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Standard XII

Chemistry

Electrophilic Substitution Reactions of Haloarenes

Assertion :Co...

Question

Assertion :Conc. $H_{2} S O_{4}$ as a drying agent. Reason: HCl prepared from NaCl is dried by passing through conc.sulphuric acid.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$H C$ l prepared from $N a C l$ is dried by passing through conc. sulphuric acid. Phosphorous pentaoxide and quick lime could also be used.

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Similar questions

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Phenols give o-and p-nitrophenol on nitration with conc. $H N O_{3} a n d H_{2} S O_{4}$ mixture.
Reason (R) - OH group in phenol is o-,p-directing.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

.

Reason:

CaO

formed by decomposition of

{CaCO}_{3}

reacts with

{SiO}_{2}

to form slag.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

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Assertion :Conc.H2SO4 as a drying agent. Reason: HCl prepared from NaCl is dried by passing through conc.sulphuric acid.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionHCl prepared from NaCl is dried by passing through conc. sulphuric acid. Phosphorous pentaoxide and quick lime could also be used.

Assertion :Conc. $H_{2} S O_{4}$ as a drying agent. Reason: HCl prepared from NaCl is dried by passing through conc.sulphuric acid.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$H C$ l prepared from $N a C l$ is dried by passing through conc. sulphuric acid. Phosphorous pentaoxide and quick lime could also be used.