chemical engineering Mcqs
4902. Thermodynamic Celsius scale of temperature measurement is________________?
comments icon0

A. Defined on the basis of melting point of ice and evaporation temperature of water vapor

B. Defined on the basis of melting point of ice and condensation temperature of water vapor

C. Having an interval of 100 between ice point to steam point

D. Both B. and C.
4903. Water is a better coolant than a gas (like CO2, He, N2 etc.), because it_________________?
comments icon0

A. Has a better heat transfer characteristics, and it can be pressurised to attain a high temperature

B. Is a better neutron moderator as well

C. Require comparatively smaller pumps and heat exchanger for a given heat transfer rate

D. All A., B. and C.
4904. Which of the following may be used to measure the rate of nuclear disintegration ?
comments icon0

A. Cyclotron

B. Mass spectrograph

C. Geiger-Muller Counter

D. Cold chamber

4908. Fast breeder reactors do not____________________?
comments icon0

A. Convert fertile material to fissile material

B. Use fast neutrons for fission

C. Use molten sodium as coolant

D. Use Th-232 as fissile fuel
4909. Which of the following is not a good moderating material ?
comments icon0
A. All A., B. and C.

B. Boron

C. Concrete

D. 18/8 stainless steel

4911. Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are________________?
comments icon0

A. Air to open valve with the controller direct acting

B. Air to close valve with the controller direct acting

C. Air to open valve with the controller indirect acting

D. Air to close valve with the controller indirect acting

4912. Routh stability method uses ______________ loop transfer function?
comments icon0

A. Either A. or B.

B. Closed

C. Open

D. Neither A. nor B.

4913. Composition of natural gas is determined by the_________________?
comments icon0

A. Haldane apparatus

B. Mass spectrometer

C. Chromatograph

D. Both B. and C.
4916. Bimetal strips are not used in________________?
comments icon0
A. Thermocouples

B. Relays for opening & closing of electrical circuits

C. Bimetallic thermometers

D. Thermostats

4917. The term analogous to voltage in a single tank system is the_______________?
comments icon0
A. Level of liquid

B. Liquid volume in the tank

C. Heat content of the system

D. Flow rate

4918. A manometer measures the _____________ pressure?
comments icon0

A. Absolute

B. Atmospheric

C. Gauge

D. None of these

4919. Which of the following is artificially produced as it does not occur in nature ?
comments icon0

A. Uranium-235

B. Uranium-233

C. Plutonium-239

D. Both B. and C.
4920. The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the________________?
comments icon0

A. Maintenance cost of the former is less

B. None of these

C. Thermal efficiency of the former is higher

D. Fuel cost per unit power generated is less
4921. Which is the most suitable instrument for measuring pressure below 3 microns ?
comments icon0

A. Mcleod gauge

B. Ionisation gauge

C. Bourdon gauge

D. Alphatron

4922. Humidity of air can be determined by a__________________?
comments icon0

A. Chromatograph

B. Sling psychrometer

C. Mass spectrometer

D. Polarimeter

4923. A negative gain margin expressed in decibels means a/an ____________ system?
comments icon0
A. Unstable

B. None of these

C. Stable

D. Critically damped

4925. Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 1600C ?
comments icon0

A. Photoelectric pyrometer

B. Thermocouples

C. Optical pyrometer

D. Radiation pyrometer

4926. Final product of uranium extraction plant at Jadugoda (Bihar) is________________?
comments icon0

A. Uranium

B. Uranium carbide

C. Uranium oxide

D. Magnesium diuranate
4927. Out of the following places, a nuclear power plant is not located at______________?
comments icon0

A. Kaiga (Karnataka)

B. Rawatbhata (Rajasthan)

C. Kalpakkam (Tamilnadu)

D. Talcher (Orissa)
4928. Isotopes of an element have different_____________________?
comments icon0

A. Nuclear charge

B. Electronic configuration

C. Chemical properties

D. Mass number
4929. ____________ are analysed using a Polarograph?
comments icon0

A. Isotonic solutions

B. Gases

C. Liquids

D. Solids
4934. A magnetic flowmeter is_________________?
comments icon0

A. Based on the linear relationship between the fluid flow rate and the induced voltage

B. Capable of measuring the flow rate of slurries and electrolytes

C. All A., B. and C.

D. Based on the principle of Faradays law

4935. Cascade control means _______________?
comments icon0

A. On-off control

B. More than one feed-back loop

C. Feed forward control

D. One feed-back loop

4937. A moderator _____________ the neutrons?
comments icon0
A. Slows down

B. Reflects

C. Absorbs

D. Accelerates

4939. Mcleod gauge measures the _____________ pressure?
comments icon0

A. Very high

B. Atmospheric

C. Sub-atmospheric

D. Positive

4943. Stability of a control system containing a transportation lag can be best analysed by_______________?
comments icon0
A. Frequency response methods

B. None of these

C. Routh test

D. Root locus methods

4944. The function of a transducer is to _______________ ?
comments icon0

A. Modify the input signal

B. Amplify the input signal

C. Codify/decodify the input signal

D. Convert the primary signal into a more useful quantity, usually an electric impulse
4946. Which of the following controllers has maximum offset ?
comments icon0
A. P-controller

B. P-D controller

C. P-I-D controller

D. P-I controller

4947. Which of the following flow-metering instruments is an areameter ?
comments icon0
A. Rotameter

B. Pitot tube

C. Venturimeter

D. Hot wire anemometer

4948. Routh test_________________?
comments icon0

A. Criterion is not applicable to systems with polynomial characteristic equation

B. Cannot be used to test the stability of a control system containing transportation lag

C. Criterion provides information about the actual location of roots

D. Cannot determine as to how many roots of the characteristics equation have positive real roots

4949. A nuclear reactor cant be used for_________________?
comments icon0

A. Marine ship propulsion

B. None of these

C. The production of radioisotopes

D. Supplying intense fields or beams of neutron for scientific experiments