increase its smoke point.
reduce gum formation.
reduce the pour point.
increase its octane number.
✅ The correct answer is option D.
Engineering
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2832. Aniline point of the diesel is a measure of its __________ content.
aromatic
paraffin
olefin
naphthene
✅ The correct answer is option A.
2833. Cetane number of alpha methyl naphthalene is assumed to be
0
100
50
∞
✅ The correct answer is option A.
2834. By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of
Tar
Benzol
Ammonia
None of these
✅ The correct answer is option C.
2835. The advantage of firing pulverised coal in the furnace lies in the fact, that it
Permits the use of high ash content coal
Permits the use of low fusion point ash coal
Accelerates the burning rate and economises on fuel combustion
All of the above
✅ The correct answer is option C.
2836. The maximum percentage of CO₂ in a flue gas (from a carbonaceous fuel) can be
21
77
79
29
✅ The correct answer is option A.
2837. The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always
1
<1
> 1
Unpredicatable
✅ The correct answer is option B.
2838. Calorific value of tar is about __________ Kcal/kg.
8800
12000
5000
16000
✅ The correct answer is option A.
2839. As the equilibrium moisture content of the coal increases, its
Calorific value increases
Swelling number decreases
Swelling number increases
Bulk density decreases
✅ The correct answer is option B.
2840. A good metallurgical coke should have very low
Sulphur & phosphorous content
Porosity
Fusion point of its ash
Hardness & strength
✅ The correct answer is option A.