You will need at least five of your 20kt fission bombs to even destroy a large city.
Check the detonation radius of a 20kt fission bomb, and then check the radius of any medium or large city in the world. The difference is massive.
Like I said, one single Chinese nuke is 3-4 megatons, more than the entire Indian arsenal combined.
Brother Dragon, something you are forgetting,
India has Thermonuclear bomb too.... and do you know the minimum yield of it.....we do have plenty of 25 Megaton fission bombs at least 50 of them as per Chinese Intelligence....
Do you know the detonation Radius even if the yield is more than 10 Megaton and detonation 50 meters above land...even you soft bone will evaporate
25 Megaton Air Blast: Pressure Damage
Radius of destructive circle: 6.5 miles
12 pounds per square inch
The remains of some buildings foundations are visible. Some of the strongest buildings those made of reinforced, poured concrete are still standing. Ninety-eight percent of the population within this area are dead.
Radius: 10.7 miles
5 psi
Virtually everything is destroyed between the 12 and 5 psi rings. The walls of typical multi-story buildings, including apartment buildings, are completely blown out. As you move from the center toward the 5 psi ring there are more structural skeletons of buildings standing. Single-family residences within this this area have been completely blown away only their foundations remain. Fifty percent of the population between the 12 and 5 psi rings are dead. Forty percent are injured.
Radius: 20 miles
2 psi
Any single-family residences that are not completely destroyed are heavily damaged. The windows of office buildings have been blown away, as have some of their walls. The contents of these buildings upper floors, including the people who were working there, are scattered on the street. A substantial amount of debris clutters the entire area. Five percent of the population between the 5 and 2 psi rings are dead. Forty-five percent are injured.
Radius: 30.4 miles
1 psi
Residences are moderately damaged. Commercial buildings have sustained minimal damage. Twenty-five percent of the population between the 2 and 1 psi rings are injured, mainly by flying glass and debris. Many others have been injured from thermal radiation the heat generated by the blast. The remaining seventy-five percent are unhurt.