Chemical Engineering questions and answers

Chemical Engineering Questions and Answers

A set of Chemical Engineering questions and answers to test your understanding of developing and designing chemical manufacturing processes. Ideal for Chemical engineering students and candidates preparing for job aptitde tests or interviews.

6.

Corrosion of metals can not be prevented by its

A.

tempering

B.

chromising

C.

aluminising

D.

alloying

Correct answer is A

No explanation has been provided for this answer.

7.

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

A.

10-3

B.

103

C.

10-15

D.

l015

Correct answer is A

No explanation has been provided for this answer.

8.

If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity

A.

is trebled.

B.

remains unchanged.

C.

decreases by a factor of √3.

D.

decreases by a factor of 1/3.

Correct answer is B

No explanation has been provided for this answer.

9.

Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as

A.

Gr0.25, Gr

B.

Gr0.25, Gr0.33

C.

Gr, Gr0.25

D.

Gr0.33, Gr0.25

Correct answer is A

No explanation has been provided for this answer.

10.

The product out from a cupola is called

A.

wrought iron

B.

pig iron

C.

cast iron

D.

none of these

Correct answer is C

No explanation has been provided for this answer.