A pipe can fill a tank in 10 hours, while another pipe can empty it in 15 hours. If both pipes are opened simultaneously, in how many hours will the tank be full?
ATQ, Filling pipe's rate = 1/10 Emptying pipe's rate = 1/15 Net filling rate = 1/10 - 1/15 = 1/30 The tank will be full in 30 hours.
Which statement about carbon credits is incorrect?
The nucleus of an atom consists of-
Which is the third lightest halogen?
The chemical name of the Vitamin B6 is
The gas usually causing explosions in coal mines is-
Which of the following is NOT classified as a Noble gas?
The first nuclear reactor made in India is named:
Which of the following gas is used to fill balloons.
Which mineral is also known as 'plumbago'?
The combining power of an element is called its:
