41. The internal energy of the combustion products is . . . . . . . . compared to that of reactants. A. more or less; (depends on the state of fuel) B. more C. less D. same Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
42. Natural gas is essentially A. methane B. propane + butane C. 30% CO + 15% H2 + 45% N2 D. 50% methane 50% H2 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
43. Size of blast furnace grade coke is . . . . . . . . mm. A. 15 - 25 B. 5 - 16 C. 10 - 15 D. 25 - 80 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
44. Softening temperature of coal ash is a measure of the . . . . . . . . of coal. A. clinkering tendency B. caking tendency C. coking tendency D. size stability Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
45. Thorium, zirconium, platinum, nickel, iron, molybdenum, tungsten are the . . . . . . . . A. Acidic refractories B. Basic refractories C. Neutral refractories D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
46. Proximate analysis of coal determines its . . . . . . . . content. A. moisture, volatile matter, ash & fixed carbon B. moisture, ash, sulphur & volatile matter C. moisture, sulphur, nitrogen & fixed carbon D. none of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
47. Improper storage condition results in the weathering of coal and spontaneous combustion, which increases its A. friability & oxygen content B. caking index C. yield of carbonized products D. calorific value Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
48. Flue gas discharge velocity through chimney of a big thermal power plant may be around . . . . . . . . m/sec. A. 0.5 B. 10 C. 500 D. 50 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
49. Basic oxygen furnace is used for A. Iron making B. Degassing of diatomic gasses C. Desulphurization of steel D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
50. The Rotary kiln furnace is used for A. Flux making B. Sinter making C. Conventional route of iron making D. Alternative routes of iron making Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
