ASSERTION : In the Friedel-Crafts acylation of benzene, the attacking electrophile is an acyl carbocation. REASON : The reaction of benzene with CH3CH2CH2Cl in presence of AlCl3 gives n-propylbenzene.
Correct!
Wrong!
ASSERTION : Vinylic halides are reactive towards nucleophilic substitution reactions. REASON : Reactivity is due to the polarity of carbon halogen bond.
Correct!
Wrong!
ASSERTION : Hydration of 3, 3-dimethyl-l-butene with acid gives 2,3-dimethyl-2-butanol. REASON : Hydration of alkenes with acids occur through carbanion formation.
Correct!
Wrong!
ASSERTION : Ketones do not react with monohydric alcohols but do so with dihydric alcohols to give cyclic ketals. REASON : Ketal formation is used to protect the carbonyl group in organic synthesis.
Correct!
Wrong!
ASSERTION : Formic acid is a reducing agent. REASON : Formic acid is used as preservative for fruits.
Correct!
Wrong!
ASSERTION : Oxidation of 1-nitro naphthalene gives o-nitro phthalic acid whereas 1-amino naphthalene on oxidation gives phthalic acid. REASON : An amino group attached to the benzene ring makes it resistant to oxidation whereas nitro group makes the benzene ring susceptible to oxidation.
Correct!
Wrong!
ASSERTION : Chemical substances which are used to check pregnancy in women are called antifertility drugs. REASON : Antifertility drugs are also called birth control drugs or oral contraceptives.
Correct!
Wrong!
ASSERTION : Orlon is used as synthetic fibres. REASON : The monomer of orlon is vinyl chloride.
Correct!
Wrong!
ASSERTION : Chloroform and benzene form a pair of miscible liquids and they are separated by fractional distillation. REASON : Boiling point of benzene is less than that of chloroform.
Correct!
Wrong!
ASSERTION : Amino acids mostly exist as dipolar ions. REASON : The dipolar structure of amino acids is known as zwitterion or internal salt.
Correct!
Wrong!
CHEMISTRY QUIZ - DAY 2
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