Chemical Engineering - Environmental Engineering

1.
Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by
biological oxygen pond.
radial settling tank (thickener) using coagulant (lime & ferrous sulphate).
lagoons.
filtration.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
Persons working in cement plants and limestone quarries are more prone to disease like
cancer
asthma
silicosis
flourosis (bone disease)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
Particulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called
fumes
mists
smoke
aerosols
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
Operating principle of cyclone separator is based on the action of __________ dust particles.
diffusion of
centrifugal force on
gravitational force on
electrostatic force on
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.
hydrogen sulphide
mercury
cadmium
asbestos
Answer: Option
Explanation:
No answer description is available. Let's discuss.