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In which of the following molecules, all atoms are coplanar?

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Important Questions on Organic Chemistry - Some Basic Principles and Techniques

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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>Competition Focus>Q I
Considering the state of hybridisation of carbon atoms, find out among the following which is linear?
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11th CBSE
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Pradeep's New Course CHEMISTRY Vol.II>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>Competition Focus>Q I
The maximum number of carbon atoms arranged linearly in a molecule

CH3-C≡C-CH=CH2

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11th CBSE
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Pradeep's New Course CHEMISTRY Vol.II>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>Competition Focus>Q I
The number of σ and π bonds present in 1,3-butadiene are respectively :
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11th CBSE
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Pradeep's New Course CHEMISTRY Vol.II>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>Competition Focus>Q I
In hexa-1,3-diene-5-yne, the number of C-C σ, C-C π and C-H σ bonds respectively are.
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11th CBSE
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Pradeep's New Course CHEMISTRY Vol.II>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>Competition Focus>Q I

The total number of π bond electrons in the following structure is.

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Pradeep's New Course CHEMISTRY Vol.II>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>Competition Focus>Q I

The enolic form of ethyl acetoacetate as shown below has 

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11th CBSE
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Pradeep's New Course CHEMISTRY Vol.II>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>Competition Focus>Q I

Which one of the following is benzenoid aromatic compound?

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11th CBSE
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Pradeep's New Course CHEMISTRY Vol.II>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>Competition Focus>Q I
Tropolone is an example of