INSIGHTS STATIC QUIZ 2020 - 21
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Question 1 of 5
1. Question
Consider the following statements.
- The gravitational force of the earth holds the atmosphere around it.
- Earth’s atmosphere is only about 1/100th as dense as Mars’.
Which of the above statements is/are correct?
Correct
Solution: a)
The atmosphere is the thin layer of air that surrounds the earth. The gravitational force of the earth holds the atmosphere around it. It protects us from the harmful rays and scorching heat of the sun.
It consists of a number of gases, dust and water vapour. The changes in the atmosphere produce changes in the weather and climate.
Earth’s gravity is strong enough to hold onto its atmosphere. Mars, for example, is less than half Earth’s size and around one-tenth Earth’s mass. Less mass means less gravitational pull. Mars’ atmosphere is only about 1/100th as dense as Earth’s. And, by the way, it is mostly CO2.
Incorrect
Solution: a)
The atmosphere is the thin layer of air that surrounds the earth. The gravitational force of the earth holds the atmosphere around it. It protects us from the harmful rays and scorching heat of the sun.
It consists of a number of gases, dust and water vapour. The changes in the atmosphere produce changes in the weather and climate.
Earth’s gravity is strong enough to hold onto its atmosphere. Mars, for example, is less than half Earth’s size and around one-tenth Earth’s mass. Less mass means less gravitational pull. Mars’ atmosphere is only about 1/100th as dense as Earth’s. And, by the way, it is mostly CO2.
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Question 2 of 5
2. Question
Lithospheric plates move around very slowly – just a few millimetres each year. What is the reason behind this movement?
Correct
Solution: b)
The lithosphere is broken into a number of plates known as the Lithospheric plates.
The molten magma inside the earth moves in a circular manner. These plates move because of the movement of the molten magma inside the earth.
Incorrect
Solution: b)
The lithosphere is broken into a number of plates known as the Lithospheric plates.
The molten magma inside the earth moves in a circular manner. These plates move because of the movement of the molten magma inside the earth.
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Question 3 of 5
3. Question
Consider the following statements.
- Tornados and cyclones do not co-exist.
- The direction of rotation of a hurricane/cyclone is decided by the direction of earth’s rotation, which is not the case with tornadoes.
- Tornadoes are much smaller in scale than hurricanes.
Which of the above statements is/are correct?
Correct
Solution: c)
A tornado may form within a cyclone. A tornado forms due to the effect of low pressure in the eye of a cyclone.
Tornadoes and hurricanes appear to be similar in their general structure. Both are characterized by extremely strong horizontal winds swirling around the center, strong upward motion dominating the circulation with some downward motion in the center. Hurricanes always rotate counterclockwise in the northern hemisphere (clockwise in the southern), the direction of their rotation being determined by the Earth’s rotation. This is almost always true of tornadoes too, although on rare occasions “anticyclonic” tornadoes spinning in the opposite direction do occur.The most obvious difference between tornadoes and hurricanes is that they have drastically different scales. They form under different circumstances and have different impacts on the environment. Tornadoes are “small-scale circulations”. Hurricanes, on the other hand, are large-scale circulations.
Incorrect
Solution: c)
A tornado may form within a cyclone. A tornado forms due to the effect of low pressure in the eye of a cyclone.
Tornadoes and hurricanes appear to be similar in their general structure. Both are characterized by extremely strong horizontal winds swirling around the center, strong upward motion dominating the circulation with some downward motion in the center. Hurricanes always rotate counterclockwise in the northern hemisphere (clockwise in the southern), the direction of their rotation being determined by the Earth’s rotation. This is almost always true of tornadoes too, although on rare occasions “anticyclonic” tornadoes spinning in the opposite direction do occur.The most obvious difference between tornadoes and hurricanes is that they have drastically different scales. They form under different circumstances and have different impacts on the environment. Tornadoes are “small-scale circulations”. Hurricanes, on the other hand, are large-scale circulations.
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Question 4 of 5
4. Question
Acidification of ocean can have a beneficial effect on
- Photosynthetic algae
- Seagrasses
- Deep sea corals
Select the correct answer code:
Correct
Solution: b)
Ocean acidification is the ongoing decrease in the pH of the Earth’s oceans, caused by the uptake of carbon dioxide (CO2) from the atmosphere.
Ocean acidification is expected to impact ocean species to varying degrees. Photosynthetic algae and seagrasses may benefit from higher CO2 conditions in the ocean, as they require CO2 to live just like plants on land.
On the other hand, studies have shown that a more acidic environment has a dramatic effect on some calcifying species, including oysters, clams, sea urchins, shallow water corals, deep sea corals, and calcareous plankton.
Incorrect
Solution: b)
Ocean acidification is the ongoing decrease in the pH of the Earth’s oceans, caused by the uptake of carbon dioxide (CO2) from the atmosphere.
Ocean acidification is expected to impact ocean species to varying degrees. Photosynthetic algae and seagrasses may benefit from higher CO2 conditions in the ocean, as they require CO2 to live just like plants on land.
On the other hand, studies have shown that a more acidic environment has a dramatic effect on some calcifying species, including oysters, clams, sea urchins, shallow water corals, deep sea corals, and calcareous plankton.
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Question 5 of 5
5. Question
What is the correct sequence of occurrence of the countries in Eastern coast of Africa as one proceeds from South to North?
- Mozambique
- Tanzania
- Kenya
- Somalia
Select the correct answer code:
Correct
Solution: b)
Incorrect
उत्तर: d)
Solution: b)
xENA क्या है?
यह चीनी उद्योग का एक उपोत्पाद है।
यह गन्ने के प्रसंस्करण के अवशेष शीरा से बनती है।
यह मादक पेय बनाने के लिए प्राथमिक कच्चा माल है।
विशेषताएं:
यह रंगहीन फ़ूड-ग्रेड अल्कोहल है जिसमें अशुद्धियाँ नहीं होती हैं।
इसमें एक तटस्थ गंध और स्वाद होता है और आमतौर पर मात्रा के हिसाब से 95 प्रतिशत से अधिक शराब होती है।
ENA के अन्य अनुप्रयोग:
सौंदर्य प्रसाधन और व्यक्तिगत देखभाल उत्पादों जैसे इत्र, प्रसाधन, हेयर स्प्रे आदि के निर्माण में एक आवश्यक घटक है।
प्रिंटिंग उद्योग के लिए कुछ रोगन, पेंट और स्याही के उत्पादन में उपयोग किया जाता है, साथ ही साथ एंटीसेप्टिक्स, ड्रग्स, सिरप, मेडिकेटेड स्प्रे जैसे फार्मास्युटिकल उत्पादों में भी इसका उपयोग किया जाता है।
