Question

Assertion : `CrO_(3)` is an acid anhydride.
Reason: `CrO_(3)` is obtained as bright orange crystals by the reaction of `K_(2) Cr_(2) O_(7)` with cold concentrated `H_(2) SO_(4)`.
A. If both assetion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are ture but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer 1

Correct Answer - B
Assertion: Correct statement as it gives oxy acid `H_(2) Cr_(2) O_(7)`,
`2CrO_(3) + H_(2)O rarr H_(2) Cr_(2) O_(7)`,
Reason : Correct statement:
`K_(2) Cr_(2) O_(7) + 2H_(2) SO_(4)` (connected and cold) `rarr CrO_(3)`
(bright orange) `+ 2KHSO_(4) + H_(2)O`.