A 50 cc water sample passed through an empty dry filter paper whose initial weight is 1.46 g. After oven drying, the final weight of the filter paper with residue is 1.42 g. What is the concentration of suspended solids in mg/L? (Note: Taking the absolute weight difference)

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?