निम्नलिखित में से कौन सा समूह केवल पेट्रोकेमिकल्स के रूप में प्राप्त उत्पादों या उनके डेरिवेटिव को दर्शाता है?

Which of the following is NOT obtained as a direct byproduct/derivative during the destructive distillation of coal?

Which natural resource byproduct is a thick, viscous black liquid produced during the destructive distillation of coal?