The deactivating but ortho-para directing benzene ring substituent among the following is-

1. -N=O

2. -OCH3

3. -COCH3

4. -NO2

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
From NCERT
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Which of the following organic chlorides will not give a Friedel-Craft alkylation product when heated with benzene and AlCl3/FeCl3 ?

 

 1. ( C H3)3CCl

 2. CH2=CHCH2Cl


 3.CH3CH2Cl


 4. CH2=CHCl

 

 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 56%
From NCERT
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Which of the following is aromatic?

1. 

2.  (Carbene)

3. 

4.  (Carbene)                    

Subtopic:  Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
From NCERT
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The compound X in the above reaction is-

1. 2.
3. 4.
Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
 69%
From NCERT
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Give a simple test to differentiate cyclohexane and cyclohexene :

1. Br2/H2O

2. Baeyer's reagent

3. Tollen's reagent

4. Both (1) and (2)

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 79%
From NCERT
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Partial oxidation of methane with Ni/Al2O3 catalyst gives:

1. HCHO

2. HCOOH

3. H2O and CO2

4. CO and H2O

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
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The maximum number of alkyl groups in C8H18 is:

(1) 6

(2) 5

(3) 4

(4) 2

Subtopic:  Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
 54%
From NCERT
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Predict the correct intermediate and product in the following reaction.

H3C-CCH HgSO4H2O, H2SO4 Intermediate Product

                                                    (A)                   (B)

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 71%
From NCERT
NEET - 2017
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An alkene reacts in accordance with Markownikoff's rule to give a product of 1-chloro-l-methylcyclohexane with HCl. The possible alkene is: 

1.
2.
3. Both 1 and 2
4.

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 72%
From NCERT
NEET - 2015
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2, 3-dimethyl-2-butene can be prepared by heating which of the following compounds

with a strong acid?

1. 

2. (CH3)3C-CH=CH2

3. (CH3)2C=CH-CH2-CH3

4. (CH3)2CH-CH2-CH=CH2

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
From NCERT
NEET - 2015
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