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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317095 Hybridisation of the underlined carbon in the given species $C H_{3} - C H_{2} - \underset{―}{C} H_{2}^{-}$ is

1

s p^{2}

2

s p^{3}

3

sp

4 No hybridisation

Explanation:

In the given species, for underlined carbon b.p $= 3, 1 . p = 1$ .
Thus $n = 4, i . e . s p^{3}$ .

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317096 Assertion :
Greater the $s$ -character of the hybrid orbital, the smaller is its size.
Reason :
${sp}^{3}$ orbital forms the longest and $sp$ orbital forms the shortest bond.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

The $s$ -orbitals are closer to the nucleus than the $p$ -orbitals. Thus, greater the $s$ -character of the hybrid orbital, the smaller is its size.Therefore, the order of the size of the three hybrid orbitals is ${sp}^{3} > {sp}^{2} > sp$ .Accordingly, $sp$ orbital forms shortest and ${sp}^{3}$ orbital forms longest bonds with other atoms. So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317097 In the following molecule, how many carbon atoms are aranged linearly:
supporting img

1 2

2 3

3 4

4 5

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317098 In which of the following species underlined carbon is having ${sp}^{3}$ hybridisation?

1

C H_{3} \underset{―}{C} O O H

2

{CH}_{3} \underset{―}{C} H_{2} OH

3

{CH}_{3} \underset{―}{C} {OCH}_{3}

4

{CH}_{2} = \underset{―}{C} H - {CH}_{3}

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317099 Assertion :
Each carbon in ethylene molecule is ${sp}^{2}$ hybridised.
Reason :
The $H - C - H$ bond angle in ethylene molecule is $120^{\circ}$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

Each carbon in an ethylene molecule is ${sp}^{2}$ hybridized. The reason is also true, as the $H - C - H$ bond angle in ethylene is indeed $120^{\circ}$ , characteristic of ${sp}^{2}$ hybridization. But it is not the correct explanation. So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317095 Hybridisation of the underlined carbon in the given species $C H_{3} - C H_{2} - \underset{―}{C} H_{2}^{-}$ is

1

s p^{2}

2

s p^{3}

3

sp

4 No hybridisation

Explanation:

In the given species, for underlined carbon b.p $= 3, 1 . p = 1$ .
Thus $n = 4, i . e . s p^{3}$ .

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317096 Assertion :
Greater the $s$ -character of the hybrid orbital, the smaller is its size.
Reason :
${sp}^{3}$ orbital forms the longest and $sp$ orbital forms the shortest bond.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

The $s$ -orbitals are closer to the nucleus than the $p$ -orbitals. Thus, greater the $s$ -character of the hybrid orbital, the smaller is its size.Therefore, the order of the size of the three hybrid orbitals is ${sp}^{3} > {sp}^{2} > sp$ .Accordingly, $sp$ orbital forms shortest and ${sp}^{3}$ orbital forms longest bonds with other atoms. So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317097 In the following molecule, how many carbon atoms are aranged linearly:
supporting img

1 2

2 3

3 4

4 5

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317098 In which of the following species underlined carbon is having ${sp}^{3}$ hybridisation?

1

C H_{3} \underset{―}{C} O O H

2

{CH}_{3} \underset{―}{C} H_{2} OH

3

{CH}_{3} \underset{―}{C} {OCH}_{3}

4

{CH}_{2} = \underset{―}{C} H - {CH}_{3}

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317099 Assertion :
Each carbon in ethylene molecule is ${sp}^{2}$ hybridised.
Reason :
The $H - C - H$ bond angle in ethylene molecule is $120^{\circ}$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

Each carbon in an ethylene molecule is ${sp}^{2}$ hybridized. The reason is also true, as the $H - C - H$ bond angle in ethylene is indeed $120^{\circ}$ , characteristic of ${sp}^{2}$ hybridization. But it is not the correct explanation. So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317095 Hybridisation of the underlined carbon in the given species $C H_{3} - C H_{2} - \underset{―}{C} H_{2}^{-}$ is

1

s p^{2}

2

s p^{3}

3

sp

4 No hybridisation

Explanation:

In the given species, for underlined carbon b.p $= 3, 1 . p = 1$ .
Thus $n = 4, i . e . s p^{3}$ .

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317096 Assertion :
Greater the $s$ -character of the hybrid orbital, the smaller is its size.
Reason :
${sp}^{3}$ orbital forms the longest and $sp$ orbital forms the shortest bond.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

The $s$ -orbitals are closer to the nucleus than the $p$ -orbitals. Thus, greater the $s$ -character of the hybrid orbital, the smaller is its size.Therefore, the order of the size of the three hybrid orbitals is ${sp}^{3} > {sp}^{2} > sp$ .Accordingly, $sp$ orbital forms shortest and ${sp}^{3}$ orbital forms longest bonds with other atoms. So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317097 In the following molecule, how many carbon atoms are aranged linearly:
supporting img

1 2

2 3

3 4

4 5

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317098 In which of the following species underlined carbon is having ${sp}^{3}$ hybridisation?

1

C H_{3} \underset{―}{C} O O H

2

{CH}_{3} \underset{―}{C} H_{2} OH

3

{CH}_{3} \underset{―}{C} {OCH}_{3}

4

{CH}_{2} = \underset{―}{C} H - {CH}_{3}

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317099 Assertion :
Each carbon in ethylene molecule is ${sp}^{2}$ hybridised.
Reason :
The $H - C - H$ bond angle in ethylene molecule is $120^{\circ}$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

Each carbon in an ethylene molecule is ${sp}^{2}$ hybridized. The reason is also true, as the $H - C - H$ bond angle in ethylene is indeed $120^{\circ}$ , characteristic of ${sp}^{2}$ hybridization. But it is not the correct explanation. So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317095 Hybridisation of the underlined carbon in the given species $C H_{3} - C H_{2} - \underset{―}{C} H_{2}^{-}$ is

1

s p^{2}

2

s p^{3}

3

sp

4 No hybridisation

Explanation:

In the given species, for underlined carbon b.p $= 3, 1 . p = 1$ .
Thus $n = 4, i . e . s p^{3}$ .

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317096 Assertion :
Greater the $s$ -character of the hybrid orbital, the smaller is its size.
Reason :
${sp}^{3}$ orbital forms the longest and $sp$ orbital forms the shortest bond.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

The $s$ -orbitals are closer to the nucleus than the $p$ -orbitals. Thus, greater the $s$ -character of the hybrid orbital, the smaller is its size.Therefore, the order of the size of the three hybrid orbitals is ${sp}^{3} > {sp}^{2} > sp$ .Accordingly, $sp$ orbital forms shortest and ${sp}^{3}$ orbital forms longest bonds with other atoms. So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317097 In the following molecule, how many carbon atoms are aranged linearly:
supporting img

1 2

2 3

3 4

4 5

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317098 In which of the following species underlined carbon is having ${sp}^{3}$ hybridisation?

1

C H_{3} \underset{―}{C} O O H

2

{CH}_{3} \underset{―}{C} H_{2} OH

3

{CH}_{3} \underset{―}{C} {OCH}_{3}

4

{CH}_{2} = \underset{―}{C} H - {CH}_{3}

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317099 Assertion :
Each carbon in ethylene molecule is ${sp}^{2}$ hybridised.
Reason :
The $H - C - H$ bond angle in ethylene molecule is $120^{\circ}$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

Each carbon in an ethylene molecule is ${sp}^{2}$ hybridized. The reason is also true, as the $H - C - H$ bond angle in ethylene is indeed $120^{\circ}$ , characteristic of ${sp}^{2}$ hybridization. But it is not the correct explanation. So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317095 Hybridisation of the underlined carbon in the given species $C H_{3} - C H_{2} - \underset{―}{C} H_{2}^{-}$ is

1

s p^{2}

2

s p^{3}

3

sp

4 No hybridisation

Explanation:

In the given species, for underlined carbon b.p $= 3, 1 . p = 1$ .
Thus $n = 4, i . e . s p^{3}$ .

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317096 Assertion :
Greater the $s$ -character of the hybrid orbital, the smaller is its size.
Reason :
${sp}^{3}$ orbital forms the longest and $sp$ orbital forms the shortest bond.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

The $s$ -orbitals are closer to the nucleus than the $p$ -orbitals. Thus, greater the $s$ -character of the hybrid orbital, the smaller is its size.Therefore, the order of the size of the three hybrid orbitals is ${sp}^{3} > {sp}^{2} > sp$ .Accordingly, $sp$ orbital forms shortest and ${sp}^{3}$ orbital forms longest bonds with other atoms. So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317097 In the following molecule, how many carbon atoms are aranged linearly:
supporting img

1 2

2 3

3 4

4 5

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317098 In which of the following species underlined carbon is having ${sp}^{3}$ hybridisation?

1

C H_{3} \underset{―}{C} O O H

2

{CH}_{3} \underset{―}{C} H_{2} OH

3

{CH}_{3} \underset{―}{C} {OCH}_{3}

4

{CH}_{2} = \underset{―}{C} H - {CH}_{3}

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317099 Assertion :
Each carbon in ethylene molecule is ${sp}^{2}$ hybridised.
Reason :
The $H - C - H$ bond angle in ethylene molecule is $120^{\circ}$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

Each carbon in an ethylene molecule is ${sp}^{2}$ hybridized. The reason is also true, as the $H - C - H$ bond angle in ethylene is indeed $120^{\circ}$ , characteristic of ${sp}^{2}$ hybridization. But it is not the correct explanation. So, the option (2) is correct.