This set of Applied Chemistry Multiple Choice Questions & Answers (MCQs) focuses on “Types of Water Pollutants and Effects”.
1. ___________ poisoning water in Japan is from fishes.
Explanation: The arsenic poisoning water in Japan is from fishes where the industrial effluent was going into the sea containing arsenic.
2. Fishes can store more quantity of ___________ in their bodies.
Explanation: Fishes can store more quantity of mercury. They can also store lead and arsenic in their bodies.
3. Waste water released from _________ are not the sources of bacteria.
Explanation: Waste water released from the sanitarias, municipalities, tanning and slaughtering plants are the sources of the bacteria.
4. Bacteria and micro organisms present in the water will cause _________ in human and animals.
b) Intestinal tract
c) Brain tumour
Explanation: Bacteria and micro organisms present in the water will cause intestinal tract. The infected individual has the intestinal discharge containing the billions of pathogens.
5. Infectious hepatitis is caused by ___________
Explanation: The infectious hepatitis is caused by the viruses. The viruses in water also cause the poliomyelitis disease.
6. Amoebic dysentery is caused by ___________
Explanation: Amoebic dysentery is caused by the protozoa present in the drinking water. In this disease, the water content from the body is lost and the person will become weak.
7. Bacteria in water causes ________
d) Chicken guinea
Explanation: Bacteria in water causes the typhoid. This includes the high fever for the person. Bacteria in water also cause the cholera.
8. Helminth in the water causes __________
a) Hook worm
b) Amoebic dysentery
Explanation: Helminth in the water causes the hook worm and also the guinea worm in the person. Amoebic dysentery is caused by the protozoa and cholera and typhoid is caused by the bacteria in water.
9. The ____________ is an important requirement of the aquatic life.
a) Dissolved nitrogen
b) Dissolved chlorine
c) Dissolved oxygen
d) Dissolved methane
Explanation: The dissolved oxygen is an important requirement of the aquatic life. They take oxygen from the water to survive.
10. The optimum value in natural water is ________
Explanation: The optimum value in natural water is about 4-6ppm. Decrease in the quantity of the dissolved water indicates the pollution of water.
11. 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
Explanation: The BOD is the full form biochemical oxygen demand. The amount of oxygen is taken as the measure of the quantity of organic matter is called as the BOD.
12. COD is the short form of the chemical oxygen demand.
Explanation: COD is the short form of the chemical oxygen demand. The total organic content present in water is determined in another parameter called COD.
13. The disappearance of the plants and animals is due to the _________ in water.
a) Nitrogen depletion
b) Chlorine depletion
c) Oxygen depletion
d) Ozone depletion
Explanation: The disappearance of the plants and animals is due to the depletion of the oxygen in the water. Micro organisms mainly bacteria uses the organic matter in water as food.
14. 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
Explanation: The decomposition of the matter produces into carbondioxide and in presence of oxygen. Oxygen is taken from the water.
15. The organic matter present in the water is of __________ types.
Explanation: The organic matter present in the water is of two types. They are biologically oxidisable and biologically inert.
Sanfoundry Global Education & Learning Series – Applied Chemistry.
To practice all areas of Applied Chemistry, here is complete set of 1000+ Multiple Choice Questions and Answers.