Question

Complete the statements by filling the blanks with the correct word from the bracket. [5]
1. The crystal of [diamond/graphite) is opaque to light and is a good conductor of heat.
2. A graphite-clay mixture baked at high temperature is used in making
[lubricants/refractory crucibles]
3. Adsorption capacity of wood charcoal is increased by passing
(carbon dioxide/steam) over wood charcoal, at high temperatures.
[organic/inorganic Chemistry is the Chemistry of carbon compounds
mainly of 'Carbon', 'Hydrogen' & 'Oxygen'.
(sodium carbonate/
5. Sodium oxide combines with carbon dioxide to give
sodium bicarbonate).
[5]
4​

Answer 1

1. The crystal of diamond is opaque to light and is a good conductor of heat.

2. A graphite-clay mixture baked at high temperature is used in making refractory crucibles.

3. Adsorption capacity of wood charcoal is increased by passing steam over wood charcoal, at high temperatures.

4. Organic Chemistry is the Chemistry of carbon compounds mainly of 'Carbon', 'Hydrogen' & 'Oxygen'.

5. Sodium oxide combines with carbon dioxide to give sodium carbonate.