Which of the following pairs are enantiomers?                

1. 

2. 

3. 

4. 

How many structural isomers are possible for the compound having molecular formula C₃H₅Br₃?

1. 5                   

2. 4

3. 6                   

4. 8

Which of the following is an optically active compound?        

1. 1-butanol 

2. 1-propanol

3. 2-chlorobutane 

4. 4-hydroxybutanal

In the following, the most stable conformation of n-butane is                

1.

2. 

3. 

4. 

The number of stereo isomers for 3-pentene 2-ol

1. 2 

2. 4 

3. 3 

4. 5

The most stable configuration of n-butane will be                

1. skew boat

2. eclipsed

3. gauche 

4. staggered-anti

The compound having molecular formula C₄H₁₀O can show-

1. Metamerism

2. Functional isomerism 

3. Positional isomerism

4. All of the above

Tautomerism will be exhibited by                 

1. (CH₃)₃CNO               

2. (CH₃)₂NH

3. R₃CNO₂                   

4. RCH₂NO₂

The total number of structural isomers is possible for C₅H₁₁Cl is-

1. 6 

2. 8

3. 10 

4. 12

 Which of the following compounds will exhibit cis-trans (geometrical) isomerism?

1. but-2-ene                             

2. Butanol

3. but-2-yne                             

4. buten-2-ol