Q. The instrument used for finding out wind-direction is ________

Answer

Correct Answer : Wind vane

Q. The instrument used for measuring relative humidity in air is ________

Answer

Correct Answer : Hygrometer

Q. The intensity of insolation depends on

Answer

Correct Answer : Latitude

Q. The January isotherm taken as a basis for dividing India into tropical and subtropical zones is ________

Answer

Correct Answer : 15° C

Q. 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?

Answer

Correct Answer : Both 1 and 2

Q. The layer of atmosphere which reflects radio waves is

Answer

Correct Answer : Ionosphere

Q. The layer of the atmosphere which provides ideal conditions for flying on jet aeroplanes is ________

Answer

Correct Answer : Stratosphere

Q. The monsoon has well-developed cycle in ________

Answer

Correct Answer : South and South East Asia

Q. The most abundant element in the Earth’s atmosphere is

Answer

Correct Answer : Nitrogen

Q. The most important factor in thunderstorms development is ________

Answer

Correct Answer : Atmospheric instability