What is acid rain? Give the name of the gases responsible for the acid rain.

Water pollution is caused due to

Which of the following practices will not come under green chemistry?

Which of the following molecules react with haemoglobin of the blood to produce toxic effect?

Classical smog is a mixture of .....

Identify the reactions that occur in photochemical smog.
$(i)$ $CH_2=O + H_2 \longrightarrow CH_3OH$
$(ii)$ $NO_{2(g)} \xrightarrow{h \nu} NO_{(g)} + O_{(g)}$; $O_{(g)} + O_{2(g)} \longrightarrow O_{3(g)}$
$(iii)$ $CH_4 + 2O_3 \longrightarrow CH_2=O + 2H_2O$
$(iv)$ $NO_{(g)} + O_{3(g)} \longrightarrow NO_{2(g)} + O_{2(g)}$