2370. Which one is preferred for aircraft engine ?
High viscosity index lube oil.
Low viscosity index lube oil.
High freezing point aviation fuel.
None of these.
✅ The correct answer is option A.
2375. Catalyst used in the isomerisation is
aluminium chloride
alumina
nickel
phosphoric acid
✅ The correct answer is option A.
2341. Highest quality bitumen is produced from the __________ crude oil.
paraffinic
naphthenic
intermediate
mixed
✅ The correct answer is option B.
2347. Solution used in Doctor’s treatment for the removal of mercaptans is
sodium hydroxide
sodium plumbite
cupric chloride
potassium isobutyrate
✅ The correct answer is option B.
2352. Crude oil is transported inland from oil field to refineries, mainly by the
road tankers
rail tankers
underground pipelines
none of these
✅ The correct answer is option C.
2357. Waxes present in petroleum products
can be separated out by distillation.
are not soluble in them.
crystallise out at low temperature.
decrease their viscosity.
✅ The correct answer is option C.
2362. Mercaptans are added to liquefied petroleum gas (LPG) to
reduce its cost.
narrow down its explosion limit.
assist in checking its leakage from cylinder.
increase its calorific value.
✅ The correct answer is option C.
2366. The conductivity of crude oil-water mixture depends on the
pH value
water percentage
temperature
all (a), (b) and (c)
✅ The correct answer is option D.
2371. Smoke point of kerosene is the
time after which smoking starts on burning.
temperature at which smoking starts.
maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp.
none of these.
✅ The correct answer is option C.
2337. Casing head gasoline is the liquid
butane.
propane.
natural gas.
gasoline separated from wet natural gas by compression.
✅ The correct answer is option A.