Chemistry-76.Phase-3 -4-Subjective-Solutions

FACULTY TRAINING TEST PHASE – III & IV CHEMISTRY SOLUTIONS 1. a) b) 2. A = B = C = D = E = 3. a) b) 4. a) The addition of an electrophile to an alkyne proceeds through an vinyl carbocationic intermediate which makes the Ea of the reaction very high. b) In we are forming a C – H bond and in the other case we will be forming a C – Br bond. Since C – H bond is more stronger the C – Br, more energy will be released in that process and the system will be stabilised to a greater extent. 5. A = B = C = D = E = F = 6. a) A = B = C = b) D = E = F = c) G = H = I = 7. a) b) i) ii) 8. a) Two asymmetric carbon atoms are created. b) A = B = C = D = 9. i) A = B = ii) 10. A = B = C = D = E = F = 6

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