Question

11. ਹੇਠ ਲਿਖਿਆਂ ਵਿਚੋਂ ਕਿਹੜਾ ਪਦਾਰਥ ਕੋਲਤਾਰ ਤੋਂ ਪ੍ਰਾਪਤ ਕੀਤਾ ਜਾਂਦਾ ਹੈ?Which of the
following is obtained from coal tar?"
(​

Answer 1

Answer:

Explanation:

Naphthalene balls used to repel moth and other insects are also obtained from coal tar. Note: These days bitumen a petroleum product is used in place of coal tar for metalling the roads.