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   

The number of possible isomers of the aromatic compound with molecular formula C₇H₈O are :
1. 3
2. 5
3. 7
4. 9

Which of the following will not show cis-trans-isomerism?                           

1. CH₃-CH=CH-CH₃

2. CH₃-CH₂-CH=CH-CH₂-CH₃

3. ${\mathrm{CH}}_3-\underset{|}{\mathrm{C}}=\mathrm{CH}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$
${\mathrm{CH}}_3$

4.${\mathrm{CH}}_3-\underset{|}{\mathrm{C}}\mathrm{H}-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$
${\mathrm{CH}}_3$
$$

An alkane can form Structural isomers if the number of carbon atoms is-

1. $\ge$1                                 

2. $\ge$2

3. $\ge$3                                   

4. $\ge$4