JAM Chemistry Question Paper 2019 Download Free PDF
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JAM Chemistry Question Paper 2019
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Q.1. Q.4 For three non-coplanar vectors a, b and c, the expression 𝐚 ∙ (𝐛 × 𝐜) can be written as
(A) (𝐚 × 𝐛) ∙ 𝐜
(B) (𝐚 × 𝐛) ∙ (𝐚 × 𝐜)
(C) (𝐚 ∙ 𝐛) × (𝐚 ∙ 𝐜)
(D) (𝐚 ∙ 𝐛) × 𝐜
Q.2. The thermodynamic criterion for spontaneity of a process in a system under constant
volume and temperature and in the absence of any work other than expansion work (if any)
(A) change in entropy is positive
(B) change in enthalpy is negative
(C) change in Helmholtz free energy is negative
(D) change in Gibbs free energy is negative
Q.3. The correct option for the metal ion present in the active site of myoglobin, hemocyanin and vitamin B12, respectively, is
(A) iron, iron and zinc
(B) molybdenum, iron and copper
(C) iron, copper and cobalt
(D) molybdenum, copper and cobalt
Q.4. For a reaction of the type A + B → Products, the unit of the rate constant is mol L–1 s–1®For a reaction of the type A + B. The overall order of the reaction is
Q.5. The correct statement regarding the observed magnetic properties of NO, O2, B2, and C2 in their ground state is
(A) NO, B2, and C2 are paramagnetic
(B) B2, O2 and NO are paramagnetic
(C) O2, C2 and NO are paramagnetic
(D) O2, B2 and C2 are paramagnetic
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