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Let the capacity of the tank be 150 units. Efficiency of pipes (M+N) = 150/25 = 6 units/hour Efficiency of pipe N = 150/30 = 5 unit/hour Therefore, efficiency of pipe M = 6 – 5 = 1 unit/hour New efficiency of pipe M = 2.5 units/hour Required time taken = 150/2.5 = 60 hours
Which gas is responsible for the ozone layer's depletion?
Which of the following pairs of vector and disease is/are correctly matched?
Vector Disease
Ohm’s law obeyed in -
A day is considered a rainy day when it receives a rainfall of:
Consider the reaction-
Copper sulphate solution (blue) + Iron → Iron sulphate soluton + Copper What is the colour of the iron sulphate solution?
Which among the following is necessarily present in an alloy for it to be referred as ‘Amalgam’?
Which device is used to measure atmospheric pressure?
The Aedes Aegypti mosquito can NOT act as a vector for -
Which of the following gases is also known as a 'Stranger' gas?
What is the atomic mass of carbon?