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The number of sigma and pi-bonds in but-...

The number of `sigma` and `pi`-bonds in but-1-en-3-yne are

A

5 sigma and 5 pi

B

7 sigma and 3pi

C

8 sigma and 2 pi

D

6 sigma and 4pi

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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 C-H bond distance is the longest in:

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  2. The enolic form of acetone contains

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  3. The number of sigma and pi-bonds in but-1-en-3-yne are

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  4. How many sigma and pi bonds are there in tetracyano ethylene molecule?

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  5. Number of sigma and pi bonds in benzophenone is:

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  6. The compound buta-1,2 diene has:

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  7. In the compound HC-=C-overset(" "CH(3))overset(|)(C)=CH(2), the hybrid...

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  8. The CI - C - CI angle in 1, 1, 2, 2, tetrachloroethone and tetrachloro...

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  9. Which of the following molecules does not have net dipole moment?

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  10. Dipole moment of is 1.5D. The dipole moment of

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  11. Among the following, the molecule with the highest dipole moment is :

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  12. Arrange the following molecules in the correct order of decreasing C-C...

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  13. The bond energy (in kcal mol^(-1)) of a C -c single bond is approximat...

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  14. Which of the following pairs have identical bond order?

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  15. The correct order of bond energy is:

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

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  17. Resonance occurs due to the :

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  18. Resonance structures of a molecule do not have:

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

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

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