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Standard XII

Chemistry

Uses of Alkaline Earth Metals

Assertion :In...

Question

Assertion :In fused state, calcium chloride cannot be used to dry alcohol or ${N H}_{3}$ Reason: $C a {C l}_{2}$ is not a good dessicant.

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 C Assertion is correct but Reason is incorrect
$C a C l_{2}$ forms addition products with alcohol and ammonia.( $C a C l_{2} .4 N H_{3} o r C a C l_{2} .4 C_{2} H_{2} O_{5}$ )

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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) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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

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.

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Assertion :In fused state, calcium chloride cannot be used to dry alcohol or NH3 Reason: CaCl2 is not a good dessicant.

The correct option is C Assertion is correct but Reason is incorrectCaCl2 forms addition products with alcohol and ammonia.(CaCl2.4NH3 or CaCl2.4C2H2O5)

Assertion :In fused state, calcium chloride cannot be used to dry alcohol or ${N H}_{3}$ Reason: $C a {C l}_{2}$ is not a good dessicant.

The correct option is C Assertion is correct but Reason is incorrect
$C a C l_{2}$ forms addition products with alcohol and ammonia.( $C a C l_{2} .4 N H_{3} o r C a C l_{2} .4 C_{2} H_{2} O_{5}$ )