Choose the correct alternative from the following : - Assertion (A) : Inside the earth metals are present in molten state. Reason (R) : Earth absorbs the sun's rays.
Choose the correct alternative from the following : - Assertion (A) : When a body is dipped in a liquid fully or partially, there is a decrease in its weight. Reason (R) : The decrease in weight is due to the higher density of the displaced liquid.
In following number series, two terms have been put within brackets. Choose the appropriate option - 18 21 25 18 29 33 18What numbers should come next ?