Question

Which of the following is/are inorganic gas (es)?
(a) Carbon Monoxide
(b) Hydrogen Sulphide
(c) Chlorine
(d) All of the above.

Answer 1

First we have to know what inorganic and organic gases means. How we differentiate them that this is inorganic and another one is not and also the formulas of the gases, compounds or the molecules.

Complete answer:
Let’s start with the definitions of the organic and inorganic gases.
Organic gases: The gases having carbon and hydrogen as their constituents are called Organic gases.
Inorganic Gases: The gases don't have carbon and hydrogen as their constituents are called inorganic gases.
So, now going through the options:
In the first option, there is carbon monoxide, which chemical formula is $C{O_2}$ . Carbon monoxide has carbon but hydrogen is not present. Hence, carbon monoxide is an inorganic gas.
In the second option, there is hydrogen sulphide, which chemical formula is ${H_2}S$ . Hydrogen sulphide has hydrogen but carbon is not present. Hence, hydrogen sulphide is an inorganic gas.
In the third option, there is chlorine, which chemical formula is $C{l_2}$ . Chlorine has neither carbon nor hydrogen is present. Hence, chlorine is an inorganic gas.
The last option is that all the above options are right, i.e, carbon monoxide, hydrogen sulphide and chlorine all the three are inorganic gases, which is correct.

Hence, the correct option in this is (d) All of the above.

Note:
While doing these types of questions, the structure of molecules should be known to us and if there is only one atom is present, i.e, carbon is only present in the compound or only hydrogen is present in that case also the molecule is organic. It will be inorganic. For any molecule to be organic, it is necessary to have at-least one carbon and hydrogen atom of both and if it contains carbon, hydrogen and also some other atom then the molecule will be organic.