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Question

On addition of AgNO3 to four different test tubes containing different solutions, one of them gave a white precipitate. It may contain:

A
CHCl3
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B
CaCl2
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C
KNO3
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D
CCl4
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Solution

The correct option is B CaCl2
When silver nitrate is added to a test tube containing calcium chloride, a white precipitate of silver chloride is obtained.
2AgNO3+CaCl22AgClwhiteprecipitate+Ca(NO3)2
Hence, the test tube may contain CaCl2.

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