Organic Chemistry - Some Basic Principles and Techniques questions

1502 published questions with worked solutions.

• The decreasing order of nucleophilicity among the nucleophiles (A) CH₃COO⁻, (B) CH₃O⁻, (C) CN⁻, (D) a tosylate-type ArSO₃⁻ is
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which of the following is the most stable carbocation?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Hyperconjugation is
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which of the following is an electrophile?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• One of the stable resonating forms of methyl vinyl ketone (CH₂=CH–CO–CH₃) places
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Arrange the following carbocations in order of decreasing stability: benzyl (I), allyl (II), methyl (III), vinyl (IV)
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• The polarization of electron density in acrolein (CH₂=CH–CHO) may be written as
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• The inductive effect
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• The stability of a carbonium (carbocation) ion depends upon
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• In which of the following is the resonance effect NOT present?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Consider the carbanions: p-CH₃O–C₆H₄–CH₂⁻ (1), p-O₂N–C₆H₄–CH₂⁻ (2), C₆H₅–CH₂⁻ (3). The correct order of stability is
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which of the following is the most stable radical?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Stability order of C₆H₅–CH₂⁺ (I), CH₂=CH–CH₂⁺ (II), (CH₃)₃C⁺ (III), CH₂=CH⁺ (IV) is
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which of the following is an electrophile?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Stability of the free radicals allyl, benzyl, 3°, 2°, 1°, CH₃ is in the order
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which of the following does not show electromeric effect?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• The most stable carbonium ion among the following is
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Heterolysis of CH₃CH₂CH₃ (propane) preferentially results in the formation of
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• An electrophilic reagent must have
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which order is correct regarding the −I effect of the substituents −NR₂, −OR and −F?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques

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