Q4 of 65 Page 88

Name the product of coal which is thick black liquid having an unpleasant smell.

Coal tar is the product of coal which is a thick black liquid having an unpleasant smell. It is a mixture of about 200 substances.


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2

Which product of coal is used as a reducing agent in the extraction of metals?

 3

Name the process by which plant material (or vegetation) buried deep under

the earth was slowly converted into coal.

 5

Name any five substances used in everyday life which are manufactured starting from the products of coal tar.

 6

Name an important source from which naphthalene balls are obtained.