Which one of the following methods is used to prepare Me₃COEt with a good yield
Options
(a) Mixing EtONa with Me₃CCl (b) Mixing Me₃CONa with EtCl (c) Heating a mixture of (1:1) EtOH […]
SN2 mechanism proceeds through intervention of
Options
(a) carbonium ion (b) transition state (c) free radical (d) carbanion
Correct Answer:
transition state
Explanation:
S(N)2 mechanism proceeds through transition state. e.g. When the methyl chloride […]
In the reaction of phenol with CHCl₃ and aq.KOH the electrophile attacking the ring is
Options
(a) CHCl₃ (b) CHCl₂ (c) :CCl₂ (d) COCl₂
Correct Answer:
:CCl₂
Explanation:
The electrophile is dichloromethylene :CCl₂ […]
AgNO₃ does not give precipitate with CHCl₃ because
Options
(a) CHCl₃ does not ionise in water (b) AgNO₃ does not reacts with (c) CHCl₃ is chemicaly inert (d) none of these
Correct Answer:
CHCl₃ […]
Which of the following possesses highest melting point
Options
(a) Chlorobenzene (b) m-Dichlorobenzene (c) o-Dichlorobenzene (d) p-Dichlorobenzene
Correct Answer:
p-Dichlorobenzene
Explanation:
No explanation available. Be the first to write the explanation for this […]
When acetone reacts with bleaching powder, the compound formed is
Options
(a) CCl₄ (b) CHCl₃ (c) CH₃CHO (d) CH₃COOH
Correct Answer:
CHCl₃
Explanation:
It involves two steps: CaOCl₂(Bleaching powder) + H₂O → Ca(OH)₂ […]
When chloroform is exposed to light and air, it forms
Options
(a) chlorine gas (b) methyl chloride (c) phosgene gas (d) carbon tetrachloride
Correct Answer:
phosgene gas
Explanation:
No explanation available. Be […]
Carbylamine test is performed in alcoholic KOH by heating a mixture of
Options
(a) chloroform and silver powder (b) an alkyl cyanide and a primary amine (c) an alkyl halide and a primary […]
Which of the following is a primary halide
Options
(a) iso-propyliodide (b) sec-butyliodide (c) ter-butylbromide (d) neo-hexylchloride
Correct Answer:
neo-hexylchloride
Explanation:
No explanation available. Be the first to write the explanation […]
In the dichlorination reaction of propane, mixture of products are obtained. How many isomers, the mixture contains
Options
(a) 2 (b) 3 (c) 4 (d) 5
Correct Answer:
4
Explanation:
No explanation available. […]
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