2759. __________ determination is not a very significant and important test for gasoline.
Gum & sulphur content
Viscosity
Octane number
Reid vapor pressure
✅ The correct answer is option B.
2764. Calorific value of furnace oil is about __________ Kcal/kg.
10000
15000
5000
20000
✅ The correct answer is option A.
2769. Sulphuric acid treatment of petroleum products removes the __________ materials.
gum forming
color forming
asphaltic
all (a), (b) & (c)
✅ The correct answer is option D.
2773. Which of the following has the highest calorific value?
Lignite
Sub-bituminous coal
Anthracite
Peat
✅ The correct answer is option C.
2778. Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene ?
Reforming
Pyrolysis
Alkylation
Hydrocracking
✅ The correct answer is option A.
2782. Which of the following is unsuitable fuel for producer gas manufacture?
Coke
Anthracite
Coal having low fusion point of its ash
Coal having high fusion point of its ash
✅ The correct answer is option C.
2787. Aniline point is the temperature at which
equal weight of diesel & the aniline are completely miscible.
equal weight of aniline & the test sample are completely miscible.
equal volume of aniline & the test sample are completely miscible.
aniline vaporises.
✅ The correct answer is option C.
2791. The optimum percentage of excess air for combustion depends upon the __________ of the fuel.
Type (solid, liquid or gaseous)
Calorific value
Sulphur content
Ignition temperature
✅ The correct answer is option A.
2796. The catalytic cracking of heavier petroleum fraction is done to produce mainly
gasoline
asphalt
diesel oil
tar
✅ The correct answer is option C.
2727. A sooty flame can be made non-luminous by
Admitting more gas
Shutting gas supply
Admitting more air
Shutting air supply
✅ The correct answer is option C.