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Chemical Engineering / Q&A

For a turbine agitated and baffled tank, operating at low Reynold’s number (based on impeller diameter), the power number (Np) varies with NRe as_________________?

Chemical Engineering / Q&A, MCQs / Q&A /
For a turbine agitated and baffled tank, operating at low Reynold’s number (based on impeller diameter), the power number (Np) varies with NRe as_________________?

A. Np ∝ NRe
B. Np ∝ √NRe
C. Np → constant
D. Np ∝ 1/NRe (Correct)

 

For a turbine agitated and baffled tank, operating at low Reynold’s number (based on impeller diameter), the power number (Np) varies with NRe as_________________? Read More »

Chemical Engineering / Q&A, MCQs / 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_______________?

Chemical Engineering / Q&A, MCQs / 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

 

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_______________? Read More »

Chemical Engineering / Q&A, MCQs / Q&A

For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is__________________?

Chemical Engineering / Q&A, MCQs / Q&A /
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)

 

For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is__________________? Read More »

Chemical Engineering / Q&A, MCQs / Q&A

The inherent characteristic of an equal percentage valve relating flow rate ‘q’ with valve stem movement ‘x’ are described by the equation_________________?

Chemical Engineering / Q&A, MCQs / Q&A /
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

 

The inherent characteristic of an equal percentage valve relating flow rate ‘q’ with valve stem movement ‘x’ are described by the equation_________________? Read More »

Chemical Engineering / Q&A, MCQs / Q&A

Which of the following dust collection equipments is the least efficient (for sub-micronic particles) ?

Chemical Engineering / Q&A, MCQs / Q&A /
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

 

Which of the following dust collection equipments is the least efficient (for sub-micronic particles) ? Read More »

Chemical Engineering / Q&A, MCQs / Q&A

An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called ____________ furnace?

Chemical Engineering / Q&A, MCQs / Q&A /
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

 

An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called ____________ furnace? Read More »

Chemical Engineering / Q&A, MCQs / Q&A