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Q.

Naphthalene balls are obtained from


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a

Coke

b

Coal tar

c

Paraffin wax

d

Bitumen 

answer is B.

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Detailed Solution

Naphthalene balls are obtained from coal tar.
Naphthalene balls are obtained from coal tar. Coal tar is a product of coal obtained from dead plants' carbonisation. Besides, coal tar is also used in dyes, drugs, explosives, and perfume industries. Naphthalene balls protect clothes from moths and several other fibre insects.
 
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Naphthalene balls are obtained from