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A reddish brown element X can't displace...

A reddish brown element `X` can't displace a halogen from its silver halide `Y`. This halide is insoluble in water. The `X` belongs to a group whose salts are found in sea water. `X` and `Y` respectively are

A

`Br_2, AgCl`

B

`Na, AgCl`

C

`Br_2, AgF`

D

`Se, AgBr`

Text Solution

Verified by Experts

The correct Answer is:
A
`X` is a halogen since salts of halogens are always found in sea water. Further, since `X` has a reddish brown colour so it is `Br_2`. However `Br_2` can displace neither `Cl` nor `F` from their silver salts. Since `AgF` is soluble in water and `AgCl` is insoluble in water so `Y` is `AgCl`
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