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Consider the following statements. l. Pe...

Consider the following statements.
l. Permanent hardness of water is removed by treatment with washing soda.
ll. Platinum and palladium can adsorb large volumes of hydrogen.
Ill. Washing soda reacts with soluble magnesium and calcium sulphate to form insoluble carbonates.
Choose the correct statement(s).

A

only Il & Ill

B

I, Il & Ill

C

only Ill

D

Only I & Il

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Assertion (A) Permanent hardness of water is removed by treatment with washing soda. Reson (R) Washing soda reacts with soluble magnesium and calcium sulphate to from insolube carbonates.

In the following quesitons a statement of Assertion (A) followed by a statement of reason (R ) is given. Choose the correct option out of the option given below each question. Assertion[A]: Permanent hardness of water is removed by treatment with washin soda. Reason[R]: Washing soda reacts with soluble magneisum and calcium sulphate to form insoluble carbonates.

Assertion: Permanent hardness of water can be removed by treatement with washing soda. Reason: Washing soda reacts with calcium and magnesium sulphates and chlorides to form insoluble carbonates.

Consider the following statements Hard water does not give lather with soap because hard water contains (1) calcium bicarbonate (2) magnesium bicarbonate (3) chlorides of calcium (4) sulphates of calcium and magnesium Which of these statements are correct ?

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