Daily Prelims Quiz 7 Sept 2021
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- Question 1 of 5
1. Question
2 pointsCategory: World GeographyWhich one of the following reflects back more sunlight as compared to other three? (UPSC-2010)
CorrectAlbedo is a non-dimensional, unitless quantity that indicates how well a surface reflects solar energy. Albedo varies between 0 and 1. Albedo commonly refers to the “whiteness” of a surface, with 0 meaning black and 1 meaning white. A value of 0 means the surface is a “perfect absorber” that absorbs all incoming energy. Absorbed solar energy can be used to heat the surface or, when sea ice is present, melt the surface. A value of 1 means the surface is a “perfect reflector” that reflects all incoming energy. Snow reflects more of the sun’s energy because it is white and more ‘reflective’ than the darker ground surface beneath. In fact, snow is the most reflective natural surface on Earth.
IncorrectAlbedo is a non-dimensional, unitless quantity that indicates how well a surface reflects solar energy. Albedo varies between 0 and 1. Albedo commonly refers to the “whiteness” of a surface, with 0 meaning black and 1 meaning white. A value of 0 means the surface is a “perfect absorber” that absorbs all incoming energy. Absorbed solar energy can be used to heat the surface or, when sea ice is present, melt the surface. A value of 1 means the surface is a “perfect reflector” that reflects all incoming energy. Snow reflects more of the sun’s energy because it is white and more ‘reflective’ than the darker ground surface beneath. In fact, snow is the most reflective natural surface on Earth.
- Question 2 of 5
2. Question
2 pointsCategory: World GeographyWhich among the following has the world’s largest reserves of Uranium? (UPSC-2009)
CorrectKazakhstan produces the largest share of uranium from mines (42% of world supply from mines in 2019), followed by Canada (13%) and Australia (12%). But highest reserves are found in following countries:
IncorrectKazakhstan produces the largest share of uranium from mines (42% of world supply from mines in 2019), followed by Canada (13%) and Australia (12%). But highest reserves are found in following countries:
- Question 3 of 5
3. Question
2 pointsCategory: World GeographyIn which one of the following is Malta located?
Correct
Incorrect - Question 4 of 5
4. Question
2 pointsCategory: World GeographyThrough which one of the following Straits, does a tunnel connect the United Kingdom and France?
CorrectThe Strait of Dover or Dover Strait, historically known as the Dover Narrows, is the strait at the narrowest part of the English Channel, marking the boundary between the Channel and the North Sea, separating Great Britain from continental Europe.
IncorrectThe Strait of Dover or Dover Strait, historically known as the Dover Narrows, is the strait at the narrowest part of the English Channel, marking the boundary between the Channel and the North Sea, separating Great Britain from continental Europe.
- Question 5 of 5
5. Question
2 pointsCategory: World GeographyWhat is the approximate mean velocity with which the Earth moves round the Sun in its orbit?
CorrectIncorrect
