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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

Answer: ash content
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.
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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

Answer: U-235
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

Answer: buffer solution
81 Which of the following cannot be determined by ultimate analysis of coal?
1 Total carbon
2 Fixed carbon
3 Hydrogen
4 Oxygen

Answer: Fixed carbon
82 Which among the following is a unit process?
1 Distillation
2 Hydrogenation of oils
3 Absorption
4 Humidification

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

Answer: Hydrochloric acid
84 For an ideal gas, Cp-Cv =?
1 R2
2 R/2
3 R
4 2R

Answer: R
85 Kerosine should have
1 low smoke point
2 high smoke point
3 high aromatic content
4 low paraffin content

Answer: high smoke point
86 Priming is needed in a
1 reciprocating pump
2 gear pump
3 centrifugal pump
4 diaphragm pump

Answer: centrifugal pump
87 The catalyst used in Fischer-Tropsch process is
1 nickel
2 zinc oxide
3 alumina
4 thorium oxide

Answer: nickel
88 Drag force on the float of a rotameter
1 - Q
2 «VQ
3 =c Q2
4 is constant

Answer: is constant
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%

Answer: 35% to 37%
90 Cement setting under water employs a/an process.
1 hydration
2 decomposition
3 oxidation
4 reduction

Answer: hydration

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