chemical engineering MCQs – Page 242

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 Review each marked answer and report any item that may be outdated or unclear.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
4821. The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K (s + 1)/[2 (2s + 1) (3s + 1)] will have a definite number of loci for variation of K from 0 to ?. The number of loci is_______________?
comments icon0

A. 2

B. 3

C. 1

D. 4

4822. The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is_____________________?
comments icon0

A. Much more

B. Less

C. Same

D. More

4823. Tarapur (INDIA) atomic power station____________________?
comments icon0

A. Has two boiling water reactors of American design

B. Has an installed capacity of 400 MW

C. All A., B. and C.

D. Is the first power reactor in India, which became critical in 1969

4824. Photoelectric pyrometers are suitable in the temperature range of ________________ C?
comments icon0
A. 800-1600

B. 400-1000

C. 800-2500

D. 400-1600

4825. Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?
comments icon0

A. Object is transparent

B. Enhancement or attenuation of radiation occurs in the sighting path

C. Object and surrounding are at almost the same temperature

D. Object has varying emissivity

4826. A fertile material is the one, which can be__________________?
comments icon0
A. Converted into fissile material on absorption of neutron

B. Fissioned by slow (thermal) neutrons

C. Fissioned by either slow or fast neutrons

D. Fissioned by fast neutrons

4827. Liquid flow rate in a small channel is best measured by a/an____________________?
comments icon0

A. Venturimeter

B. Pitot tube

C. Weir

D. Vane meter

4828. The number of neutrons in the nucleus of Uranium-233 (92U233) is _________________?
comments icon0

A. 92

B. 141

C. 325

D. 233

4829. The main ore of thorium is_________________?
comments icon0

A. Galena

B. Limonite

C. Monazite sand

D. Pitchblende

4830. Atoms with same number of neutrons, but different number of nucleons are called___________________?
comments icon0

A. Isostere

B. Isotopes

C. Isotones

D. Isobars

4831. Percentage of U-238 in natural uranium is around__________________?
comments icon0
A. 99.29

B. 29.71

C. 0.71

D. 0.015

4832. Heavy water used in the nuclear reactors to slow down the speed of neutrons is __________________?
comments icon0

A. Highly purified water

B. None of these

C. A compound of oxygen and deuterium

D. Water having dissolved salts of heavy metals

4833. Extraction of uranium from its ore is done by ______________ method?
comments icon0

A. Electrometallurgical

B. Chemical

C. Pyrometallurgical

D. Physical beneficiation

4834. ______________ is undesirable in thermocouples used in industries ?
comments icon0

A. Corrosion resistance

B. Linear relation of emf to temperature

C. Non-linear relation of emf to temperature

D. Oxidation resistance

4835. Hydrogen differs from deuterium in _____________ properties?
comments icon0

A. All A., B. and C.

B. Physical

C. Chemical

D. Radioactive

4836. Pick out the most suitable instrument for measuring temperature in the range of-40 to 425C ?
comments icon0

A. None of these

B. Radiation pyrometer

C. Mercury thermometer

D. Bimetallic thermometer
4837. Thermal wells are used in the temperature measurement to____________________?
comments icon0

A. Reduce measuring lag

B. Increase the sensitivity

C. Increase the fidelity

D. Guard against corrosive and oxidising action on thermocouple materials
4838. Which thermocouple can be used to measure a temperature of around 1400C ?
comments icon0

A. Aluminium-Chromel

B. Copper-constantan

C. None of these

D. Platinum-platinum + rhodium
4839. Which of the following thermocouples has the widest temperature measurement range ?
comments icon0

A. Copper-constantan

B. Iron-constantan

C. Platinum-platinum/rhodium

D. Chromel-alumel

4840. The most commonly used nuclear fuel in boiling water reactor is___________________?
comments icon0
A. Enriched uranium

B. Plutonium

C. Monazite sand

D. Natural uranium