MCQs on Environmental Science 2
MCQs on Environmental Science 2
Q. Choose the correct option from the alternatives given below each question.
101. Environmental science is defined by which of the following statements?
(a) study of the interactions between the environment and humans only
(b) study of the interactions between the environment’s and physical components
(c) study of the interactions between the environment’s and chemical components
(d) study of the interactions between the environment’s physical, chemical, and biological components
Ans: (d) MCQs on Environmental Science 2
102. Among the given engineers, who is known as the first female environmental engineer?
(a) Ellen Swallow Richards
(b) Miss Ellen Henrietta
(c) Catherine Anselm Gleason
(d) Elsie Eaves
Ans: (a)
103. Which of the following is/are types of pollution that affect the environment?
(a) Air pollution
(b) Water pollution
(c) Land pollution
(d) All of the mentioned
Ans: (d)
104. Which of the following statements defines environmental chemistry?
(a) study of chemical reactions that occur in water, air, land, biological habitats, and human activities
(b) study of chemical reactions that occur in water, air, land, and biological habitats only
(c) study of chemical reactions that occur in water, air, and land only
(d) None of the above
Ans: (a)
105. Why carbon dioxide is called a greenhouse gas?
(a) Because they absorb heat
(b) Because they absorb moisture
(c) Because they absorb oxygen
(d) Because they absorb hydrogen
Ans: (a) MCQs on Environmental Science 2
106. Which of the following statements means water vapor?
(a) Water vapor is the gaseous phase of water
(b) Water vapor is the liquid phase of water
(c) Water vapor is the solid phase of water
(d) All of the mentioned
Ans: (a)
107. Which process of water treatment is done to avoid floating debris, branches, trees, or other large particles suspended in water?
(a) Primary sedimentation
(b) Secondary sedimentation
(c) Screening
(d) Aeration
Ans: (c)
108. Which of the following is a renewable source of energy?
(a) Ocean currents
(b) Solar energy
(c) Biomass
(d) All of the above
Ans: (d)
109. Which is the first zone of purification in a sand bed?
(a) Heterotrophic zone
(b) Schmutzdecke zone
(c) Electrolytic zone
(d) Autotrophic zone
Ans: (b)
110. What does the phrase “anthropogenic CO2 emissions” mean?
(a) Natural CO2 emissions
(b) Human-made CO2 emissions
(c) Industrial CO2 emissions
(d) All of the mentioned
Ans: (b)
MCQs on Environmental Science 2
111. Which of the following compounds was earlier produced for the utility of transformers?
(a) PCB
(b) TCDD
(c) PCDF
(d) PDD
Ans: (a)
112. When Environmental Lapse Rate (ELR) is greater than the Adiabatic Lapse Rate (ALR), then which of the following occurs?
(a) Super adiabatic lapse rate
(b) Neutral lapse rate
(c) Adiabatic lapse rate
(d) Sub-adiabatic lapse rate
Ans: (a) MCQs on Environmental Science 2
113. Which of the following is not commonly used as a filter material in the treatment of water?
(a) Garnet sand
(b) Crushed rock
(c) Sand
(d) Anthracite
Ans: (b)
114. In which of the following process earthworms decompose biodegradable solid waste?
(a) Composting
(b) Landfills
(c) Shredding
(d) Vermicomposting
Ans: (d)
115. When the environmental Lapse Rate (ELR) is less than the Adiabatic Lapse Rate (ALR), then which of the following occurs?
(a) Super adiabatic lapse rate
(b) Neutral lapse rate
(c) Adiabatic lapse rate
(d) Sub-adiabatic lapse rate
Ans: (d)
116. Which of the following is NOT a primary pollutant?
(a) Oxygen
(b) Ground-level ozone
(c) Carbon monoxide
(d) Carbon dioxide
Ans: (a) MCQs on Environmental Science 2
117. Which of the following gas is released when alum is added to water?
(a) Ca (OH)3
(b) CO2
(c) Al (OH)3
(d) CaSO4
Ans: (b)
118. Which of the following plants is extremely sensitive toward Sulphur dioxide?
(a) Tomato
(b) Onion
(c) Potato
(d) Corn
Ans: (a)
119. Which of the mentioned devices are used for removing vapor phase/gaseous pollutants?
(a) Thermal oxidizers
(b) Absorption towers
(c) Catalytic converters
(d) All of the mentioned
Ans: (d)
120. Which of the following is biodegradable waste?
(a) Paper
(b) Food waste
(c) Polythene bags
(d) Synthetic fiber
Ans: (b)
MCQs on Environmental Science 2
121. Which of the following water treatment process is done after the filtration of water?
(a) Secondary sedimentation
(b) Flocculation
(c) Primary sedimentation
(d) Disinfection
Ans: (d)
122. Which of the following air pollution control device has maximum efficiency?
(a) Spray tower
(b) Wet cyclonic scrubber
(c) Dynamic precipitator
(d) Electrostatic precipitator
Ans: (d)
123. Which of the following device is used to prevent the clogging of sewer pipes?
(a) Drop manhole
(b) Storm regulators
(c) Flushing tank
(d) Lamp hole
Ans: (c) MCQs on Environmental Science 2
124. Which of the following factor does not affect the dry weather flow?
(a) Infiltration of groundwater
(b) Population growth
(c) Rate of water supply
(d) Temperature conditions
Ans: (d)
125. Which of the following type of pollution is Cultural eutrophication?
(a) Noise pollution
(b) Thermal pollution
(c) Soil pollution
(d) Water pollution
Ans: (d)
126. In the lower layers of the atmosphere, what range of wavelengths of light is predominant?
(a) Between 100-300 nm
(b) Less than 100 nm
(c) Greater than 300 nm
(d) All wavelengths are equally present
Ans: (c)
127. Which of the following radiations of the sun do greenhouse gases trap?
(a) Infrared radiation
(b) UV radiations
(c) Visible radiations
(d) All the radiation
Ans: (a)
128. Which of the following gas is not colorless?
(a) SO3
(b) Pb
(c) NO
(d) O3
Ans: (c)
129. Which of the following is an advantage of a separate water carriage system?
(a) The more uniform character of sewage
(b) Two sets of sewers are used
(c) Get choked easily
(d) Difficult to clean the sewer
Ans: (a)
130. Which of the following flow is also called sanitary sewage?
(a) Nonuniform flow
(b) Uniform flow
(c) Dry weather flow
(d) Storm weather flow
Ans: (c)
MCQs on Environmental Science 2
131. Boiling of water is a _____ method of disinfection.
(a) Physical
(b) Chemical
(c) Mechanical
(d) Electrical
Ans: (a) MCQs on Environmental Science 2
132. Which of the following greenhouse gas is contributed by cattle farming?
(a) Carbon monoxide
(b) Nitrous oxide
(c) Methane
(d) All of the mentioned
Ans: (c)
133. Which water treatment process is done after the filtration of water?
(a) Primary sedimentation
(b) Disinfection
(c) Secondary sedimentation
(d) Flocculation
Ans: (b)
134. Which of the following is wrong regarding disinfection?
(a) It should be readily available at a reasonable cost
(b) Its method of application should be simple
(c) It should render the water toxic for its intended use
(d) It should act as a safeguard against re-contamination
Ans: (c)
135. Sunlight is a ________ method of disinfection.
(a) Physical
(b) Chemical
(c) Mechanical
(d) Electrical
Ans: (a)
136. Which of the following is a chemical method of disinfection?
(a) Disinfection by heat
(b) Disinfection by light
(c) Metal ions
(d) Metal ions, Alkalis, and acids
Ans: (d)
137. The pathogenic bacteria do not last long at a pH ______.
(a) >11
(b) <11
(c) <8
(d) >8
Ans: (a)
138. At what pH, the E-Coli bacteria will die in the water?
(a) 6
(b) 7
(c) 9
(d) >9.5
Ans: (d)
139. The depth of water while using ultraviolet ray treatment for disinfection should be ____.
(a) 35 cm
(b) 46 cm
(c) 28 cm
(d) 10 cm
Ans: (d) MCQs on Environmental Science 2
140. Which method of disinfection is mainly used in rural areas?
(a) Boiling method
(b) Excess lime treatment
(c) Potassium permanganate treatment
(d) Silver treatment
Ans: (c)
MCQs on Environmental Science 2
141. The dose of KMnO4 required for disinfection of water is _______ ppm.
(a) 1-2
(b) 2-3
(c) 3-4
(d) 4-7
Ans: (a)
142. Which minor method of disinfection is effective in the complete sterilization of water?
(a) Boiling method
(b) Excess lime treatment
(c) Silver treatment
(d) Ultraviolet ray treatment
Ans: (a)
143. What is the dose of lime required in the excess lime treatment?
(a) 10-20ppm
(b) 0-10ppm
(c) 5-10ppm
(d) 5-20ppm
Ans: (a) 0 0 0.
MCQs on Environmental Science 2
MCQs on Environmental Science 2
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