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Standard XII
Chemistry
Question

Assertion: Dehydration of alcohols can be carried out with conc. H2SO4 but not with conc. HCl.
Reason: H2SO4 is dibasic while HCl is monobasic.
  1. Both Assertion and Reason are true and Reason is the correct explanation to Assertion
  2. Both Assertion and Reason are true and Reason is not the correct explanation to Assertion
  3. Assertion is true but Reason is false
  4. Assertion is false but Reason is true

A
Assertion is true but Reason is false
B
Both Assertion and Reason are true and Reason is not the correct explanation to Assertion
C
Assertion is false but Reason is true
D
Both Assertion and Reason are true and Reason is the correct explanation to Assertion
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Solution
Verified by Toppr

Dehydration of alcohols can be carried out with conc. H2SO4 as it is a dehydrating agent and removes a molecule of water from alcohols resulting in the formation of alkenes at higher temperatures. Conc. HCl is not a dehydrating agent.
H2SO4 is indeed a dibasic acid and HCl is not. But it is not the reason that HCl is not a dehydrating agent.

So, both assertion and reason are true but the reason is not the correct explanation to assertion.
The correct option is 'B'.

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