A pipe, working at full speed, can fill an empty cistern in 1 hour. However, during the first hour it worked at one-twelfth of its capacity, during the second hour at one-ninth of its capacity, during the third hour at one-sixth of its usual capacity and during the fifth hour it was only one -third as efficient as it was supposed to be. A second pipe also displayed similar performance, but if it worked at full speed would have filled the empty cistern in 2 hours. Together with a drain pipe that drained water out of the tank at a constant rate, the empty cistern could be filled in 5 hours, all the three pipes working concurrently. How many hours will it take the drain pipe to empty the filled cistern if no other pipe was functioning during the time?

Which of the following scientists had done some calculations for the fifth state of matter?

Consider the given statements to be true and decide which of the conclusions logically follows from the statements.

Statements :

There is an increase in the price of essential commodities due to a strike by the transporters.

Conclusions :

1. Government should buy their own vehicles to transport the essential goods

2. Government should negotiate with transporters to withdraw the strike

'Freedom Trail' is a 2.5 mile long passage that offers a rich insight into the American Revolution. In which US city would you find this famous and historic trail?

Select the odd figure out of the given figure series.

Energy possessed by an object by its position or configuration is called

1st January 2018 was a Monday. Which of the following years will also start on a Monday?

Which of the following is NOT a characteristic of dicotyledons plants?