Find the wrong number in given number series.

When acid reacts with metal carbonate, _______ is/are formed.

Aluminium is extracted from which ore?

Match the following gases with their typical uses:

List I (Gas)                               List II (Uses)

Malathion is primarily used as a/an:

Litmus paper, used to test pH levels, is derived from which organism?

Which gas is primarily monitored to assess organic pollution in sewage and surface water?

Common name of Sodium Carbonate is?

What is the chemical name of quick lime?

Atomic number of an element is equal to the number of ____ in the nucleus.

Photochemical smog is a resultant of the reaction among