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Chemical Engineering Basics

Chemical Engineering Basics
Notched bar test is used for testing the __________ of a material.

Endurance limit
Corrosion resistance
Machinability
Impact strength

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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
0.95902777777778
1.2090277777778
0.37569444444444

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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.

100
50
None of these

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Chemical Engineering Basics
__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.

Collar
Bell and Spigot
Flanged
Expansion

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Chemical Engineering Basics
During sensible cooling of air, its wet bulb temperature

Decreases & the dew point increases
Decreases but dew point remains constant
Increases but dew point remains constant
Increases & the dew point decreases

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Chemical Engineering Basics
Cold chiesel & hammers are made of

High speed steel
Forged steel
High carbon steel
Mild steel

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