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How many sigma and pi-bonds are there in...

How many sigma and pi-bonds are there in the molecule of dicyanoethene `(CN-CH=CH-CN)`?

A

3 sigma and 3 pi

B

5 sigma and 2 pi

C

7 sigma and 5pi

D

2 sigma and 3pi

Text Solution

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The correct Answer is:
C
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OP TANDON-INTRODUCTION TO ORGANIC CHEMISTRY -OBJECTIVE QUESTIONS (Level-A)
  1. Resonance structures of a molecule do not have:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. The variation of the boiling points of the hydrogen halides is in the ...

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  19. The compound that will have a permanent dipole moment among the follow...

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  20. Resonance energy of benzene is about so muh kcal/mol:

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