Explore topic-wise MCQs in Applied Chemistry.

This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

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
Answer» B. Oxygen and nitrogen
Discussion
2.

COD is the short form of the chemical oxygen demand.

A. True
B. False
Answer» B. False
Discussion
3.

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
Answer» B. Biological oxygen demand
Discussion
4.

The optimum value in natural water is ________

A. 2-4ppm
B. 4-7ppm
C. 4-6ppm
D. 2-7ppm
Answer» D. 2-7ppm
Discussion
5.

The ____________ is an important requirement of the aquatic life.

A. Dissolved nitrogen
B. Dissolved chlorine
C. Dissolved oxygen
D. Dissolved methane
Answer» D. Dissolved methane
Discussion
6.

Helminth in the water causes __________

A. Hook worm
B. Amoebic dysentery
C. Cholera
D. Typhoid
Answer» B. Amoebic dysentery
Discussion
7.

Bacteria and micro organisms present in the water will cause _________ in human and animals.

A. Indigestion
B. Intestinal tract
C. Brain tumour
D. Cancer
Answer» C. Brain tumour
Discussion
8.

THE______________IS_AN_IMPORTANT_REQUIREMENT_OF_THE_AQUATIC_LIFE.?$

A. Dissolved nitrogen
B. Dissolved chlorine
C. Dissolved oxygen
D. Dissolved methane
Answer» D. Dissolved methane
Discussion
9.

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
Answer» B. Biological oxygen demand
Discussion
10.

The_optimum_value_in_natural_water_is_________$

A. 2-4ppm
B. 4-7ppm
C. 4-6ppm
D. 2-7ppm
Answer» D. 2-7ppm
Discussion
11.

The organic matter present in the water is of __________ types.

A. Two
B. Three
C. Four
D. Five
Answer» B. Three
Discussion
12.

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
Answer» B. Oxygen and nitrogen
Discussion
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
Answer» D. Ozone depletion
Discussion
14.

COD is the short form of the chemical oxygen demand.

A. True
B. False
Answer» B. False
Discussion
15.

Helminth in the water causes _________?

A. Hook worm
B. Amoebic dysentery
C. Cholera
D. Typhoid
Answer» B. Amoebic dysentery
Discussion
16.

Bacteria in water causes ________

A. Malaria
B. Typhoid
C. Dengue
D. Chicken guinea
Answer» C. Dengue
Discussion
17.

Amoebic dysentery is caused by ___________

A. Viruses
B. Bacteria
C. Helminth
D. Protozoa
Answer» E.
Discussion
18.

Infectious hepatitis is caused by ___________

A. Bacteria
B. Viruses
C. Protozoa
D. Helminth
Answer» C. Protozoa
Discussion
19.

Bacteria and micro organisms present in the water will cause _________ in human and animals.

A. Indigestion
B. Intestinal tract
C. Brain tumour
D. Cancer
Answer» C. Brain tumour
Discussion
20.

Waste water released from _________ are not the sources of bacteria.

A. Sanitaria
B. Municipalities
C. Tanning
D. Industries
Answer» E.
Discussion
21.

Fishes can store more quantity of ___________ in their bodies.

A. Mercury
B. Bismuth
C. Palladium
D. Chlorine
Answer» B. Bismuth
Discussion
22.

___________ poisoning water in Japan is from fishes.

A. Bismuth
B. Arsenic
C. Antimony
D. Palladium
Answer» C. Antimony
Discussion