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Q.

The IIIA group element that does not displace hydrogen from hydrochloric acid is

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a

B

b

Al

c

Both B and Al

d

Tl

answer is A.

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Detailed Solution

B is a non metal and do not replace the hydrogen from HCl.Where as Al and Tl are metals and they can replace the hydrogen from HCl.
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The IIIA group element that does not displace hydrogen from hydrochloric acid is