Chemical Engineering - Process Control and Instrumentation

1. 

Change of angle of refraction with composition comprises the working principle of a

A. polarimeter
B. polarograph
C. spectrometer
D. refractrometer

Answer: Option D

Explanation:

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2. 

Which of the following instruments is not used for measuring sub-zero (<0°) temperatures ?

A. Platinum resistance thermometer
B. Mercury in glass thermometer
C. Vapor pressure thermometer
D. Radiation pyrometer

Answer: Option D

Explanation:

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3. 

Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C ?

A. Optical pyrometer
B. Radiation pyrometer
C. Photoelectric pyrometer
D. Thermocouples

Answer: Option D

Explanation:

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4. 

Find the Laplace transform of the following input function shown in figure.

A.
B.
C.
D.

Answer: Option A

Explanation:

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5. 

Flame photometry is used for the determination of compositional analysis of

A. solids
B. alkali metals
C. natural gas
D. isotopes

Answer: Option B

Explanation:

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