19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following is Aromatic? (a) (b) GENERAL ORGANIC CHEMISTRY (c)
Which of the following is aromatic compound? (a) (b) (c) (d)
Assertion: Cyclopentadienyl anion is much more stable than allyl anion. Reason: Cyclopentadienyl anion is aromatic in character.
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…
In which of the following molecule the resonance effect is not present? (a) (b) (c) (d)
Mesomeric effect involves delocalisation of
F COOCH COCl I II III Which of these groups has –I effect?
Negative inductive effect is shown by
Which among the following free radicals is most stable? (a) (b) (c) (d) GENERAL ORGANIC CHEMISTRY
Arrange the following free radicals in order of decreasing stability. Methyl (I), Vinyl (II), Allyl (III), Benzyl (IV)
Assertion: Tertiary carbocations are generally formed more easily than primary carbocations. Reason: Hyperconjugation as well as inductive effect due to additional alkyl groups stabilize tertiary carbocations.
Assertion: Tropylium cation is more stable than Reason: It is stabilized by both resonance effect and inductive effect.
Which carbocation is the most stabilized? (a) (b) GENERAL ORGANIC CHEMISTRY (c) (d)
Which of the following is the most stabilized carbocation? (a) (b) (c) (d)
What is the decreasing order of stability (most stable ->least stable) of the following carbocations?
Rearrangement in this carbocation will produce (a) (b)
Rearrangement in this carbocation will produce (a) GENERAL ORGANIC CHEMISTRY (b)
Which of the following carbocations will be most stable? (a) Ph C (b) CH CH (c) (CH ) CH (d) CH CH CH
Most stable carbonium ion is (a) C H (b) (CH ) C (c) (C H ) C (d) C H CH
Which of the following statements is correct about methyl group?
The correct IUPAC nomenclature for the following alcohol is:
Which one of the following contain isopropyl group ?
Names of some compounds are given. Which one is not the correct in IUPAC system? (a) (b) (c) (d)
The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is
The suffixes for alcohols, aldehyes and ketones according to IUPAC system are respectively :