Brown gas having an irritating odour.

Brown sugar is

Ferrous sulphate decomposes with the evolution of a gas having a characteristic odour of burning sulphur. Write the chemical reaction involved and identify the type of reaction.

Brown Hydra is

Some plants having pleasant odour and attractive colours for

Pb(NO_(3))_(2) on heating gives a brown gas which undergoes dimerization on cooling? Identify the gas.

A Colorless solid A liberates a brown gas B on acidification, a colorless alkaline gas (C) on treatment with NaOH and a colorless non-reactive gas D on heating. If heating of the solid is continued, it completely disappears. Which one of the following is correct?

A Colorless solid A liberates a brown gas B on acidification, a colorless alkaline gas (C) on treatment with NaOH and a colorless non-reactive gas D on heating. If heating of the solid is continued, it completely disappears. The compound A is

The plants with flowers having strong odour, abundant nectar and pollen grain show

During the practical in the lab when hydrogen sulphide gas having offensive odour is prepared for some test, we can smell the gas even 50 metres away. Explain phenomenon.

Brown algae have a characteristic pigment of