A gas reacts with `CaO`, but not with `NaHCO_(3)`. The gas is

A gas reacts with CaO and not with NaHCO_3 is:

Benzenesulphonic acid and para nitrophenol react with NaHCO_(3) separately. The gases produced are respectively.

Benzenesulphonic acid and para nitrophenol react with NaHCO_(3) separately. The gases produced are respectively.

When acetic acid reacts with calcium , a gas is evolved . The gas is :

CaO reacts with water to form……….

Phenol does not react with NaHCO_(3) because

CaO does not react with