(B) X and Y are tautomers
(C) Y is more basic than X
(D) X is more basic than Y
Correct statement(s) are
(a) A and C
(b) C
(c) B and D
(d) B and C
Q2. The correct order of the bond dissociation energies for the indicated C-H bond in the following compounds is
(a) C>B>A
(b) A>B>C
(c) A>C>B
(d) C>A>B
Q3. Molecular orbital interactions involved in the first step of the following reaction is
Q4. In allene, hybridization of the central and terminal carbons respectively are
(b) sp2 and sp3
(c) sp and sp2
(d) sp and sp3
Q5. The mono protonation of adenine in acidic solution mainly occurs at
[GATE 2007]
(a) Position 1
(b) Position 2
(c) Position 3
(d) Position 4 or 5
(a) B>C>A
(b) C>B>A
(c) A>C>B
(d) A>B>C
Q9. The correct order of heat of hydrogenation for the following compounds is
[NET June 2015]
(a) I > II > III > IV
(b) I > III > II > IV
(c) IV > I > III > II
(d) IV > II > I > III
Q10. The correct order of pka values for compounds X, Y and Z is
(a) X > Y > Z
(b) Y > Z > X
(c) Z > X > Y
(d) Y > X > Z