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%
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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%
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Which of the following compounds with molecular formula, C5H10 yields acetone on ozonolysis?

1. 2-methyl-2-butene

2. 3-methyl-1-butene

3. Cyclopentane

4. 2-methyl-1-butene

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 81%
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Ozonolysis (O3H2O2) of, CH3-CH|CH3-CC-CH3 gives :

1.  CH3CH|CH3COOHCH3COOH

2. CH3CH|CH3CHO + CH3CHO

3. CH3CH|CH3CHO + CH3COOH

4. none of the above

 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 74%
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In a reaction, 

CH2=CH2acidHypochlorousMRCH2OH|CH2OH

M = molecules, R = reagent. M and R are

1. CH3CH2Cl and NaOH

2. CH2Cl.CH2OH and aq. NaHCO3

3. CH3CH2OH and HCl

4.  and heat

Subtopic:  Aliphatic Hydrocarbon - Methods of Preparation |
 71%
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When 3,3-dimethyl-2-butanol is heated with conc.H2SO4, the major product obtained is -

1. 2,3-Dimethyl-2-butene

2. 3,3-Dimethyl-2-butene

3. 2,3-Dimethyl-1-butene

4. is and trans-isomers of 2,3-Dimethyl-2-butene

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 58%
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During ozonolysis of CH2=CH2 if hydrolysis is made in absence of Zn dust the products formed are:

1. HCHO                                  2. HCOOH 

3. CH3OH                                4. CH2OHCH2OH

 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 56%
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CH3CC.CH3(ii) H2O/Zn(i) XCH3-C-C-CH3
          ||    ||
          O    O

In the above reaction X is:

1. HNO3 

2. O2

3. O3

4. KMnO4

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 83%
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The major product of the following reaction is:

 +  Alc.KOH   ?

1. Butene

2. But-2-ene

3. Butane 

4. But-1-yne

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 92%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

An alkene, obtained by the dehydration of an alcohol (A), on ozonolysis gives two molecules of acetaldehyde for every molecule of alkene. The alcohol (A) is:

1. CH3CH2CH2OH 

2. CH3CH2OH

3. CH3CH=CHCH2OH   

4. 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 65%
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NEET 2023 - Target Batch - Aryan Raj Singh
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