Assertion: Silver iodide does not dissolve even in concentrated aqueous ammonia. Reason: Silver iodide is yellow in colour.

ABoth Assertion and Reason are true and the Reason is the correct explanation of the Assertion
BBoth Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
CAssertion is true but Reason is false
DAssertion is false but Reason is true

Answer: B

The assertion is true: the solubility product of

AgI

is so small that the

Ag X^{+}

released cannot be held by ammonia as

[Ag (NH X_{3}) X_{2}] X^{+}

. The reason is also true, but colour has nothing to do with solubility, so it does not explain the assertion.