Assertion :Baryta water becomes turbid on passing $C O_{2}$ gas through it but turbidity becomes clear on passing more $C O_{2}$ gas. Reason: Carbonates give white precipitate with silver nitrate solution. The precipitate becomes yellow or brown if the mixture is boiled.

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 incorrect but Reason is correct.

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Both Assertion and Reason are correct.

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
Baryta water (aqueous solution of barium hydroxide) reacts with carbon dioxide to give white precipitate of barium carbonate, thus the solution looks turbid but when excess of carbon dioxide is passed then carbonate ions turns into bicarbonate ions.

$B a (O H)_{2} + C O_{2} \to B a C O_{3} ↓ (white ppt.)$

$B a C O_{3} + H_{2} O + C O_{2} \to B a (H C O_{3})_{2}$

Carbonates when reacts with silver nitrate forms white precipitate of silver carbonates. If the solution of formed precipitate is boiled it gets converted into yellow coloured silver oxide.

$C O_{3}^{2 -} + A g^{+} \to A g_{2} C O_{3} ↓ (white ppt.)$

$A g_{2} C O_{3} boiled \to A g_{2} O_{3} ↓ (yellow/brown ppt.) + C O_{2} ↑$
The reason doesn't explain the assertion. However, both assertion and reason are correct. Hence, option B is correct.

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but becomes clear on passing more

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(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.