IndiaBIX

Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 6
6.
Insufficient washing of sand grains in a rapid sand filter causes
air binding
shrinkage of filtering media
mud balls
expansion of filtering media
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Which of the following sources is responsible for maximum air pollution ?
Industrial chimney exhaust.
Forest fire.
Automobiles exhaust.
Photochemical oxidation of organic matter.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream ?
Sedimentation tank
Circular clarifier
Mechanical flocculation
Chemical coagulation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
In sewage treatment, its sedimentation is speeded up by commonly adding
hydrochloric acid.
lime.
copper sulphate.
sodium sulphate.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Noise level in a quiet private business office is about __________ decibels.
25
50
70
85
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers