Gas A is formed on the hydrolysis of calcium cyanamide. The gas can turn moist litmus paper blue and forms a brown precipitate with Nessler's reagent. The gas, A is

Name the gas that turns moist red litmus blue.

The gas which turns mercurous nitrate paper black is

Name the gas that turns moist starch iodide paper blue black.

Name the gas that turns moist starch iodide paper blue black.

War gas is formed from:

A gas which turns lead acetate paper black.

Salt (A) on heating gives a colourless neutral gas which supports combustion. From the aforesaid, flow diagram, answer the following questions. The basic radical of salt (A) and gas B both gives brown precipitate with Nessler's reagent.The composition of the brown precipitate is:

A colourless gas X forms a brown coloured gas when mixed with air. The gas X is

From the gases - ammonia , chlorine , hydrogen chloride , sulphur dioxide , select the gas that turns moist red litmus paper blue . Write the equation for the reaction - when the gas is passed over heated CuO .

Select from the list the gas that matches the description given in each case: [ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne] This gas produces reddish brown preciptate with nesslers reagent