Which is NOT a by-product of refining petroleum?

এই অধ্যায়ের আরও প্রশ্ন

• C-11-Q120Which of the following runs on petrol and diesel?
• C-11-Q121Foreign currency can be saved if oil is extracted from—
• C-11-Q122Natural gas of Haripur is used in fertilizer factory of—
• C-11-Q123Natural gas of Haripur is used in cement factory of—
• C-11-Q124Natural gas of Titas is used in fertilizer factory of—
• C-11-Q125The tea gardens depend on the natural gas of—
• C-11-Q126Natural gas is used in lieu of furnace oil in some electric plants of—
• C-11-Q127Titas gas is used in thermal electric plants of—
• C-11-Q128Natural gas is NOT used to produce—
• C-11-Q129At present, what percent of extracted coal from Barapukuria is used in the thermal power plant?