2,3-dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?

1. ${({CH}_{3})}_{2} CH - \underset{{CH}_{3}}{\underset{|}{CH}} - CH = {CH}_{2}$

2. ${({CH}_{3})}_{3} C - C H = C H_{2}$

3. ${({CH}_{3})}_{2} C = C H - C H_{2} - C H_{3}$

4. ${({CH}_{3})}_{2} C H - C H_{2} - C H = C H_{2}$

Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |

From NCERT

NEET - 2015

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Q47:

In the reaction with HCl, an alkene reacts in accordance with Markovnikov's rule, to give a product 1-chloro-1-methylcyclohexane. The possible alkene is:

1.		2.
3.	(1) and (2)	4.

Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |

70%

From NCERT

NEET - 2015

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Q48:

Consider the nitration of benzene using mixed conc. H₂SO₄ and HNO₃. If a large amount of KHSO₄ is added to the mixture, the rate of nitration will be

1. slower
2. unchanged
3. doubled
4. faster

Subtopic: Common Ion Effect |

57%

NEET - 2016

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

Q49:

In the reaction,

H - C \equiv CH \to_{(ii) {CH}_{3} {CH}_{2} Br}^{(i) {NaNH}_{2} / liq . {NH}_{3}} X \to_{(ii) {CH}_{3} {CH}_{2} Br}^{(i) {NaNH}_{2} / liq . {NH}_{3}} Y

X and Y are:

1. X = 2 –Butyne; Y = 3 –Hexyne
2. X = 2 – Butyne; Y = 2-Hexyne
3. X = 1-Butyne; Y = 2-Hexyne
4. X = 1 – Butyne; Y = 3 – Hexyne

Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |

54%

From NCERT

NEET - 2016

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Q50:

The compound

C_{7} H_{8}

undergoes the following reactions :

C_{7} H_{8} \overset{3 {Cl}_{2} / ∆}{\to} A \overset{{Br}_{2} / Fe}{\to} B \overset{Zn / HCl}{\to}

C
The product 'C' is

1. m–Bromotoluene
2. o–Bromotoluene
3. 3–Bromo–2,4,6–trichlorotoluene
4. p–Bromotoluene

Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |

NEET - 2018

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

Q51:

Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is

1.

CH \equiv CH

2.

{CH}_{2} = {CH}_{2}

3.

{CH}_{3} - {CH}_{3}

4.

{CH}_{4}

Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |

68%

From NCERT

NEET - 2018

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Q52:

The compound that will react most readily with gaseous bromine has the formula is-

1. $C_{3} H_{6}$

2. $C_{2} H_{2}$

3. $C_{4} H_{10}$

4. $C_{2} H_{4}$

Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |

From NCERT

NEET - 2016

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Q53:

In the given reaction:

The product P is:

1.		2.
3.		4.

Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |

51%

From NCERT

NEET - 2016

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Q54:

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

1.

2.

3.

4.

Subtopic: Hybridisation |

69%

From NCERT

NEET - 2016

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Q55:

Which of the following can be used as the halide component for Friedel-Crafts reaction?

1. Chlorobenzene

2. Bromobenzene

3. Chloroethene

4. Isopropyl chloride

Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |

63%

From NCERT

NEET - 2016

1

2

3

4

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions

2,3-dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid? 1. CH32CH-CH|CH3-CH=CH2 2. CH33C-CH=CH2 3. CH32C=CH-CH2-CH3 4. CH32CH-CH2-CH=CH2

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions