UPSC CSE Prelims
Question 29
Consider the following information:
| Region | Name of the mountain range | Type of mountain | |
|---|---|---|---|
| 1. | Central Asia | Vosges | Fold mountain |
| 2. | Europe | Alps | Block mountain |
| 3. | North America | Appalachians | Fold mountain |
| 4. | South America | Andes | Fold mountain |
In how many of the above rows is the given information correctly matched?
View correct answer and explanation
Correct answer: B
Correct Option: B (Only two)
Explanation: The Appalachians and Andes are fold-mountain systems in North and South America. The Vosges are European block mountains and the Alps are fold mountains.
Statement / Pair / Item-wise Analysis:
1. Incorrect/False - The Vosges are in Europe, mainly France, and are fault-block mountains.
2. Incorrect/False - The European Alps are young fold mountains, not block mountains.
3. Correct/True - The Appalachians in North America are old fold mountains.
4. Correct/True - The Andes are fold mountains along western South America.
Option-wise Analysis:
A. Incorrect-it counts 1, but items 3, 4 qualify, giving 2.
B. Correct-exactly 2 of the 4 listed items satisfy the condition.
C. Incorrect-it counts 3, but only 2 qualify; item(s) 1, 2 do not.
D. Incorrect-it counts 4, but only 2 qualify; item(s) 1, 2 do not.