1.

The empty Two pipes can separately fill a cistern in 20 min and 30 min respectively. When thewaste pipe is open, the two pipes can together fill the cistern in 1 h. Find the timetaken by the waste pipe to empty a full cistern.​

Answer»

Chapter - Atoms and MOLECULESQUESTION :-Write down the FORMULA with PROPER EQUATION :- ☆ Magnesium Hydroxide



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