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Chemical Engineering Basics

Chemical Engineering Basics
Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

None of these
Semi-conductor
Insulator
Conductor

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Chemical Engineering Basics
Silicon crystal can be converted to p-type semi-conductor by doping with

Carbon
Boron
Phosphorous
Nitrogen

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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.

Decreases
Increases
Shows inversion of solubility
None of these

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

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

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Chemical Engineering Basics
Alloys having more than 80% copper are generally more

Prone to season cracking
Corrosion resistant
Machinable
Abrasion resistant

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Chemical Engineering Basics
Isotropic materials have the same __________ in all directions.

Elastic properties
Thermal properties
Density
Induced stresses

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MORE MCQ ON Chemical Engineering Basics

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