Ncert Solutions Chemistry Class 12th
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New answer posted
9 months agoContributor-Level 10
This is a long answer type question as classified in NCERT Exemplar
The structure of the alkyl halide as well as the chemicals used in the reaction dictate whether it undergoes substitution or elimination. The reactivity of alkyl halides to substitution processes can be examined to better understand their structural characteristics. The SN2 mechanism, which involves cleavage of the halide from the carbon atom and simultaneous attachment of the attacking nucleophile, is preferred by primary alkyl halides for substitution reactions.
Tertiary halides, on the other hand, go through an elimination process due to the production of stable carbo
New answer posted
9 months agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(iv) Assertion is a wrong statement but reason is correct.
Explanation: Phenol on treatment with dil. HNO3 form o-nitrophenol and p-nitrophenol.
New answer posted
9 months agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(ii) Assertion and reason both are wrong statements.
Explanation: Correct assertion: Phenol on treatment with bromine water can form 2,4,6- tribromophenol
Correct reason: In water, phenol gives phenoxide ions which activate the ring towards electrophilic substitution reaction.
New answer posted
9 months agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(iii) Assertion is a correct statement but reason is wrong.
Explanation: Phenoxide ion is stabilized by resonance which is not possible in alkoxide ion.
New answer posted
9 months agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(v) Both assertion and reason are correct statements but reason is not correct explanation of assertion.
Explanation: Due to intramolecular hydrogen bonding o-Nitrophenol does not form hydrogen bond with water
New answer posted
9 months agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(iv) Assertion is a wrong statement but reason is correct.
Explanation: Bromination of phenol cannot be carried out in presence of Lewis acid.
New answer posted
9 months agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(ii) Assertion and reason both are wrong statements.
Explanation: Correct assertion: Boiling points of alcohol are higher than that of ethers of comparable molecular mass.
Correct reason: Alcohols can form intermolecular hydrogen bonding while ethers cannot.
New answer posted
9 months agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(iv) Assertion is a wrong statement but reason is correct.
Explanation: 141 pm
New answer posted
9 months agoContributor-Level 10
This is a assertion and reason answer type question as classified in NCERT Exemplar
(iv) Assertion is a wrong statement but reason is correct.
Explanation: Correct assertion is the IUPAC name of the compound is 1- (2-propoxy) propane.
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