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Chemical Engineering Basics

Chemical Engineering Basics
Which of the following is an example of cathodic protection of metals against corrosion ?

Case hardened steel
Painted steel
Galvanised iron
Lead lined reactor

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Chemical Engineering Basics
Tempering of a material does not improve its

Softness
Toughness
Machinability
Internal stress level

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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
Kinematic viscosity of water as compared to that of air is

Same
More
15% less
15% more

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Chemical Engineering Basics
A suitable lubricant used for watches is

Hazel-nut oil
Palm oil
Grease
Metallic soap solution

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Chemical Engineering Basics
If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

21/3
23
23/2
25/2

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