Why was the term inert gases dropped? why was the term inert gases dropped? the term "inert" was dropped because hydrogen was addviced to be included to "inert" gases. the term "inert" was dropped because it no longer described all the group 8a elements. the term "inert" was dropped because some organic gases such as methane were named "inert", too, and confusion happened. the term "inert" was dropped because author's rights for the term ended and scientists obtained possibility to change it.

B) The term "inert" was dropped because it no longer described all the group 8A elements.

Explanation:

Inert elements in chemistry simply refers to elements that are chemically inactive and are not expected to form any compounds. this is the general belief for the group 8 elements as they all have complete duplet/octet configurations (and ideally, they ought to be very stable with no tendency to form compounds by participating in the loss and gain of electrons). However the discovery of compounds like xenon tetrafluoride (XeF4) proved this to be wrong.

Again, the reason the term - inert gses was droppedis beacause this term is not strictly accurate because several of them do take part in chemical reactions.

After dropping the term - Inert gases, they are now referred to as noble gases.

it can be icreased by increasing pressure.

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)