chemical engineering MCQs – Page 234

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs

4661. Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?
0

A. Vapor pressure thermometer

B. Mercury in glass thermometer

C. Thermocouple

D. Resistance thermometer

4662. The rate of material _____________ is zero in case of a steady state system?
0

A. Production

B. Accumulation

C. Input

D. Generation

4663. At standard conditions, N2 + 2O2 ? 2NO2; ?G = 100 kJ/mole NO + O2 ? 2NO2; ?G = -35 kJ/mole The standard free energy of formation of NO in kJ/mole is___________________?
0

A. 170

B. 15

C. 30

D. 85

4664. Specific gravity of a liquid cannot be measured by a/an __________________?
0

A. Specific gravity bottle

B. Anemometer

C. Hydrometer

D. Pycnometer

4665. Bode stability method uses ____________ loop transfer function?
0

A. Open

B. Neither A. nor B.

C. Either A. or B.

D. Closed

4666. Smoke density of the flue gas going out of the chimney is measured by a __________________?
0

A. Chromatograph

B. Photo electric cell

C. Thermal conductivity meter

D. Polarograph

4667. The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be_________________?
0

A. 4-Oct

B. 10-Oct

C. 3-Oct

D. 10-11

4668. Platinum resistance thermometer is the international standard for temperature measurement between __________________?
0

A. Triple point of hydrogen and freezing point of antimony

B. 13.81K to 903.9K

C. Both A. and B.

D. Neither A. nor B.

4669. N2 content in a urea sample was found to be only 42%. What is the actual urea content of the sample? (Molecular weight of urea = 60) ?
0

A. 80%

B. 90%

C. 98%

D. 95%

4670. Raoults law is obeyed by a _____________ solution?
0

A. Molar

B. Normal

C. Saturated

D. None of these

4671. Which of the following is a desirable characteristic of an instrument ?
0

A. High measuring lag

B. High fidelity

C. Poor reproducibility

D. High drift

4672. The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches ___________________?
0

A. ?

B. 0

C. -1

D. 1

4673. The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly__________________?
0

A. Hyperbolic

B. Parabolic

C. Non-linear

D. Linear

4674. Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the corresponding states. At equal reduced conditions i.e., at the corresponding state, the ____________ of different gases are nearly the same?
0

A. Molecular weight

B. Humidity

C. Compressibility

D. None of these

4675. Mass spectrometer is used for the composition analysis of____________________?
0

A. None of these

B. Solids

C. Isotopes

D. Alloys

4676. Zirconia probe is used for the continuous measurement of ______________ flue gases going out of the furnace?
0

A. Temperature of

B. Carbon dioxide in

C. Carbon monoxide in

D. Oxygen in

4677. The effect of pressure on the heat capacity of the gases ______________ is negligible?
0

A. At pressure below one atmosphere

B. Below the critical temperature

C. Both A. & B.

D. Neither A. nor B.

4678. Measurement of sub-zero Celsius temperature in industry is done most commonly by __________________?
0

A. Gas thermometers

B. Bi-metallic thermometers

C. Resistance thermometers

D. Thermocouples

4679. Helium gas constant volume thermometer is suitable for the measurement of a temperature of ______________ C?
0

A. > 800

B. > 0

C. < 0

D. < 100

4680. Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?
0

A. Thermo electric pyrometer

B. Radiation/infrared pyrometer

C. Mercury in glass thermometer

D. Filled system thermometer

Previous Next

Showing 4661 to 4680 of 8709 mcqs