Chemical Engineering - Chemical Engineering Basics

36. 

__________ is a non volatile film forming constituent of a paint.

A. Thinner
B. Dryer
C. Drying oil
D. none of these

Answer: Option C

Explanation:

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37. 

According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to __________ times the yield stress.

A. 0.5
B. 2
C. 2
D. 3/2

Answer: Option A

Explanation:

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38. 

Transformer cores are normally made from

A. soft ferrites
B. high purity iron
C. grain oriented Fe-Si alloy
D. Al-Ni-Co alloy

Answer: Option C

Explanation:

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39. 

__________ test is the appropriate test to determine whether a material is ductile or brittle.

A. Impact
B. Cupping
C. Hardness
D. Tensile

Answer: Option A

Explanation:

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40. 

Main constituent of bone ash is

A. ammonium phosphate.
B. calcium phosphate.
C. animal charcoal.
D. ammonium sulphate.

Answer: Option B

Explanation:

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