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Element (x) + NaOH rarr "Gas" 'y' + "oth...

Element `(x) + NaOH rarr "Gas" 'y' + "other product(s)" …….(I)`
`"Gas" 'y' overset(hv)(rarr) "element" 'x' +"other product(s)" .....(II)`
Element 'x' obtained In `rxn (I) & (II)` are allotropes, then element 'x' is

A

Zinc

B

phosphorous

C

sulphur

D

chlorine

Text Solution

Verified by Experts

The correct Answer is:
B
Sulphur & chlorine do not give any gaseous product when react with NaOH.
Zn gives `H_(2)` on reaction with NaOH, `H_(2)` does not exist in allotropic form.
In First reaction x= white phosphorous
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