Chemistry Past Questions and Answers

Which of the following substances is not a homogenous mixture?

A given mass of gas occupies 2cm2 at 300K. At what temperature will its volume be doubled keeping its pressure constant?

Which of the following is a measure of average kinetic energy of the molecules of a substance?

An increase in temperature causes an increase in the pressure of gas in a fixed volume due to an increase in ____________

How many lone pairs of electrons are there on the centre atom of the H-O molecules