Chemical Engineering - Chemical Engineering Basics

21.
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
5
1.25
2.5
3.75
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
Which of the following is an acidic constituent of B.F. slag ?
SiO2
FeO
MgO
CaO
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is
5CaO . 3 Al2O3
3CaO . Al2O3
3CaO . SiO2
2CaO . SiO2
Answer: Option
Explanation:
No answer description is available. Let's discuss.

24.
Material of construction of the electrode used in the electric resistance welding is
stainless steel
graphite
copper
steel
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
In practice, the compression ratio of compression-ignition (CI) engine ranges from
15 to 25
5 to 10
40 to 55
60 to 70
Answer: Option
Explanation:
No answer description is available. Let's discuss.