Statement-I: Aluminium and zinc metal evolve `H_(2)` gas from NaOH solution
Statement-II: Several non-metals such as P,S,Cl, etc. yield a hydride instead of `H_(2)` gas from NaOH

Options

A. If both (A) and (R) are true and (R) is the correct explanation of (A)
B. if both (A) and (R) are true but (R) is not correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is false

Answer

B, C

Explanation

`2Al+2NaoH+2H_(2)O to 2NaAlO_(2)+3H_(2)uarr`
`Zn+2NaOH to underset("sod. Zincate")(Na_(2)ZnO_(2))+H_(2)uarr`
`4S+6NaOH to 2Na_(2)S+Na_(2)S_(2)O_(3)+3H_(2)O`
`P_(4)+3NaOH +3H_(2)O to underset("sod. Hypophoshpite")(3NaH_(2)PO_(2))+PH_(3)uarr`
`Cl_(2)+2NaOH to NaClO+H_(2)O`