Chemistry
Write True or False against the following statements.
(a) Lamp black is used in making shoe polish.
(b) Coke is obtained by destructive distillation of sugar.
(c) Activated charcoal is a good conductor of electricity.
(d) Wood charcoal is an important constituent of gun powder.
(e) Coal gas is used in the preparation of artificial fertilizers.
Answer
(a) True
(b) False
Correct statement— Coke is obtained by destructive distillation of coal.
(c) False
Correct statement — Activated charcoal is a bad conductor of electricity.
(d) True
(e) False
Correct statement — Ammoniacal solution is used in the preparation of artificial fertilizers.
Related Questions
The purest form of the amorphous carbon is
- wood charcoal
- sugar charcoal
- bone charcoal
- lamp black
Fill in the blanks:
(a) …………… is formed when charcoal is burnt in a limited supply of air.
(b) Coal is a …………… form of carbon.
(c) …………… is the most inferior form of coal.
(d) Wood charcoal is a …………… conductor of heat and electricity.
(e) …………… is used in making black shoe polish.
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.