Exams

Rickets is caused due to the deficiency of

Pipes A, B and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hrs, respectively, the third can drain the cistern, when filled, in 6 hrs. If all the three pipes are opened simultaneously when the cistern is half-full, how many hours will be needed to fill the cistern?

An object having a mass 'm' moving with a velocity 'v' possesses a kinetic energy 'K'. If its velocity is doubled, its kinetic energy will become:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

Senseless talk or writing

If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure?

A box is termed as eraser, an eraser is termed as pen, a pen is termed as stick, and a stick is termed as plant. Then in the exam a student will write with ___.

Nitin ranks 23rd from the top in a class of 42. What will be his rank from the last?

The hardest natural substance is