List of top Chemistry Questions on electron displacement effects

Which of the following is the most stable cation?
Which of the following species exhibits \(+I\) effect?
Which of the following effects involves the delocalization of pi electrons in a molecule?
Which of the following statements regarding different electronic effects in organic reactions is TRUE ?
Identify the overlapping orbitals involved in hyperconjugation from following.
Which of the following exhibits \(-\)I effect?
The delocalization of electrons due to overlap between p-orbital and sigma bond is called.
Compare the relative stability of given carbocations.
\(\text{CH}_{3}\text{-}\text{C}^{+}\text{-(CH}_{3})_{2}\) (I) \(\text{CH}_{3}\text{-}\text{C}^{+}\text{H-CH}_{3}\) (II) \(\text{CH}_{3}\text{-}\text{C}^{+}\text{H}_{2}\) (III)
The following carbocation is stabilized by the interaction of the empty \(p\) orbital with
Increasing order of electron withdrawing power of following functional groups is:
a. -CN
b. -COOH
c. -NO₂
d. -I
Three different reactions were started with identical initial concentration of reactants. Which of the following statement is correct regarding the given graph showing variation of reactant concentration with time?
From the following list, identify the number of substituents which exert \(+R\) effect when present on benzene ring \[ -Cl,\quad -COCH_3,\quad -NHC_2H_5,\quad -OCH_3,\quad -NHCOCH_3,\quad -COOCH_3 \]
Find the number of hyperconjugation structures in the isopropyl carbocation.
Match List I with List II
List IList II
(A). Inductive effect(I). Delocalization of \(π\) electrons
(B). Hyper-conjugation(II). Displacement of \(π\) electrons
(C). Resonance effect(III). Delocalization of \(σ\) electrons
(IV). Displacement of \(σ\) electrons

Choose the correct answer from the options given below:
Among the following, the most stable carbocation is
Which of the following statements are TRUE?
(I) Inductive effect operates through the sigma bond
(II) Resonance effect operates through the pi bond
(III) Inductive effects operate through the pi bond
(IV) Resonance effect operates through the sigma bond
નીચેનો કાર્બોકેશન ખાલી p ઓર્બિટલની આ ક્રિયાપ્રતિક્રિયા દ્વારા સ્થિર થાય છે:
Consider the following statements and select the correct option: Statement-I : \(CH_3^-\) lacks hyperconjugative stability. Statement-II : There is no vacant \(p\)-orbital in \(CH_3^-\) and as such it cannot participate in hyperconjugation.
Select the option in which all the given functional groups exhibit \(+R\) effect.
Among the given resonating structures of molecules negative mesomeric effect is represented by:
Match the following:
Arrange carbocations in increasing order of stability.
The correct increasing order of the acid strength of benzoic acid (I), 4-nitrobenzoic acid (II), 3,4-dinitrobenzoic acid (III) and 4-methoxybenzoic acid (IV) is
Which of the following is an electron donating group?
No two electrons in an atom can have the same set of quantum numbers. This is known as: