State two experiences that make you think that air exerts pressure. ( Other than those given in the text).

Do you think that increasing or decreasing the pressure can change state of matter ?

Assertion: The pressure exerted by the vapour of a liquid at equilibrium at a given temperature is called its vapour pressure. Reason: If a nonvolatile solute is added to a solvent to give a solution, the vapour pressure of the solution is found to be greater than the vapour pressure of the pure solvent.

Richa felt that each time you subtract an integer from other integer, the value of the difference is less than the two numbers. Is Richa right? Give reasons for your answer.

The following questions consist of two statements, one labelled as 'Statement I' and the other 'Statement II'. You have to examine these two statements carefully and decide if the Statement I and the Statement II, are individually true and if so, whether the Statement II is the correct explanation for the given Statement I. Select your answer to these items using the codes given below and then select the correct option. Statement-1 : sin^(-1)(1/sqrt(e)) gt tan^(-1)(1/sqrt(pi)) Statement-2 : sin^(-1)x gt tan^(-1)y" for "x gt y, forallx, y in (0,1)

Here is a news strip, read it carefully and answer the following questions. Villagers oppose sand mining project Santhabommali (Srikakulam) : People of more than 20 villages in two mandals of Srikakulam have raised a banner of revolt against the proposed beach sand mining project by a private company and threatened to intensify their agitation if the government does not cancel the project. The sand mining is being taken up to extract rich minerals from the area. The villages are located around the forest belt were mining was initiated. Do you think the villagers are doing a right thing to agitate ? Why ?