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Question

A compound A of boron reacts with NMe3 to give an adduct B which on hydrolysis gives a compound C and a gas D. Compound C is an acid.

Compound C is :

A
diborane
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B
boric acid
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C
borate salt
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D
none of these
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Solution

The correct option is B boric acid
B2H6+2NMe32BH3.NMe3
Diborane (A) Adduct (B)

BH3.NMe3+3H2OH3BO3+NMe3+3H2
Boric acid
(C) (D) gas

Compound "C" is boric acid H3BO3

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