Two identically sized rooms A and B are connected by an open door. If the room A is air conditioned such that its temperature is `4^(@)` lesser than room B, which room has more air in it?

Two identical rooms in a perfectly insulated house are connected by an open doorway. The temperature in the two rooms are maintained at different values. The room which contains more air molecules is :

Two identical rooms in a perfectly insulated house are connected by an open doorway. The temperature in the two rooms are maintained at different values. The room which contains more air molecules is :

Which is solid at room temperature

Which of these are liquids at room temperature ?

Which of these are liquids at room temperature