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Question 1 of 5
1. Question
1 pointsWhich of the following is/are the characteristics that the pollutant should possess in order for biomagnification to occur?
1. A pollutant should be long lived.
2. A pollutant should be biologically active.
3. A pollutant should be soluble in fats.
Select the correct answer codeCorrect
Bio magnification stands for Biological Magnification, which means the increase of contaminated substances or toxic chemicals that take place in the food chains. These substances often arise from intoxicated or contaminated environments.
The contaminants include heavy metals namely mercury, arsenic, pesticides such as DDT, and polychlorinated biphenyls (PCBs) compounds which are then taken up by organisms because of the food they consume or the intoxication of their environment.
Pollutant needs to satisfy characteristics like long life, biologically active, soluble in fat etc. to make bio magnification possible.Incorrect
Bio magnification stands for Biological Magnification, which means the increase of contaminated substances or toxic chemicals that take place in the food chains. These substances often arise from intoxicated or contaminated environments.
The contaminants include heavy metals namely mercury, arsenic, pesticides such as DDT, and polychlorinated biphenyls (PCBs) compounds which are then taken up by organisms because of the food they consume or the intoxication of their environment.
Pollutant needs to satisfy characteristics like long life, biologically active, soluble in fat etc. to make bio magnification possible. -
Question 2 of 5
2. Question
1 pointsWhy Chemical oxygen demand (COD) is a better mode used to measure pollution load in water than Biochemical Oxygen Demand (BOD)?
1. COD can measure pollution load in flowing water, which BOD cannot.
2. COD measures pollution load due to non-biodegradable sources, which BOD does not.
Which of the above statements is/are correct?Correct
The level of Dissolved Oxygen is an important indicator of water pollution. Water having DO (dissolved oxygen) content below 8.0 mg/L may be considered as contaminated. Water having DO content below 4.0 mg/L is considered to be highly polluted.
Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD). BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.
Chemical oxygen demand (COD) is a slightly better mode used to measure pollution load in water. It is the measure of oxygen equivalent of the requirement of oxidation of total organic matter (i.e. biodegradable and non-biodegradable) present in water.Incorrect
The level of Dissolved Oxygen is an important indicator of water pollution. Water having DO (dissolved oxygen) content below 8.0 mg/L may be considered as contaminated. Water having DO content below 4.0 mg/L is considered to be highly polluted.
Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD). BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.
Chemical oxygen demand (COD) is a slightly better mode used to measure pollution load in water. It is the measure of oxygen equivalent of the requirement of oxidation of total organic matter (i.e. biodegradable and non-biodegradable) present in water. -
Question 3 of 5
3. Question
1 pointsWhich of the following Tiger Reserves and the States are correctly matched?
1. Buxa Tiger Reserve: West Bengal
2. Dampa Tiger Reserve: Mizoram
3. Palamau Tiger Reserve: Jharkhand
Select the correct answer codeCorrect
Buxa Tiger Reserve, Dampa Tiger Reserve and Palamau Tiger Reserve registered ‘no tigers’ as per the 2018 tiger census. Palamu Tiger Reserve the only tiger reserve in the Jharkhand.
Incorrect
Buxa Tiger Reserve, Dampa Tiger Reserve and Palamau Tiger Reserve registered ‘no tigers’ as per the 2018 tiger census. Palamu Tiger Reserve the only tiger reserve in the Jharkhand.
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Question 4 of 5
4. Question
1 pointsIn which of the following national parks we can find One-Horned Rhinoceros?
1. Kaziranga National Park
2. Orang National park
3. Jaldapara National park
4. Garumara National park
Select the correct codeCorrect
The preferred habitat of an Indian rhinoceros is alluvial flood plains and areas containing tall grasslands along the foothills of the Himalayas. Formerly, extensively distributed in the Gangetic plains, today the species is restricted to small habitats in Indo-Nepal terai and northern West Bengal and Assam. In India, rhinos are mainly found in Kaziranga NP, Pobitara WLS, Orang NP, Manas NP in Assam, Jaldapara NP and Garumara NP in West Bengal and Dudhwa TR in Uttar Pradesh.
Incorrect
The preferred habitat of an Indian rhinoceros is alluvial flood plains and areas containing tall grasslands along the foothills of the Himalayas. Formerly, extensively distributed in the Gangetic plains, today the species is restricted to small habitats in Indo-Nepal terai and northern West Bengal and Assam. In India, rhinos are mainly found in Kaziranga NP, Pobitara WLS, Orang NP, Manas NP in Assam, Jaldapara NP and Garumara NP in West Bengal and Dudhwa TR in Uttar Pradesh.
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Question 5 of 5
5. Question
1 pointsWhich of the following lakes is not designated as Ramsar wetland sites in India?
Correct
Pulicat lake is not designated as Ramsar wetland.
Incorrect
Pulicat lake is not designated as Ramsar wetland.
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