Isomers of a substance must have the same-         

1. Structure

2. Physical properties

3. Chemical properties

4. Molecular formula

A pair that represents chain isomer is -

1. CH₃CHCl₂ and ClCH₂CH₂Cl

2. Propyl alcohol and Isopropyl alcohol

3. 2-Methylbutane and Neopentane

4. Diethyl ether and Dipropylether

Number of monochlorinated products (excluding stereo-isomers) obtained from the given reaction are :

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

1. 5                   

2. 4

3. 6                   

4. 8

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

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