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Resonance occurs due to the :...

Resonance occurs due to the :

A

delocalisation of sigma-electrons

B

delocalisation of pi-electrons

C

migration of H-atoms

D

migration of protons

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The correct Answer is:
B
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OP TANDON-INTRODUCTION TO ORGANIC CHEMISTRY -OBJECTIVE QUESTIONS (Level-A)
  1. The correct order of bond energy is:

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  2. All carbon atoms are sp^(2)-hybridised in:

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  3. Resonance occurs due to the :

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  4. Resonance structures of a molecule do not have:

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  5. Maximum number of sigma bonds that may be present in an isomer of C(4)...

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  6. How many sigma and pi-bonds are there in the molecule of dicyanoethene...

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  7. Which of the following compounds shows evidence of the strongest hydro...

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  8. The hydrogen bond is strongest in which one of the following?

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  9. Increasing order of carbon-carbon bond length for the following is: ...

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  10. The correct order of boiling points of hydrogen halide is:

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  11. Among the following, the correct order of acidity is:

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  12. The state of hybridization of C(2),C(3),C(5) and C(6) of the hydrocarb...

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  13. Types of hybridisation of carbon atoms noted as 1 and 2 are: H(2)C=o...

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  14. Which of the following organic compounds has the same hybridization as...

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  15. In allene (C(3)H(4)), the type (s) of the carbon atom (s) is (are) :

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  16. Examine the following two structures for the anilinium ion and choose ...

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  17. Which of the following molecules has the maximum dipole moment ?

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  18. In the straight-chain hydrocarbon C(8)H(10), the C atoms beginning fro...

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  19. The compound shown is planar and all the C-C bond lengths are the same...

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  20. In hexa-1,3-diene-5-yne, the number of C-C sigma, C-C pi and C-H sigma...

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