AIEEE Exam

One mole of a perfect gas expands isothermally
to ten times its original volume. The change in
entropy is -
(A) 0.1 R (B) 2.303 R
(C) 10.0 R (D) 100.0 R

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AIEEE Other Question

For A → B,
∆H = 4 kcal mol–1, ∆S = 10 cal mol–1 K–1,
Reaction is spontaneous when temperature is _
(A) 400 K (B) 300 K
(C) 500 K (D) none of these
In which of the following molecules N-atom
adopts sp-hybrid state-
(A) CH3NH2 (B) NH2 – NH2
(C) HCN (D) NH3