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Chemical Engineering Basics

Chemical Engineering Basics
Thermal efficiency of an internal combustion engine is around __________ percent.

80
65
8
35

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Chemical Engineering Basics
With increase in steam pressure, its specific volume decreases

Exponentially
Rapidly first and then slowly
Linearly
Slowly first and then rapidly

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Chemical Engineering Basics
Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

7
1.5
3
5

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Chemical Engineering Basics
Boiler draught of 10 mm water column is equivalent to

10 kgf/mm²
10 kgf/m²
1 kgf/mm²
1 kgf/m²

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Chemical Engineering Basics
When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively

Decreases & decreases
Decreases & increases
Increases & increases
Increases & decreases

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Chemical Engineering Basics
The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral void.

Equal to
Greater than
Less than
Either A, B or C; depends on the size of atom

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