INSIGHTS STATIC QUIZ 2020 - 21
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Question 1 of 5
1. Question
Which of the following are the Ozone depleting substances?
- Hydrobromoflurocarbons (HBFCs)
- Halons
- Carbon tetrachloride
- Methyl chloroform
- Methyl bromide
Select the correct answer code:
Correct
Solution: d)
Ozone depleting substances include:
- chlorofluorocarbons (CFCs)
- hydrochlorofluorocarbons (HCFCs)
- hydrobromoflurocarbons (HBFCs)
- halons
- methyl bromide
- carbon tetrachloride
- methyl chloroform.
Incorrect
Solution: d)
Ozone depleting substances include:
- chlorofluorocarbons (CFCs)
- hydrochlorofluorocarbons (HCFCs)
- hydrobromoflurocarbons (HBFCs)
- halons
- methyl bromide
- carbon tetrachloride
- methyl chloroform.
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Question 2 of 5
2. Question
Which of the following correctly assesses the impact of climate change on agriculture and food security?
- Crop yield may be reduced in most tropical and sub-tropical regions due to decreased water availability.
- Insect or pest incidence may increase leading to greater crop losses.
Which of the above is/are correct?
Correct
Solution: c)
According to IPCC report, climate change would hit the poorest countries severely in terms of reducing the agricultural products.
- Crop yield would be reduced due to decreased water availability, and new or changed insect/pest incidence. This is because higher temperature is conducive for the growth of pests.
- Agriculture will be adversely affected not only by an increase or decrease in the overall amounts of rainfall but also by shifts in the timing of the rainfall.
Incorrect
Solution: c)
According to IPCC report, climate change would hit the poorest countries severely in terms of reducing the agricultural products.
- Crop yield would be reduced due to decreased water availability, and new or changed insect/pest incidence. This is because higher temperature is conducive for the growth of pests.
- Agriculture will be adversely affected not only by an increase or decrease in the overall amounts of rainfall but also by shifts in the timing of the rainfall.
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Question 3 of 5
3. Question
The chemical oxygen demand (COD) test is commonly used to measure which of the following?
Correct
Solution: c)
The amount of oxygen that is required for the chemical oxidation of the organic and inorganic chemicals present in the wastewater by utilising oxidising agents like Potassium permanganate, Potassium dichromate etc. is called as chemical oxygen demand (COD). COD is the oxygen demand that is consumed by both inorganic and organic matter present in the wastewater sample.
Incorrect
Solution: c)
The amount of oxygen that is required for the chemical oxidation of the organic and inorganic chemicals present in the wastewater by utilising oxidising agents like Potassium permanganate, Potassium dichromate etc. is called as chemical oxygen demand (COD). COD is the oxygen demand that is consumed by both inorganic and organic matter present in the wastewater sample.
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Question 4 of 5
4. Question
Which of the following pollutants are directly emitted from motor vehicles?
- Particulate matter
- Un-burnt hydrocarbons
- Ozone
- Carbon monoxide
- Methane
Select the correct code:
Correct
Solution: a)
The following pollutants are emitted from motor vehicles:
Particulate matter (PM).
Un-burnt hydrocarbons.
Nitrogen oxides (NOx).
Carbon monoxide (CO).
Carbon dioxide (CO2).
Sulphur dioxide (SO2).
Methane
While ozone is not emitted directly from automobiles, the unstable compound is formed in the atmosphere through a complex set of chemical reactions involving hydrocarbons, oxides of nitrogen, and sunlight.
Incorrect
Solution: a)
The following pollutants are emitted from motor vehicles:
Particulate matter (PM).
Un-burnt hydrocarbons.
Nitrogen oxides (NOx).
Carbon monoxide (CO).
Carbon dioxide (CO2).
Sulphur dioxide (SO2).
Methane
While ozone is not emitted directly from automobiles, the unstable compound is formed in the atmosphere through a complex set of chemical reactions involving hydrocarbons, oxides of nitrogen, and sunlight.
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Question 5 of 5
5. Question
Which of the following will reduce Global Warming in the short-term?
Correct
Solution: d)
Permafrost contains carbon that was trapped since ages, and its release after melting accelerates global warming.
Rice fields are wetlands that release methane which is a GHG accelerating global warming.
Cattle breeding also release methane.
Suspended particles from volcanic ash, when spread in the atmosphere, reduce solar insolation and help in cooling the earth.
Incorrect
Solution: d)
Permafrost contains carbon that was trapped since ages, and its release after melting accelerates global warming.
Rice fields are wetlands that release methane which is a GHG accelerating global warming.
Cattle breeding also release methane.
Suspended particles from volcanic ash, when spread in the atmosphere, reduce solar insolation and help in cooling the earth.
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