The known forces of nature can be divided into four classes, viz, gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them which one of the following statements is not correct?

Which one among the following statements is not correct?

Consider the following statements: Statement I: In the context of effect of water on rocks, chalk is known as a very permeable rock whereas clay is known as quite an impermeable or least permeable ro…

If the gravitational force of the earth suddenly disappears, which are of the following will be the correct consequence?

Which one of the following statements is true ?

Consider the following statements: I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth's surface. II. Heat absorbed and trapped by the atmosphere maintai…