21. Which of the following is/are correct in matching the layer of atmosphere and its characteristic ?
I. Troposphere : weather phenomena
II. Stratosphere : ozone layer
III. Ionosphere : radio waves reflected to earth's surface
IV. Mesosphere : Aurorae
I. Troposphere : weather phenomena
II. Stratosphere : ozone layer
III. Ionosphere : radio waves reflected to earth's surface
IV. Mesosphere : Aurorae
22. What is true with regard to Jet Streams?
1. High velocity winds
2. Blow from west to east
3. Blow in upper troposphere near the tropopause
4. Blow in the mesosphere
1. High velocity winds
2. Blow from west to east
3. Blow in upper troposphere near the tropopause
4. Blow in the mesosphere
23. The dry wind 'Santa Ana' blows in ________
24. Which one among the following statements relating to a cyclone is not correct?
25. Which one of the following is a type of planetary wind?
26. Which of the following sequences of clouds in ascending order would one meet 500 metres and above the mean sea level?
27. A sudden fall in the barometric reading indicates ________
28. The amount of actual water vapour of air is known as ________
29. Precipitation takes place when ________
30. Temperate cyclones bring along with them ________
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