1.

Assertion : Zn(OH)_(2) dissolve in an excess of an NaOH n solutionas well as NH_(4)OH solution Reasion : Zn(OH)_(2) formsthe soluble zincate salt in these alkline

Answer»

If both (A) and (B) are correct and (R ) is the correct explqanation of (A)
If both (A) and (B) are correct but (R ) is not the correct explqanation of (A)
If (A) is correct ,but (R ) is INCORRECT
If (A) is incorrect ,but (R ) is correct

Solution :Correct Reason (R )
`ZN(OH)_(2)` form the insoluble zincate salt with alkline
`Zn(OH)_(2) + 2NaOH rarr UNDERSET("insoluble SODIUM zincate")(Na_(2)ZnO_(2))`


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