Chemical Engineering - Chemical Process

1.
The noble gas which occurs most abundantly in the atmosphere is
helium
neon
krypton
argon
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
Production of alcohol by fermentation of molasses is an __________ process.
anaerobic
aerobic
endothermic
both(b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
Main constituents of portland cement are calcium aluminate and
gypsum
silicates
sodium silicate
carbonates
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
Pick out the wrong statement.
High early strength cement are made from materials having high silica to lime ratio.
The function of gypsum in cement is to enhance its initial setting rate.
Acid resistant cements are known as silicate cement.
Major component of greyish portland cement is tricalcium silicate.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
Common salt is generally not produced commonly by __________ method from brine.
freeze drying
electrolytic
solar evaporation
vacuum evaporation
Answer: Option
Explanation:
No answer description is available. Let's discuss.