Chemistry
Answer
(a) The process of slow conversion of vegetable matter into carbon-rich substances is called carbonization.
(b) Adsorption is the property due to which a substance absorbs gases, liquids and solids only on its surface.
(c) When a substance is heated in the absence of air, the process is called destructive distillation. It results in the decomposition of the substance into its constituent substances.
Related Questions
Match the following:
Column A Column B (a) Ivory black (i) Artificial diamond (b) Lamp black (ii) Electrodes (c) Gas carbon (iii) Lubricant (d) Sugar charcoal (iv) Shoe polish (e) Graphite (v) Black pigment Name the following:
(a) Substances whose atoms or molecules are not arranged in a geometrical pattern.
(b) The best variety of coal.
(c) The purest form of amorphous carbon.
(d) An amorphous form of carbon that that burns without smoke.
(e) Mixture of carbon monoxide and hydrogen.
Why is wood charcoal used in water filters and gas masks?
Name the products formed when:
(a) wood is burnt in the absence of air.
(b) bone is heated in the absence of air.
(c) diamond is burnt in air at 900°C.
(d) graphite is subjected to high pressure and 3000°C temperature.