Top 250+ Solved Waste Water Treatment MCQ Questions Answer
Q. ___________ poisoning water in Japan is from fishes.
a. Bismuth
b. Arsenic
c. Antimony
d. Palladium
Q. Fishes can store more quantity of ___________ in their bodies.
a. Mercury
b. Bismuth
c. Palladium
d. Chlorine
Q. Waste water released from _________ are not the sources of bacteria.
a. Sanitaria
b. Municipalities
c. Tanning
d. Industries
Q. Bacteria and micro organisms present in the water will cause _________ in human and animals.
a. Indigestion
b. Intestinal tract
c. Brain tumour
d. Cancer
Q. The ____________ is an important requirement of the aquatic life.
a. Dissolved nitrogen
b. Dissolved chlorine
c. Dissolved oxygen
d. Dissolved methane
Q. What is the full form of BOD?
a. Biochemical oxygen demand
b. Biological oxygen demand
c. Biometric oxygen deep water
d. Biological oxygen deep water
Q. The disappearance of the plants and animals is due to the _________ in water.www.rejinpaul.comwww.rejinpaul.com Download updated materials from Rejinpaul Network App
a. Nitrogen depletion
b. Chlorine depletion
c. Oxygen depletion
d. Ozone depletion
Q. The decomposition of the matter produces into ___________ and in presence of ____________
a. Carbondioxide and oxygen
b. Oxygen and nitrogen
c. Nitrogen and carbondioxide
d. Nitrogen and chlorine
Q. The temperature of sewage increases. What will be the effect on the dissolved oxygen in sewage?
a. Remains constant
b. Increase
c. Decrease
d. No effect