11.6 Carboxylic Acid — Chemistry STD 10 — Question

Concentrated nitric acid oxidises phosphorus to :

The metals zinc and tin are present in the alloy

While preparing ammonia gas in the laboratory, from magnesium nitride, the precaution(s) is/are :

Amphoteric oxides and hydroxides react with an __________ to give salt and water only.

A solution turns pH paper blue. The pH paper is kept within the solution and another solution X is added drop by drop. It is found that pH paper turns green. The nature of solution X is:

The molecular formula of chloroform is:

Assertion (A): The liquid ammonia is used as a refrigerant.
Reason (R): Liquid ammonia easily liquifies under pressure, highly volatile and has a high specific latent heat of vapourisation.

The correct reaction between caustic soda solution and aluminium oxide is.