Which is correctly categorised ?

Which one of the following paris of chemical substances, is correctly categorised ?

Which one of the following paris of chemical substances, is correctly categorised ?

Which one of the following sets of items in the options (1-4) are correctly categorised with just one correctly mentioned exception in it?

The given box shows some rabi and kharif crops. Identify these crops and select the option that correctly categorises them.

Which of the following options give the correct categorisation ?

which of the following set of organisms is wrongly categorised as osmoconformers and osmoregulators