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KEAM 2021 Physics and Chemistry Solved Paper
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© examsnet.com
Question : 112
Total: 120
Choose the wrong statement in the following with regard to orthoboric acid:
It can be prepared by the hydrolysis of boron trihalide
It is not a protonic acid but acts as a Lewis acid
It has a layer structure
It is freely soluble in cold water
On heating above
370
K
it forms first metaboric acid which on further heating yields
B
2
O
3
Validate
Solution:
Orthoboric acid is sparingly soluble in cold water but freely soluble in hot water.
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