The following materials are supplied to you: (i) Glass (ii) Ice pieces
Suggest an acitivity to show that water vapour present in air can be condensed on a cold surface .

A piece of ice floating in a vessel filled with water. As the ice piece melts, what happens to the water level if (a) (i) ice melts and (ii) ice piece contains an air bubble (b) ice piece contains (i) a lead piece and (ii) a cork piece.

You are provided with the following materials (i) Magnifying glass (ii) Mirror (iii) Stainless steel plate (iv) Glass tumbler Which of the above materials will you identify as transparent?

The moisture content of a gas is often expressed in terms of the dew point. The point is the temperature to which the gas must be cooled before the gas becomes saturated with water vapour. At this temperture, water or ice (depending on the temperature) will be deposited on a solid surface. Dew point of H_(2)O is -43^(@)C at which vapour pressure of ice formed is 0.07 mm . Assuming that the CaCl_(2) owes its desicationg properties to the formation of CaCl_(2).2H_(2)O , calculate : ( i ) K_(p) at that temperature of the reaction, ( ii ) DeltaG^(@) CaCl_(2(s))+2H_(2)O_((g))hArrCaCl_(2).2H_(2)O_((s)) .

To study the process of rusting, Bharti set up the following experiment. After a few days she concluded I. Iron nails of tube Y get rusted as both water and air are present in it. II. Iron nails of tube X do not get rusted as only dry air is present in it. III. Iron nails of tube Z do not get rusted as air does not come in contact with nails. Which of the results are correct?

Which of the following is (are) an endothermic process(es)? (i) Dilution of sulphuric acid (ii) Sublimation of dry ice (iii) Condensation of water vapours (iv) Evaporation of water

A beaker exactly full of water has an ice piece floating on it. As the cube melts what happens to the water level if (a) the cube contains an air bubble, (b) the cube contains (i) a lead piece and (ii) a cork piece.

Which of the following are not the liquid forms of water? (i) Snow (ii) Lake water (iii) River water (iv) Water vapour (v) Ice Choose the correct combination from the options below.