
Write the correct order of rate of reaction of following with PhN$_2$Cl 
K$_{sp}$ of AgBr = 4y Then, the ratio of molarity (solubility) of (1) to (2) is:

Which one of the following is the correct PV vs P plot at constant temperature for an ideal gas ? (P and V stand for pressure and volume of the gas respectively) 
There is a parallel plate capacitor of capacitance $C$. If half of the space is filled with dielectric of dielectric constant $k = 5$ as in the figure. Find percentage increase in capacitance.
The matter is made up of very tiny particles and these particles are so small that we cannot see them with naked eyes.
The three states of matter are as follows: