Question

Assertion (A): \[HP{O_3}\] is a monobasic acid
Reason (R): The salts of \[HP{O_3}\]are called Meta phosphates
A.Both (A) and (R) are true and (R) is the correct explanation of (A)
B.Both (A) and (R) are true and (R) is not a correct explanation of (A)
C.(A) is true and (R) is false
D.(A) is false but (R) is true

Answer 1

Hint: We have to remember that the \[HP{O_3}\] is an organic compound and its chemical name is metaphosphoric acid. It is coming under the group of phosphoric acid and it dissolves slowly in cold water which decomposes into phosphoric acid. And it is also known as hydrogen phosphonate. And metaphosphoric acid is a monobasic acid which will stabilize the ascorbic acid.

Complete answer:
We must have to know that the metaphosphoric acid is a monobasic compound and the salts of \[HP{O_3}\] are called Meta phosphates. But the reason is not a correct explanation for the assertion. Hence, the option (A) is incorrect.
As we know that \[HP{O_3}\] is an organic compound and its chemical name is metaphosphoric acid. It is a monobasic compound. Because it contains only one hydrogen ion or one replaceable hydrogen atom per one molecule in water. The structure of \[HP{O_3}\]can be drawn as,

And the salts of \[HP{O_3}\] are called Meta phosphates. But this is not a correct explanation for the assertion.
Hence, the option (B) is correct.
In these statements, both assertion and reason are true. Hence, the option (C) is incorrect.
Here, both assertion and reason are correct. The reason is not a correct explanation for assertion. Hence, the option (D) is incorrect.

Note:
We must have to remember that the \[HP{O_3}\] is an organic compound and its chemical name is metaphosphoric acid which is mainly used to prepare ascorbic acid and to eliminate copper, which is also used to measure the amount of vitamin C. It is a monobasic compound. And the salts of \[HP{O_3}\] are called Meta phosphates. But the salts of metaphosphoric acid is not a reason for its acidic property.