76
When you completely burn the coal sample in a muffled furnace at 700 °C-750 °C and weigh the residue you get
1
volatile matter
2
fixed carbon
3
ash content
4
mineral matter
77
Pick the correct statement from the following :
1
Synthesis gas is a mixture of CO, C02 and H2.
2
Synthesis gas is a mixture of C02 and H2.
3
Synthesis gas is a mixture of 02 and H2.
4
None of the above
Answer: Synthesis gas is a mixture of CO, C02 and H2.
78
The specific type of uranium used to produce nuclear energy most efficiently is
1
U-233
2
U-234
3
U-235
4
U-236
79
A hydel project that captures the kinetic energy of water without large reservoir or even dam is called
1
conventional project
2
run-of-the-river project
3
micro-hydro project
4
conduit project
Answer: run-of-the-river project
80
A solution with reasonably permanent pH is called a/an
1
non-ideal solution
2
colloidal solution
3
buffer solution
4
ideal solution
81
Which of the following cannot be determined by ultimate analysis of coal?
1
Total carbon
2
Fixed carbon
3
Hydrogen
4
Oxygen
View Answer
82
Which among the following is a unit process?
1
Distillation
2
Hydrogenation of oils
3
Absorption
4
Humidification
View Answer
Answer: Hydrogenation of oils
83
Which acid is used to the greatest extent for metal pickling?
1
Sulphuric acid
2
Hydrochloric acid
3
Nitric acid
4
Phosphoric acid
View Answer
Answer: Hydrochloric acid
85
Kerosine should have
1
low smoke point
2
high smoke point
3
high aromatic content
4
low paraffin content
View Answer
86
Priming is needed in a
1
reciprocating pump
2
gear pump
3
centrifugal pump
4
diaphragm pump
View Answer
87
The catalyst used in Fischer-Tropsch process is
1
nickel
2
zinc oxide
3
alumina
4
thorium oxide
View Answer
88
Drag force on the float of a rotameter
1
- Q
2
«VQ
3
=c Q2
4
is constant
View Answer
89
The percent available chlorine in a good commercial sample of bleaching powder is
1
15% to 17%
2
35% to 37%
3
53% to 56%
4
69% to 71%
View Answer
90
Cement setting under water employs a/an process.
1
hydration
2
decomposition
3
oxidation
4
reduction
View Answer
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