# Please answer Q20 and tell why the other options are incorrect.

Dear Student,
Option A is correct.
AgNO3(aq) + NaCl(aq) $\underset{}{\to }$ AgCl(s) + NaNO3(aq)
As a result of double displacement, AgCl(s) is formed as a precipitate whereas NaNO3​​​​ remains dissolved in an aqueous solution.
Upon filtering the precipitate is left on filter paper and the filtrate is left with NaNO3.
The crystallization method is suitable when we have a saturated solution of salt. Since AgCl is a precipitate, the crystallization technique is unsuitable.
Finally, Ag being a less active metal does not react with dilute acid to form AgCl.

Regards
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• 1
Option A is correct
Because it is double displacement reaction
• 1
Option A is correct
Because it is double displacement reaction
• 0
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