Chemical Engineering - Chemical Engineering Basics

21.
The Al2 O3 content of cryolite in Hall-Heroult's cell is maintained between __________ percent.
2-5
18-20
12-15
6-12
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
Number of electrons in the outermost shell of a semi-conductor material is
2
4
6
8
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
The velocity at which individual particles from a fluidised bed are carried away by the fluid passing through it, is defined as the
minimum fluidisation velocity.
terminal velocity.
elutriation velocity.
superficial velocity.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

24.
Tip of the match stick contains a mixture of
K + S
K + S + K2Cr2O7
S + K2Cr2O7 + White P
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
Which of the following is not an ore of aluminium ?
Troosite
Kaolin
Alunite
Cryolite
Answer: Option
Explanation:
No answer description is available. Let's discuss.