1.

(A) Below 2.2 Kelvin, helium is called super fluid(R) Helium has abnormally low viscosity below 2.2 Kelvin

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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
Both (A) and (R) are false

Answer :A


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