Organic Chemistry - Some Basic Principles and Techniques questions

1502 published questions with worked solutions.

• Inductive effect involves
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• On exciting Cl₂ molecules by UV light, we get
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which of the following resonating structures of 1-methoxy-1,3-butadiene is least stable?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which of the following species does not exert a resonance effect?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which kind of fission is favoured by sunlight?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Hyperconjugation involves overlap of the following orbitals
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• The correct order of increasing basicity of the given conjugate bases (R = CH₃) is
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• +I effect is shown by
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Orbital interaction between the σ-bonds of a substituent group and a neighbouring π-orbital is known as
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• The total number of contributing structures showing hyperconjugation (involving C–H bonds) for the carbocation shown (an...
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Consider the following carbocations: (I) C₆H₅CH₂⁺, (II) C₆H₅CH₂CH₂⁺, (III) C₆H₅ĊHCH₃ (as cation), (IV) C₆H₅Ċ(CH₃)₂ (as cation)....
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which one of the following carbanions is the least stable?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• A hydride shift from C-2 will give the most stable resonance-stabilized carbocation as
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which of the following is not true for carbanions?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which chlorine atom bears the greatest partial negative charge (is "most electronegative" in effect) in the series of...
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which of the following intermediates has a complete octet around the carbon atom?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Most stable carbonium ion is
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Which one of the nitrogen atoms (I, II, III) in semicarbazide, H₂N–NH–CO–NH₂, is most nucleophilic?
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• Reaction of phenol with chloroform/sodium hydroxide to give o-hydroxybenzaldehyde (Reimer–Tiemann reaction) involves the...
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques
• The increasing order of stability of the free radicals (CH₃)₂ĊH, (CH₃)₃Ċ, (C₆H₅)₂ĊH, (C₆H₅)₃Ċ is
  JEE Main · Chemistry · Organic Chemistry - Some Basic Principles and Techniques

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