You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Formation of Complexes

Assertion :St...

Question

Assertion :Statement -I: $N a C l$ when exposed in air it becomes wet.
Reason: Statement -II: $N a C l$ contains hygroscopic impurities like ${C a C l}_{2}$ , ${M g C l}_{2}$ etc.

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

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

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

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both Assertion and Reason are incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Magnesium chloride and calcium chloride are the common impurities present in table salt. It is highly hygroscopic and absorbs moisture from the air.

Because of the presence of $M g C l_{2}$ and $C a C l_{2}$ in sodium chloride(common/table salt), it becomes wet.

This type of wetting is generally observed in the samples of table salt obtained from seawater directly because magnesium chloride also occurs in seawater.

So both Assertion and Reason are correct but Reason is the correct explanation for Assertion.

Hence option A is correct.

Suggest Corrections

Similar questions

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 (A) Boiling points of alcohols and ethers are high.
Reason (R) They can form intermolecular hydrogen-bonding.
(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 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) Like bromination of benzene, bromination of phenol is also carried out in the presence of Lewis acid.
Reason (R) Lewis acid polarises the bromine molecule.
(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.

Join BYJU'S Learning Program

Assertion :Statement -I: NaCl when exposed in air it becomes wet. Reason: Statement -II: NaCl contains hygroscopic impurities like CaCl2, MgCl2 etc.

Assertion :Statement -I: $N a C l$ when exposed in air it becomes wet.
Reason: Statement -II: $N a C l$ contains hygroscopic impurities like ${C a C l}_{2}$ , ${M g C l}_{2}$ etc.