A greenish yellow gas reacts with an alkin metal hydroxide to form a halate which can be used in fireworks and saftey matches. The gas and the halate are

Options

A. `Br_(2),KBrO_(3)`
B. `CI_(2),KCIO_(3)`
C. `I_(2),NaIO_(3)`
D. `I_(2),KIO_(3)`

Answer

B

Explanation

The halte used in fireworks and safety matches in `KCIO_(3)`. Thus the gas is `CI_(2)`
`3CI_(2)+6KOH rarr KCIO_(3)+5KCI+3H_(2)O`
`CI_(2)` is greenish yellow gas.