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Engineering Thermodynamics

Engineering Thermodynamics
The ___ is obtained when carbonization of coal is carried out at 500° to 700° C.

Bituminous coal
Hard coal
Pulverized coal
Soft coal

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Engineering Thermodynamics
Boyle's law i.e. pV = constant is applicable to gases under

Steady change of pressures
All ranges of pressures
High range of pressures
Only small range of pressures

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Engineering Thermodynamics
Kerosene is distilled at

470° to 550°C
345° to 470°C
65° to 220°C
220° to 345°C

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Engineering Thermodynamics
One molecule of oxygen is __________ times heavier than the hydrogen atom.

16
14
12
32

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Engineering Thermodynamics
The compression ratio is the ratio of

Swept volume to clearance volume
Total volume to swept volume
Total volume to clearance volume
Swept volume to total volume

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Engineering Thermodynamics
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is

+60 kJ
-80 kJ
-140 kJ
-40 kJ

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