Question

Assertion : `Zn(OH)_(2)` dissolve in an excess of an `NaOH` n solution as well as `NH_(4)OH` solution
Reasion : `Zn(OH)_(2)` forms the soluble zincate salt in these alkline
A. If both (A) and (B) are correct and (R ) is the correct explqanation of (A)
B. If both (A) and (B) are correct but (R ) is not the correct explqanation of (A)
C. If (A) is correct ,but (R ) is incorrect
D. If (A) is incorrect ,but (R ) is correct

Answer 1

Correct Answer - c
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))`