history: Which famous Indian is buried at Gravesend in Kent?

Questions

harappa & mohenjodaro were 2 great cities in the?

he was the german nobel prize winner of 1918, inventor of the method of ammonia processing, and attempted to extract gold from sea water?

heaviest substance known?

hela cells, immortal cancer cells, came from this woman?

helioseismology is the study of the interior of?