Naphthalene balls are obtained from (a)petroleum (b)paraffin wax (c)coal tar (d)coastal gas
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ITS OBTAINED FROM COAL TAR...
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Naphthalene balls are obtained from coal tar. The balls are primarily used to keep away insects and moths from clothes.
The balls although useful in this case can also be quite harmful if not used with precaution.
They are supposed to be kept away from children, and even adults are advised not to the breath in its fumes for a prolonged period of time.
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