Chemical Engineering - Chemical Engineering Basics

1. 

Yield strength of a material is determined by the __________ test.

A. creep
B. tension
C. compression
D. endurance

Answer: Option B

Explanation:

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2. 

In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.

A. μ , α and θ all have units of m/s.
B. μ , α and θ all have units of m2/s.
C. α and θ have units of m2/s, while μ has unit of m/s.
D. α and θ have units of m/s, while μ has unit of m2/s.

Answer: Option C

Explanation:

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3. 

Window panes of aeroplanes are normally made of

A. perspex (PMMA)
B. teflon (PTFE)
C. bakelite (phenol formaldehyde)
D. polystyrene

Answer: Option A

Explanation:

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4. 

__________ flux is used for the extraction of metal from its self fluxing ores.

A. No
B. Acid
C. Basic
D. Neutral

Answer: Option A

Explanation:

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5. 

Good design of the casing of a centrifugal pump aims at minimising the

A. cavitation
B. frictional losses
C. kinetic energy loss
D. static head

Answer: Option C

Explanation:

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