Geography
Assertion (A): Barkhans are stationary dunes.
Reason (R): Barkhans are formed transversely with the direction of the winds.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Weathering
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Answer
A is false but R is true.
Explanation — Barkhans are not stationary. They migrate slowly in the direction of the prevailing wind as more sand accumulates on the windward side and slips down the leeward side.
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Related Questions
Which of the following is a static process?
- Erosion
- Weathering
- Denudation
- Solution
Observe the image given below and answer the questions that follow.
Image 1
Image 2
Your cousin brother has sent these images to you after visiting Sahara Desert with his family. He was surprised to see the various types of sand dunes found in the desert. From your geographical point of view identify the images sent by your cousin. Also explain why they have different shape?
One of your friends had visited the Bora cave where she had observed some beautiful features made of limestone inside the cave.
Can you explain the formation process of such limestone topography? Which type of weathering is observed here?
Assertion (A): Deltas are formed along the lower course of the river.
Reason (R): Erosion is the main work of the river in its lower course.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.