Pick out the wrong statement.
(A) Indian coals on an average contain 25-30% ash as against 10-12% ash in
imported coking coal
(B) Ammonia is recovered in the form of ammonium sulphate in direct
process of by-product recovery
(C) A high swelling index number of coking coal indicates poor caking
properties of coal
(D) Wash oil is used for scrubbing Benzol from coke oven gas
(A) Indian coals on an average contain 25-30% ash as against 10-12% ash in
imported coking coal
(B) Ammonia is recovered in the form of ammonium sulphate in direct
process of by-product recovery
(C) A high swelling index number of coking coal indicates poor caking
properties of coal
(D) Wash oil is used for scrubbing Benzol from coke oven gas