Daily Quiz 20 January 2025
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Question 1 of 5
1. Question
1 pointsWith reference to the Polar Vortex, consider the following statements:
1. It is a large area of low pressure and cold air surrounding both of the Earth’s poles.
2. Unlike the tropospheric polar vortex, the stratospheric polar vortex disappears during the summer and is the strongest during the autumn.
Which of the statements given above is/are correct?Correct
Answer: C
Explanation:
● Statement 1 is correct: The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. The term “vortex” refers to the counter-clockwise flow of air that helps keep the colder air near the Poles.
● Statement 2 is correct: There are two types of polar vortex: tropospheric and stratospheric.
○ The tropospheric polar vortex occurs at the lowest layer of the atmosphere (it extends from the surface up to about 10 km to 15 km) where most weather phenomena occur. The stratospheric polar vortex occurs at around 15 km to 50 km high. Unlike the tropospheric polar vortex, the stratospheric polar vortex disappears during the summer and is the strongest during the autumn.Incorrect
Answer: C
Explanation:
● Statement 1 is correct: The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. The term “vortex” refers to the counter-clockwise flow of air that helps keep the colder air near the Poles.
● Statement 2 is correct: There are two types of polar vortex: tropospheric and stratospheric.
○ The tropospheric polar vortex occurs at the lowest layer of the atmosphere (it extends from the surface up to about 10 km to 15 km) where most weather phenomena occur. The stratospheric polar vortex occurs at around 15 km to 50 km high. Unlike the tropospheric polar vortex, the stratospheric polar vortex disappears during the summer and is the strongest during the autumn. -
Question 2 of 5
2. Question
1 pointsWith reference to hybrid crops, consider the following statements:
- Seed saved from hybrid varieties will not breed true in the next generation.
- A critical requirement of hybrid production is that the parent varieties must not be identical.
- At present only wheat and rice hybrid cereal crops are available in India.
How many of the above statements are correct?
Correct
Answer: B
Explanation:
- Statements 1 correct: Hybrid seeds are an improvement over open pollinated seeds in terms of qualities. Hybrid varieties are those produced from the crossing of two different inbred lines. Seed saved from hybrid varieties will not breed true in the next generation.
- Statement 2 is correct: Hybrid seeds are developed by the hybridization or crossing of parent lines that are ‘pure lines’ produced through inbreeding. A critical requirement of hybrid production is that the parents be unidentical. It is this divergence of genotypes of the parents that expresses in hybrid vigour, or heterosis in the F 1 hybrid seed. The emphasis for development of hybrid varieties has been in cross-pollinated crops such as maize, primarily because its male flower~(tassels) and female flowers (incipient ears) are separate and easy to handle, thus proving economical for the production of hybrid seed
Statement 3 is not correct: Hybrid varieties of many cereal crops including wheat in barley, maize, pulses and oilseeds are available.
Incorrect
Answer: B
Explanation:
- Statements 1 correct: Hybrid seeds are an improvement over open pollinated seeds in terms of qualities. Hybrid varieties are those produced from the crossing of two different inbred lines. Seed saved from hybrid varieties will not breed true in the next generation.
- Statement 2 is correct: Hybrid seeds are developed by the hybridization or crossing of parent lines that are ‘pure lines’ produced through inbreeding. A critical requirement of hybrid production is that the parents be unidentical. It is this divergence of genotypes of the parents that expresses in hybrid vigour, or heterosis in the F 1 hybrid seed. The emphasis for development of hybrid varieties has been in cross-pollinated crops such as maize, primarily because its male flower~(tassels) and female flowers (incipient ears) are separate and easy to handle, thus proving economical for the production of hybrid seed
Statement 3 is not correct: Hybrid varieties of many cereal crops including wheat in barley, maize, pulses and oilseeds are available.
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Question 3 of 5
3. Question
1 pointsConsider the following statements regarding fluoride contamination in water:
- Excessive fluoride levels in drinking water can lead to dental and skeletal fluorosis.
- Fluoride contamination in groundwater is primarily caused by industrial activities and is not naturally occurring.
Which of the statements given above is/are correct?
Correct
Answer: A
Explanation:
- Fluoride is a chemical element that is found most frequently in groundwater and has become one of the most important toxicological environmental hazards globally. High fluoride occurrence in groundwaters is expected from sodium bicarbonate-type water, which is calcium deficient.
- Statement 1 is correct: A high fluoride concentration in drinking water causes skeletal fluorosis and long-term kidney, brain, thyroid, and liver damages.
Statement 2 is not correct: Natural resources and manufactured-generated industrial pollutants are the primary sources of excessive fluoride in the environment. Fluoride is naturally added to ground and surface water by fluoride-rich natural rocks and soil that water interacts with. Because of the deterioration or leaching of fluoride-bearing rocks during the percolation of water into the earth, groundwater becomes more contaminated than surface water.
Incorrect
Answer: A
Explanation:
- Fluoride is a chemical element that is found most frequently in groundwater and has become one of the most important toxicological environmental hazards globally. High fluoride occurrence in groundwaters is expected from sodium bicarbonate-type water, which is calcium deficient.
- Statement 1 is correct: A high fluoride concentration in drinking water causes skeletal fluorosis and long-term kidney, brain, thyroid, and liver damages.
Statement 2 is not correct: Natural resources and manufactured-generated industrial pollutants are the primary sources of excessive fluoride in the environment. Fluoride is naturally added to ground and surface water by fluoride-rich natural rocks and soil that water interacts with. Because of the deterioration or leaching of fluoride-bearing rocks during the percolation of water into the earth, groundwater becomes more contaminated than surface water.
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Question 4 of 5
4. Question
1 pointsConsider the following statements:
- Due to iron deficiency, the human body cannot produce enough hemoglobin in the Red Blood Cells that enables them to carry oxygen.
- Anemia Mukt Bharat strategy is implemented to reduce anaemia among all the citizens of India.
Which of the statements given above is/are correct?
Correct
Answer: A
Explanation:
- Statement 1 is correct: Iron deficiency anemia is a common type of anemia — a condition in which blood lacks adequate healthy red blood cells. Red blood cells carry oxygen to the body’s tissues.
- As the name implies, iron deficiency anemia is due to insufficient iron. Without enough iron, your body can’t produce enough of a substance in red blood cells that enables them to carry oxygen (hemoglobin). As a result, iron deficiency anemia may leave you tired and short of breath.
Statement 2 is not correct: Anemia Mukt Bharat strategy is implemented to reduce anaemia among six beneficiaries age group – children (6-59 months), children (5-9 years), adolescents (10-19 years), pregnant and lactating women and in women of reproductive age group (15-49 years) in life cycle approach through implementation of six interventions via robust institutional mechanism. It is not for all the citizens of India.
Incorrect
Answer: A
Explanation:
- Statement 1 is correct: Iron deficiency anemia is a common type of anemia — a condition in which blood lacks adequate healthy red blood cells. Red blood cells carry oxygen to the body’s tissues.
- As the name implies, iron deficiency anemia is due to insufficient iron. Without enough iron, your body can’t produce enough of a substance in red blood cells that enables them to carry oxygen (hemoglobin). As a result, iron deficiency anemia may leave you tired and short of breath.
Statement 2 is not correct: Anemia Mukt Bharat strategy is implemented to reduce anaemia among six beneficiaries age group – children (6-59 months), children (5-9 years), adolescents (10-19 years), pregnant and lactating women and in women of reproductive age group (15-49 years) in life cycle approach through implementation of six interventions via robust institutional mechanism. It is not for all the citizens of India.
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Question 5 of 5
5. Question
1 pointsWhich one of the following best describes a Battery Energy Storage System (BESS)?
Correct
Answer: A
Explanation:
- Option A is correct: Battery storage, or battery energy storage systems (BESS), are devices that enable energy from renewables, like solar and wind, to be stored and then released when the power is needed most.
India’s first commercial utility-scale battery energy storage system (BESS) is expected to go live in Delhi in March this year.
Incorrect
Answer: A
Explanation:
- Option A is correct: Battery storage, or battery energy storage systems (BESS), are devices that enable energy from renewables, like solar and wind, to be stored and then released when the power is needed most.
India’s first commercial utility-scale battery energy storage system (BESS) is expected to go live in Delhi in March this year.
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