The Pakistani nuclear bombs tested in 1998 had yields ranging from 5 kt to 12 kt.
According to an old intelligence report, Pakistan is capable of developing nuclear weapon (with yield of up to 20 kt) with Plutonium and nuclear weapon (with yield of up to 16 kt) with Uranium. Highest estimate yet given is 50 kt.
In contrast, Indian scientists claim that they can build nuclear weapons with yield of up to 200 kt at maximum.
The most powerful nuclear bomb tested by India (till date) was officially reported to have yield of 43 kt. However, international sources disputed this claim and put the figure at 20 - 25 kt.