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(A): The mole fraction of argon in air i...

(A): The mole fraction of argon in air is 0.95
(R): The volume percentage of all noble gases in air is equal to unity 

A

Both A & R are true, R is the correct explanation of A

B

Both A & R are true, R is not correct explanation of A

C

A is true, R is false

D

A is false, R is true

Text Solution

Verified by Experts

The correct Answer is:
D
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