Q4 of 44 Page 12

Tincture of iodine has antiseptic properties. This solution is made by dissolving

Tincture of iodine solution is made by dissolving iodine in alcohol. It contains around 2–7% iodine dissolved in a mixture of ethanol and water.

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2

Rusting of an article made up of iron is called

 3

A mixture of sulphur and carbon disulphide is

 5

Which of the following are homogeneous in nature?

(i) ice


(ii) wood


(iii) soil


(iv) air

 6

Which of the following are physical changes?

(i) Melting of iron metal


(ii) Rusting of iron


(iii) Bending of an iron rod


(iv) Drawing a wire of iron metal