Chemical Engineering - Chemical Engineering Basics

31.
Joining of thin foils is preferred to be done by
gamma rays
X-rays
microwaves
gas welding
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
Which of the following metals reacts violently with water ?
Mercury
Sodium
Calcium
Magnesium
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
A steam carraying pipeline is insulated with two layers of insulating materials with the inferior insulation material forming the inner part. If the two insulating layers are interchanged, the heat conducted will
increase.
decrease.
remain unaffected.
may increase or decrease; depends on the thickness of each layer.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
Damage to metal surface by mechanical action is called
pitting
corrosion
erosion
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
The escape velocity of a body on earth which is independent of its mass is about __________ km/second.
3
7
11
15
Answer: Option
Explanation:
No answer description is available. Let's discuss.