Write the steps you would use for making tea. Use the words solution, solvent, solute, dissolve, soluble, insoulble, filtrate and residue.

Name the polymer you will use to make disposable cups for hot tea or coffee.

The solvent used to prepare colloidal solution is called ------- medium

What would you observe when zinc is added to a solution of iron (II)sulphate?Write the chemical reation that takes place.

A solution of a substance 'X' is used for whitewashing. Write the reaction of the substance 'X' named with water.

Pragya tested the solubility of three different substances at different temperatures - and collected the data as given below (results are given in thefollowing table, as grams of substance dissolved in 100 grams of water to form a saturated solution). Pragya makes a saturated solution of potassium chloride in water at 353 K and leaves the solution to cool at room temperature. What would she observe as the solution cools? Explain.

A solution of a substance 'X' is used for whitewashing. Name the substance 'X' and write its formula.

Pragya tested the solubility of three different substances at different temperatures - and collected the data as given below (results are given in thefollowing table, as grams of substance dissolved in 100 grams of water to form a saturated solution). What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate to 50 grams of water at 313K?

Samples of four metals A,B,C and D were taken and added to the following solutions one by one.The results obtained have been tabulated as follows. Use the table above to answer the following questions about metals A,B,C and D. (i)Which is the most reactive metal? (ii)What would you observe if B is added to a solution of copper (II) sulpahate? (iii)Arrange the metals A,B,C and D in the order of decreasing reactivity.