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12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181683 $(C_{2} H_{5})_{2} C H C H_{2} O H$ का $I U P A C$ नाम है

1

2 -

एथिल ब्यूटेनॉल

- 1

2

2 -

मेथिल पेन्टेनॉल

- 1

3

2 -

एथिल पेन्टेनॉल

- 1

4

3 -

एथिल ब्यूटेनॉल

- 1

Explanation:

The IUPAC nomenclature is done by determining the main carbon chain which contains the most active functional group. The longest hydrocarbon chain in the given compound consists of five carbon atoms, but it is not the main chain because it does not contain the functional group $(- O H)$ . The other carbon chain consists of four carbon atoms with - $O H$ group. The carbon attached to the $- O H$ functional group is labeled as $1$ . It is a saturated carbon chain, hence the word root with suffix is butanol. An alkyl group attached to the second carbon atom is 'ethyl' group. Therefore, the correct nomenclature is $2$ -Ethylbutan- $1$ -ol. 276-s30

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181684 निम्न यौगिक का $\begin{matrix} H \\ | \\ C H_{3} - C - C H_{2} - C H_{3} \\ | \\ C_{6} H_{5} \end{matrix}$

1

2 -

सायक्लोहैक्सिल ब्यूटेन

2

2 -

फेनिल ब्यूटेन

3

3 -

सायक्लोहैक्सिल ब्यूटेन

4

3 -

फेनिल ब्यूटेन

Explanation:

As $p h$ - group is attached at carbon no. $2$ of alkane chain so IUPAC name of compound is $2$ - phenylbutane.

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181685 $C H_{3} C H (C H_{3}) C O O H$ का $I U P A C$ नाम है

1 डाईमेथिल एसीटिक अम्ल

2

2 -

मेथिल प्रोपेनॉइक अम्ल

3 प्रोपेनॉइक अम्ल

4 ब्यूटाइरिक अम्ल

Explanation:

As it contains $4$ carbon and functional group is carboxylic acid so its name is $2$ -methyl propanoic acid.

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181686 निम्न यौगिक का $I U P A C$ नाम है $C H_{3} - \underset{C H_{3}}{\underset{|}{C H}} - C H_{2} - C H_{2} - O H$

1

1 -

पेन्टेनॉल

2 पेन्टेनॉल

3

2 -

मेथिल

- 4 -

ब्यूटेनॉल

4

3 -

मेथिल

- 1 -

ब्यूटेनॉल

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181683 $(C_{2} H_{5})_{2} C H C H_{2} O H$ का $I U P A C$ नाम है

1

2 -

एथिल ब्यूटेनॉल

- 1

2

2 -

मेथिल पेन्टेनॉल

- 1

3

2 -

एथिल पेन्टेनॉल

- 1

4

3 -

एथिल ब्यूटेनॉल

- 1

Explanation:

The IUPAC nomenclature is done by determining the main carbon chain which contains the most active functional group. The longest hydrocarbon chain in the given compound consists of five carbon atoms, but it is not the main chain because it does not contain the functional group $(- O H)$ . The other carbon chain consists of four carbon atoms with - $O H$ group. The carbon attached to the $- O H$ functional group is labeled as $1$ . It is a saturated carbon chain, hence the word root with suffix is butanol. An alkyl group attached to the second carbon atom is 'ethyl' group. Therefore, the correct nomenclature is $2$ -Ethylbutan- $1$ -ol. 276-s30

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181684 निम्न यौगिक का $\begin{matrix} H \\ | \\ C H_{3} - C - C H_{2} - C H_{3} \\ | \\ C_{6} H_{5} \end{matrix}$

1

2 -

सायक्लोहैक्सिल ब्यूटेन

2

2 -

फेनिल ब्यूटेन

3

3 -

सायक्लोहैक्सिल ब्यूटेन

4

3 -

फेनिल ब्यूटेन

Explanation:

As $p h$ - group is attached at carbon no. $2$ of alkane chain so IUPAC name of compound is $2$ - phenylbutane.

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181685 $C H_{3} C H (C H_{3}) C O O H$ का $I U P A C$ नाम है

1 डाईमेथिल एसीटिक अम्ल

2

2 -

मेथिल प्रोपेनॉइक अम्ल

3 प्रोपेनॉइक अम्ल

4 ब्यूटाइरिक अम्ल

Explanation:

As it contains $4$ carbon and functional group is carboxylic acid so its name is $2$ -methyl propanoic acid.

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181686 निम्न यौगिक का $I U P A C$ नाम है $C H_{3} - \underset{C H_{3}}{\underset{|}{C H}} - C H_{2} - C H_{2} - O H$

1

1 -

पेन्टेनॉल

2 पेन्टेनॉल

3

2 -

मेथिल

- 4 -

ब्यूटेनॉल

4

3 -

मेथिल

- 1 -

ब्यूटेनॉल

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181683 $(C_{2} H_{5})_{2} C H C H_{2} O H$ का $I U P A C$ नाम है

1

2 -

एथिल ब्यूटेनॉल

- 1

2

2 -

मेथिल पेन्टेनॉल

- 1

3

2 -

एथिल पेन्टेनॉल

- 1

4

3 -

एथिल ब्यूटेनॉल

- 1

Explanation:

The IUPAC nomenclature is done by determining the main carbon chain which contains the most active functional group. The longest hydrocarbon chain in the given compound consists of five carbon atoms, but it is not the main chain because it does not contain the functional group $(- O H)$ . The other carbon chain consists of four carbon atoms with - $O H$ group. The carbon attached to the $- O H$ functional group is labeled as $1$ . It is a saturated carbon chain, hence the word root with suffix is butanol. An alkyl group attached to the second carbon atom is 'ethyl' group. Therefore, the correct nomenclature is $2$ -Ethylbutan- $1$ -ol. 276-s30

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181684 निम्न यौगिक का $\begin{matrix} H \\ | \\ C H_{3} - C - C H_{2} - C H_{3} \\ | \\ C_{6} H_{5} \end{matrix}$

1

2 -

सायक्लोहैक्सिल ब्यूटेन

2

2 -

फेनिल ब्यूटेन

3

3 -

सायक्लोहैक्सिल ब्यूटेन

4

3 -

फेनिल ब्यूटेन

Explanation:

As $p h$ - group is attached at carbon no. $2$ of alkane chain so IUPAC name of compound is $2$ - phenylbutane.

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181685 $C H_{3} C H (C H_{3}) C O O H$ का $I U P A C$ नाम है

1 डाईमेथिल एसीटिक अम्ल

2

2 -

मेथिल प्रोपेनॉइक अम्ल

3 प्रोपेनॉइक अम्ल

4 ब्यूटाइरिक अम्ल

Explanation:

As it contains $4$ carbon and functional group is carboxylic acid so its name is $2$ -methyl propanoic acid.

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181686 निम्न यौगिक का $I U P A C$ नाम है $C H_{3} - \underset{C H_{3}}{\underset{|}{C H}} - C H_{2} - C H_{2} - O H$

1

1 -

पेन्टेनॉल

2 पेन्टेनॉल

3

2 -

मेथिल

- 4 -

ब्यूटेनॉल

4

3 -

मेथिल

- 1 -

ब्यूटेनॉल

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181683 $(C_{2} H_{5})_{2} C H C H_{2} O H$ का $I U P A C$ नाम है

1

2 -

एथिल ब्यूटेनॉल

- 1

2

2 -

मेथिल पेन्टेनॉल

- 1

3

2 -

एथिल पेन्टेनॉल

- 1

4

3 -

एथिल ब्यूटेनॉल

- 1

Explanation:

The IUPAC nomenclature is done by determining the main carbon chain which contains the most active functional group. The longest hydrocarbon chain in the given compound consists of five carbon atoms, but it is not the main chain because it does not contain the functional group $(- O H)$ . The other carbon chain consists of four carbon atoms with - $O H$ group. The carbon attached to the $- O H$ functional group is labeled as $1$ . It is a saturated carbon chain, hence the word root with suffix is butanol. An alkyl group attached to the second carbon atom is 'ethyl' group. Therefore, the correct nomenclature is $2$ -Ethylbutan- $1$ -ol. 276-s30

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181684 निम्न यौगिक का $\begin{matrix} H \\ | \\ C H_{3} - C - C H_{2} - C H_{3} \\ | \\ C_{6} H_{5} \end{matrix}$

1

2 -

सायक्लोहैक्सिल ब्यूटेन

2

2 -

फेनिल ब्यूटेन

3

3 -

सायक्लोहैक्सिल ब्यूटेन

4

3 -

फेनिल ब्यूटेन

Explanation:

As $p h$ - group is attached at carbon no. $2$ of alkane chain so IUPAC name of compound is $2$ - phenylbutane.

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181685 $C H_{3} C H (C H_{3}) C O O H$ का $I U P A C$ नाम है

1 डाईमेथिल एसीटिक अम्ल

2

2 -

मेथिल प्रोपेनॉइक अम्ल

3 प्रोपेनॉइक अम्ल

4 ब्यूटाइरिक अम्ल

Explanation:

As it contains $4$ carbon and functional group is carboxylic acid so its name is $2$ -methyl propanoic acid.

12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES (HM)

181686 निम्न यौगिक का $I U P A C$ नाम है $C H_{3} - \underset{C H_{3}}{\underset{|}{C H}} - C H_{2} - C H_{2} - O H$

1

1 -

पेन्टेनॉल

2 पेन्टेनॉल

3

2 -

मेथिल

- 4 -

ब्यूटेनॉल

4

3 -

मेथिल

- 1 -

ब्यूटेनॉल