Question

Match the List-I with List-II.

List -I List -II
a) Phosgene p) Sodium silicate
b) Water glass q) A poisonous gas
c) Carbon monoxide r) Fire extinguisher
d) Carbon dioxide s) Carbonyl ligand

• A. a-q; b-p; c-s; d-r
• B. a-r; b-q; c-r; d -p,q
• C. a-s; b-p; c-q; d-r,
• D. a-r; b-s; c-q; d-p

Answer 1

Answer: (A)

a-q; b-p; c-s; d-r

Phosgene ($COC{l}_2$) is a poisonous gas that was used during the first world war.

Sodium silicate ($N{a}_{2}Si{O}_3$) is also called water glass.

Due to the presence of lone pair on the carbon atom, $CO$ acts as ligand.

$C{O}_2$ is does not support combustion so it is used in fire extinguisher.

so option A is correct.