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January 20, 2021 - Daily Quiz

1. The jet aircrafts fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation? 
1. There are no clouds or water vapour in the lower stratosphere. 2. There are no vertical winds in the lower stratosphere.Which of the statements given above is/are correct in this context? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
2. Which one of the following processes in the bodies of living organisms is a digestive process? (a) Breakdown of proteins into amino acids (b) Breakdown of glucose into CO2 and H2O (c) Conversion of glucose into glycogen. (d) Conversion of amino acids into proteins.
3. A & B are two towns. A person covers the distance from A to B on cycle at 17kmph and returns to A by a boat running at a uniform speed of 8kmph. What is his average speed for the whole journey? (a) 45 kmph (b) 88 kmph (c) 5 kmph (d) 10.8 kmph 4. The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole? (a) Presence of prominent tropospheric turbulence; and inflow of chlorofluorocarbons (b) Presence of prominent polar front and stratospheric clouds; and inflow of chlorofluorocarbons. (c) Absence of polar front and stratospheric clouds; and inflow of methane and chlorofluorocarbons. (d) Increased temperature at polar region due to global warming 5. Which one of the following elements is essential for the construction of nuclear reactors? (a) Cobalt (b) Nickel (c) Tungsten (d) Zirconium ANSWERS 1. (c)  2. (a) 3. (d) 4. (b) 5. (d) 






POSTED ON 20-01-2021 BY ADMIN
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