A. Np ∝ NRe
B. Np ∝ √NRe
C. Np → constant
D. Np ∝ 1/NRe (Correct)
Chemical Engineering / Q&A
Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by_______________?
A. Chlorination
B. Treating in biological oxygen pond (Correct)
C. Chemical coagulation
D. None of these
For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is__________________?
A. 2250
B. 1125
C. 460
D. 230 (Correct)
The inherent characteristic of an equal percentage valve relating flow rate ‘q’ with valve stem movement ‘x’ are described by the equation_________________?
A. dq/dx = K (Correct)
B. dq/dx = K.q
C. dq/dx = K/q
D. dq/dx = Kq2
Which of the following dust collection equipments is the least efficient (for sub-micronic particles) ?
A. Dust catcher (gravity type) (Correct)
B. Cyclone separator
C. Bag filter
D. Hollow wet scrubber
An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called ____________ furnace?
A. Resistance
B. Arc (Correct)
C. Low frequency induction
D. None of these
The order of a chemical reaction is__________________?
A. An experimentally determined quantity (Correct)
B. Always equal to the total stoichiometric number of reactants
C. Never fractional
D. None of these
Thermosetting resins are those polymers, which__________________?
A. Do not increase in plasticity with rise in temperature (Correct)
B. Allow slip to occur between molecules
C. Do not take on a permanent set
D. None of these
AnsweringExams Question No. 26197
A. Electron (Correct)
B. α-particle
C. Proton
D. Neutron
Addition of a non-volatile solute to a solvent produces a ______________ in its solvent?
A. Freezing point elevation
B. Boiling point depression
C. Vapor pressure lowering (Correct)
D. All A., B. & C.