Octane no. of a fuel can be increased by:

1. isomerism 

2. alkylation

3. reforming 

4. all of these

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 65%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The shortest C-C bond distance is found in

1. diamond 

2. ethane

3. benzene

4. acetylene

Subtopic:  Aliphatic Hydrocarbon- Physical Properties |
 82%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Benzene reacts with n-propyl chloride in the presence of anhydrous AlCl3 to give

1. 3-propyl-1-chlorobenzene

2. n-propyl benzene

3. no reaction

4. iso-propyl benzene

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
 69%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The distance between two adjacent cabron atoms is largest in

1. benzene 

2. ethene

3. butane

4. ethyne

 

Subtopic:  Aliphatic Hydrocarbon- Physical Properties |
 89%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

In benzene, C-C bond length is 1.39 A°; the C-H bond length is:

1. 1.39 

2. 1.08

3. 1.54

4. 1.46

Subtopic:  Aliphatic Hydrocarbon- Physical Properties |
 55%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which reaction produces acrylonitrile (CH2=CHCN)?

1. Ethyne Ba2+HCN                           

2. Acrylic acid KCN

3. Ethyne KCN                           

4. Ethyne HOCl

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 54%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

 is not converted to  by:

1. Wolff-Kishner reaction

2. Clemmensen reduction

3. Red P + HI at 200°C

4. Wurtz's reaction

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Products of the following reaction

CH3CC.CH2CH3(ii)Hydrolysis(i) O3... are

1. CH3CHO + CH3CH2CHO

2. CH3COOH + CH3COCH3

3. CH3COOHHOOC.CH2CH3

4. CH3COOHCO2

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 60%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Acetylene reacts with 42% H2SO4 containing 1% HgSO4 to give:

1. C2H5HSO4                               

2. CH3CHO

3. HCHO                                       

4. CH2=CH2

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 79%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

When CaC2 was hydrolysed a gas was obtained. It had a garlic odour due to phosgene present as impurity. The gas was passed through ammoniacal solution of Cu2Cl2, a red ppt. was obtained. The gas was:

1. ethylene                                       

2. propyne

3. acetylene                                     

4. ethane

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 74%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints