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CHEMICAL ENGINEERING BASICS

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

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

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Chemical Engineering Basics
Scaling occurs in boiler tubes due to the fact that, the solubility of Ca(OH)₂ __________ with increasing temperature.

Shows inversion of solubility
Decreases
None of these
Increases

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Chemical Engineering Basics
Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.

Hexagonal close, packed (hcp)
Body centred cubic (bcc)
Face centred cubic (fcc)
Simple cubic

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Chemical Engineering Basics
Deformation band is absent in materials having __________ lattice crystal structure.

Fcc
None of these
Bcc
Hcp

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Chemical Engineering Basics
The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

50
None of these
100

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