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Chemical Engineering Basics

Chemical Engineering Basics
There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.

Three
One
Two
None of these

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Chemical Engineering Basics
Out of the following, the joint produced by __________ has the lowest strength.

Soldering
Welding
Rivetting
Brazing

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Chemical Engineering Basics
The ratio of thermal & electrical conductivity is same for all the metals at the same temperature ; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

T
1/T
1/T²
T²

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

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

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Chemical Engineering Basics
Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about

0.70902777777778
0.37569444444444
0.95902777777778
1.2090277777778

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Chemical Engineering Basics
Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?

Limestone
Sinter
Coke
Iron ore

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