Chemistry Past Questions and Answers

The volume occupies by 1.58g of a gas at s.t.p is 500cm<sup style='font-size: smaller;'>3</sup>. What is the relative molecular mass of the gas? <br/>(G.M.V at s.t.p = 22.40dm<sup style='font-size: smaller;'>3</sup>)

Equal volumes of CO,SO<sub style='font-size: smaller;'>2</sub>, and H<sub style='font-size: smaller;'>2</sub>S were released into a room at the same point and time. Which of the following gives the order of diffusion of the gases to the opposite corner of the room?<br/>(S = 32, C = 12, O = 16, N = 14, H = 1)

A basic postulate of the kinetic theory of gases is that the molecules of a gas move in straight lines between collisions. This implies that?

.....................P....Q.....R......S<br/>Proton..............13....16....17.....19<br/>Electron............13....16....17.....19<br/>Neutron.............14....16....35.....20<br/>Which of the four atoms P,q,R and in S in the above data can be described by the following properties relative atomic mass is greater than 30 but less than 40; it has an odd atomic number and forms a unipositive ion in solution?

Which of the following terms indicates the number of bonds that can be formed by an atom?