What are the units of “b” in van der Waals equation?

A gas can be liquefied only through an increase in compression.

Higher the viscosity, the slower the liquid flows.

Which among the following options do you think has the highest average speed?

By observing the below-given figure which of the options do you think is the correct one?

Gases mix properly without any mechanical aid.

Which of the following do you think is a correct relationship between the molar mass of gas temperature and its pressure…

How many moles of oxygen are present in 64 grams of oxygen?