholic KOH undergoes
elimination
polymerisation
dimerisation
substitution
Purine derivative among the following bases is
cytosine
guanine
uracil
thymine
B.
guanine
The purines which constitute fragment of nucleic acids are adenine and guanine.
A drug that is antipyretic as well as analgesic is
penicillin
chloroquin
para-acetamidophenol
chloropromazine hydrochloride
In a reversible reaction a catalyst will affect
the rate of forward reaction and reverse reaction
neither the forward reaction nor the rate ofreverse reaction
the rate of forward reaction
the rate of reverse reaction
Grignard reagent is not prepared in aqueous medium but prepared in ether medium. Because
the reagent reacts with water
the reagent becomes inactive in water
it is insoluble in water
the reagent is highly reactive in water