Coking time in a commercial high temperature coal carbonisation plant is about __________ hours. September 7, 2025 by Admin 6 18 28 36 ✅ The correct answer is option B.
A petroleum well is called ‘dry’, if it contains September 7, 2025 by Admin very little oil. no natural gas. only natural gas. all (a), (b) and (c). ✅ The correct answer is option C.
Which of the following constituents of a fuel does not contribute to its calorific value on combustion? September 7, 2025 by Admin Hydrogen Sulphur Carbon None of these ✅ The correct answer is option D.
Smoke point of kerosene expresses its September 7, 2025 by Admin burning characteristics. luminosity characteristics. aromatic content directly. lamp wick wetting characteristics. ✅ The correct answer is option A.
Petroleum September 7, 2025 by Admin is optically active. constitutes mainly of olefins. does not contain asphalt. does not contain aromatics. ✅ The correct answer is option A.
Which of the following is the easiest to crack? September 7, 2025 by Admin Paraffins Olefins Naphthenes Aromatics ✅ The correct answer is option A.
Name the endothermic reaction out of the following: September 7, 2025 by Admin Catalytic cracking. Hydrocracking. Dehydrogeneration of naphthene to produce aromatic. Catalytic polymerisation. ✅ The correct answer is option C.
Very __________ coals are completely devoid of cokability i.e, it is non coking. September 7, 2025 by Admin Young Mature Both A & B Neither A nor B ✅ The correct answer is option C.
Which of the following is not used as a binder in coal briquetting? September 7, 2025 by Admin Tar Molasses Pitch Line ✅ The correct answer is option D.
Gobar gas constitutes mainly of September 7, 2025 by Admin CH₄ & CO₂ CO & CO₂ CH₄ & N₂ CO & N₂ ✅ The correct answer is option A.