Organic Chemistry Basics
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Questions and Answers

What type of effect is responsible for the displacement of sigma electrons along a saturated C-2 chain?

  • Inductive effect (correct)
  • Resonance
  • Hyperconjugation
  • Electromeric effect
  • Which of the following groups is an electron-donating group (EDG)?

  • NF2
  • CH3 (correct)
  • NO2
  • Br
  • What is the reason for the stability of the M3+1 carbocation?

  • Due to the presence of an electron-deficient group
  • Due to the presence of a neutral atom
  • Due to the presence of a heavy nucleus (correct)
  • Due to the presence of a light nucleus
  • What type of effect is responsible for the stability of free radicals?

    <p>Hyperconjugation</p> Signup and view all the answers

    What is the term used to describe the structures that are in resonance with each other?

    <p>Canonical structures</p> Signup and view all the answers

    Which of the following is an electron-withdrawing group (EWG)?

    <p>NO2</p> Signup and view all the answers

    What is the effect of the same charge on electron density in a benzene ring?

    <p>decreases electron density</p> Signup and view all the answers

    What is the significance of Huckel's rule in determining the aromaticity of a molecule?

    <p>It determines the planarity of a molecule</p> Signup and view all the answers

    What is the correct order of stability of the following species: carbocation, carbanion, and free radical?

    <p>carbocation &gt; carbanion &gt; free radical</p> Signup and view all the answers

    What is the effect of resonance on the bond energies of a molecule?

    <p>it decreases the bond energies</p> Signup and view all the answers

    What is the correct classification of a molecule that does not obey Huckel's rule?

    <p>non-aromatic</p> Signup and view all the answers

    What is the correct order of electron density in a benzene ring at ortho, meta, and para positions?

    <p>ortho &gt; meta &gt; para</p> Signup and view all the answers

    What is the effect of increasing the distance on electron density in meta-benzene?

    <p>It has no effect on electron density</p> Signup and view all the answers

    What type of resonance is shown in the equation R-I+ M+ EDG?

    <p>Mesomeric resonance</p> Signup and view all the answers

    What is the result of extended conjugation in a compound?

    <p>Stabilization of the compound</p> Signup and view all the answers

    What is the effect of resonance on the stability of a molecule?

    <p>It increases the stability</p> Signup and view all the answers

    What is the type of cross conjugation shown in the diagram CH-CH=CH2?

    <p>Cross conjugation</p> Signup and view all the answers

    What is the effect of an extended conjugation on electron density?

    <p>It has no effect on electron density</p> Signup and view all the answers

    What is the correct order of basic strength of amines?

    <p>1° &gt; 2° &gt; 3°</p> Signup and view all the answers

    Which type of effect is responsible for the weakness of ortho substituted benzoic acids?

    <p>Steric inhibition of resonance</p> Signup and view all the answers

    What is the correct order of acidic strength of carboxylic acids?

    <p>Formic acid &gt; Benzoic acid &gt; Methanoic acid</p> Signup and view all the answers

    What is the correct explanation for the basic strength of amines?

    <p>Delocalization of electron pair</p> Signup and view all the answers

    Which of the following is the strongest acid?

    <p>Formic acid</p> Signup and view all the answers

    What is the correct order of acidic strength of halogen acids?

    <p>HI &gt; HBr &gt; HCl &gt; HF</p> Signup and view all the answers

    Which of the following is a characteristic of ortho substituted benzoic acids?

    <p>They are weaker than their para isomers</p> Signup and view all the answers

    What is the correct explanation for the acidic strength of carboxylic acids?

    <p>Inductive effect</p> Signup and view all the answers

    Which of the following is a characteristic of amines?

    <p>They are always basic</p> Signup and view all the answers

    What is the correct order of basic strength of amines in aqueous phase?

    <p>NH3 &gt; RNH2 &gt; R2NH &gt; R3N</p> Signup and view all the answers

    What is the term for the overlap of a vacant π orbital with an adjacent electron?

    <p>Hyperconjugation</p> Signup and view all the answers

    What is a condition for hyperconjugation to occur?

    <p>The presence of at least one α-hydrogen on the adjacent carbon atom</p> Signup and view all the answers

    What is the effect of hyperconjugation on a carbocation?

    <p>It stabilizes the carbocation</p> Signup and view all the answers

    What is the term for the delocalization of electrons in a planar, cyclic molecule?

    <p>Resonance</p> Signup and view all the answers

    What is the hybridization state of the carbon atom in an alkene?

    <p>sp²</p> Signup and view all the answers

    What is the purpose of the RAFTAAR 25 days = 25 chapters program?

    <p>To prepare for the NEET exam</p> Signup and view all the answers

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