Chapter 1: Problem 74
When
Chapter 1: Problem 74
When
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Get started for freeThe strongest H-bonding is observed in (a) \(\mathrm{O}-\mathrm{H}-\mathrm{-} \mathrm{O}\) (b) \(\mathrm{N}-\mathrm{H}-\mathrm{N}\) (c) \(\mathrm{F}-\mathrm{H}-\mathrm{O}\) (d) \(\mathrm{F}-\mathrm{H}-\mathrm{F}\)
Which of the following statements are correct? (a) Singlet carbene is paramagnetic. (b) In the two species \(\mathrm{CN}^{-}\) and \(\mathrm{CO}\), the common feature is that bond order is three and they are isoelectronic. (c) Between \(\mathrm{CH}_{3} \mathrm{Cl}\) and \(\mathrm{CH}_{2} \mathrm{Cl}_{2}\), the former has a higher dipole moment. (d) In the species \(\mathrm{CH}_{3}-\mathrm{C}^{2} \mathrm{H}+\mathrm{HCN} \stackrel{\mathrm{H}_{3}}{\longrightarrow}\) the order of acidity with respect to the positions indicated is \((2)>(1)>(3)\)
The dipole moment of vinyl chloride is lower than that of ethyl chloride. This is because of (a) resonance (b) inductive effect (c) Hyperconjugation (d) unstable nature of vinyl chloride
which of the following statements is not correct? (a) Resonance and tautomerism describe the same phenomenon. (b) A group with a + I effect, attached to a carbocation, increases the stability of the carbocation. (c) Weaker the acid, stronger is its conjugate base. (d) The \(-\mathrm{OH}\) and \(-\mathrm{NH}_{2}\) group attached to an aromatic ring exert \(+\mathrm{M}\) effect.
The number of stereoisomers possible for 2,4 -hexadiene is (a) 4 (b) 2 (c) 3 (d) 6
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