Question

1.1. Give one word for the following:
1. Gas released during roasting of sulphide ores.
2. A substance used to remove excess of chlorine.
3. Property of sulphur dioxide due to which it is used for refining of sugar.
4. Sulphur dioxide turns acidified potassium dichromate
5. Zinc sulphide on reacting with hydrochloric acid releases .
gas.
6. A gas which turns lead acetate paper black.
7. Colour of precipitates obtained when cadmium chloride reacts with hydrogen sulphide.​

Answer 1

Explanation:

1. H2S.
2. Na
3. dehydrating property
4. bleaching property
5. H2S
6. CO2
7. white