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Question
Consider the following statements and select the correct answer from the codes given below:
Assertion (A):
New folded mountains are also called Tertiary Mountains.
Reason (R):
They are mainly formed along the constructive plate margins. ,
Codes:
Options:
A .  A is true, but R is false.
B .  Both A and R are true and R is the correct explanation of A.
C .  A is false, but R is true.
D .  Both A and R are true, but R is not the correct explanation of A.
Answer: Option A
Answer: (a)
New folded mountains are also caller Tertiary Mountains. All the old folded mountains were originated before the Tertiary period. The folded mountains of Caledonian and Hercynian mountain-building periods come under this category.
These mountains have been so greatly denuded that they have now become relict folded mountains, for example, Aravallis, Vindhyachal etc.
The Alpine folded mountains of the Tertiary period arc grouped under the category of new folded mountains, for example, Rockies, Andes, Alps, and Himalayas etc.

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