Question

Choose the correct statement(s) from the following.

• A. Heating substances in the excess of air is called destructive distillation.
• B. Lampblack consists of extremely small crystals of graphite.
• C. Actual density of wood charcoal is less than that of water.
• D. Charcoal is prepared by the destructive distillation of coal.

Answer 1

The correct option is B Lampblack consists of extremely small crystals of graphite.

• Heating substances in the absence of air is called destructive distillation.
• Lampblack consists of extremely small crystals of graphite.
• Wood charcoal is porous and so, the actual density of wood charcoal is greater than that of water.
• Charcoal is prepared by the destructive distillation of wood.