19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following has minimum-I-effect?
Which of the groups has highest + I effect?
In the following benzyl/allyl system (R is alkyl group) decreasing order of inductive effect is
III II I CH CH CH C CH Which of these groups has +I effect ?
Polarisation of electrons in acrolein may be written as (a) (b) (c) (d)
Electromeric effect is
Resonance structure of a molecules should have
Which of the following statements is true about this molecule ?
Among these compounds, which one has shortest C—Cl bond?
The stability order of these canonical structures is
GENERAL ORGANIC CHEMISTRY The most stable canonical structure among these is
The most unlikely representation of resonance structure of p–nitrophenoxide ion is: (a) (b) (c) (d)
Which of the following is least stable?
Mesomeric effect involves delocalisation of
In which of the following molecule the resonance effect is not present? (a) (b) (c) (d)
Which among the following statements are true with respect to electronic displacement in a covalent bond ? (1) Inductive effect operates through pi bond (2) Resonance effect operates through sigma bond (3) Inductive e…
Assertion: Cyclopentadienyl anion is much more stable than allyl anion. Reason: Cyclopentadienyl anion is aromatic in character.
Which of the following is aromatic compound? (a) (b) (c) (d)
Which of the following is Aromatic? (a) (b) GENERAL ORGANIC CHEMISTRY (c)
Which of the following is non-Aromatic? (a) (b) (c)
Which of the following is aromatic? (a) (b) (c) (d)
Which of the following is Anti-aromatic? (a) (b) (c)
Which of the following is aromatic?
Which of the following is aromatic? GENERAL ORGANIC CHEMISTRY
Which of the following carbanion is aromatic? (a) (b) (c) (d)