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Assertion (A): In rainy season, common s...

Assertion (A): In rainy season, common salt becomes damp after sometime on keeping.
Reason (R ): Common salt (NaCI) is hygroscopic in nature.

A

If both assertion and reason are true, and reason is the true explanation of the assertion.

B

If both assertion and reason are true, but reason is not the true explanation of the assertion.

C

If assertion is true, but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
c
Correct reason . Common salt contains impurities of `MgCl_(2) , CaCl_(2) , MgSO_(4) , CaSO_(4) ,`etc. which are hygroscopic .
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Knowledge Check

  • Assertion (A): When common salt is kept open, it absorbs moisture from the air. Reason (R ): Common salt contains magnesium chloride.

    A
    Both A and R are true and R is the correct explanation of A.
    B
    Both A and R are true but R is NOT the correct explanation of A.
    C
    A is true but R is false.
    D
    A is false and R is True.

  • Crude common salt is hygroscopic because of impurities of

    A
    `CaSO_(4)` and `MgSO_(4)`
    B
    `CaCl_(2)` and `MgCl_(2)`
    C
    `CaBr_(2)` and `MgBr_(2)`
    D
    `Ca(HCO_(3))_(2)` and `Mg(HCO_(3))_(2)`.

  • Commercial common salt becomes slightly damp on keeping. This is due to the fact that-

    A
    Common salt is hygroscopic
    B
    Common salt contains some impurity which is hygroscopic
    C
    Salt is efflorescent
    D
    Salt is crystalline

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