IF hot summer Revathi gave lemonade to the guests who visited her home. The solute in that solution is / are
(i) Water (ii) Lemon juice (iii) Sugar (iv) Salt

A solution turns red litmus blue, its pH is likely to be (i) 1 (ii) 4 (iii) 5 (iv) 10

Separate the following into substances having pH values above and below 7. How do these influence litmus paper? (i) Lemon juice (ii) Solution of washing soda (iii) toothpaste (iv). Vinegar (v). Stomach juices.

A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains (i) NaCl (ii) HCl (iii) LiCl (iv) KCl

How is that the boiling points of the following solutions in water are different: (i) 0.1 M NaCl solution (ii) 0.1 M sugar solution?

How will you separate the constituents present in the following mixtures ? (i) Common salt and water (ii) Iodine and sand (iii) Kerosene and water (iv) Sugar and sulphur.

Which of the following are colloidal solutions ? (i) Aqueous solution of NaCl (ii) Milk (iii) Blood (iv) Starch solution (v) Sea water

(a) State the various characteristics of chemical reactions. (b) state one charactoristie each fo the chemical reaction which takes place when (i) dilute hydrochloride acid is added to sodium carbonate (ii) lemon juice is added gradually to potassium permanganate solution (iii) dilute sulphuric acid is added to barium chloride solution (iv) quicklime is treated with water (v) wax is burned in the form of a candle