Position Isomerism

Q.

What are the six possible alkenes for ${\mathrm{C}}_5{\mathrm{H}}_{10}$?

Q.

What is Positional isomerism?

Q.

Which of the following compounds will not exhibit positional isomerism?

1. 2-butene
2. 2-butyne
3. 2-butanol
4. Butanal

Q. Which of the following is position and chain isomer of ${\text{CH}}_3{\text{CH}}_2{\text{COCH}}_2{\text{CH}}_3$?

1. ${\text{CH}}_3-\stackrel{\text{O}}{\stackrel{\text{||}}{\text{C}}}-\underset{{\text{CH}}_3}{\underset{\text{|}}{\text{CH}}}-{\text{CH}}_3$
2. ${\text{CH}}_3-{\text{CH}}_2-{\text{CH}}_2{\text{CH}}_2-{\text{CH}}_2-\text{CHO}$
3. ${\text{CH}}_3-{\text{CH}}_2-{\text{CH}}_2-{\text{CH}}_2-\text{OH}$
4. ${\text{CH}}_3-{\text{CH}}_2-{\text{CH}}_2-{\text{CH}}_2-{\text{CH}}_3$

Q.

The number of position isomers possible for 1- pentanol is

1. 0

2. 1

3. 3

4. 2

Q.

Why can not we have isomers of the first three members of alkane?

Q. 52. how many isomers of dimethyl cyclobutane are possible

Q.

Which of the following pairs of compounds are not positional isomers?

1. 

2. 

3. 

4. All of these

Q.

What type of isomerism is shown by 1-bromo propane and 2-bromo propane?

1. Functional isomerism

2. Metamerism

3. Position isomerism

4. Chain isomerism

Q. Which of the following is position isomer of $C{H}_3-C{H}_2-\stackrel{O}{\stackrel{||}{C}}-C{H}_2-C{H}_3$?

1. CH₃CH₂CH₂CH₂CHO

2. 

3. CH₃ - O- CH₂ -CH₂ - CH₃

4. CH₃ - CH₂ - O-CH₂ - CH₃

Q.

Positional isomerism, an example of structural isomerism, occurs when functional groups are in different positions on the same carbon chain.

1. True

2. False

Q.

How many positional isomers are possible in the molecule of $C_4{H}_{10}O$?

1. Three positional isomers

2. Four positional isomers

3. Two positional isomers

4. Only one positional isomers

Q. Draw the structural formula of all the possible isomers of the compound with the molecular formula for C₃H₆O and also give their electron dot structures.

Q.

In the molecular formula of methanal, -HCHO, the functional group is -CHO, then what is the alkyl group? Please explain.

Q.

Which of the following is position isomer of
$C{H}_3-C{H}_2-CH=C{H}_2$:

1. 

2. 

3. None of these

4. 

Q.

The total number of chain isomers for butane are

1. 6
2. 3
3. 4
4. 5

Q.

Using the structural formula, identify the functional group by circling it.

Dimethyl ether

Q.

Which among the following are positional isomers?

1. B & C

2. A & B

3. A & C

4. Only A

Q.

The isomerism exhibited by the structures given below is position isomerism.

1. True

2. False

Q.

Give formula of methly

Q.

The number of position isomers of the compound $C_6{H}_{12}$ is

1. 4

2. 5

3. 3

4. 2

Q. IN CHEMICAL COMPOUND C6H9COOH HOW MANY ISOMERS CAN BE DO

Q.

Which of the following is position isomer of

:

1. 

2. 

3. None of these

4. 

Q.

The number of functional isomers of pent-1-yne is?

1. 5

2. 4

3. 6

4. 7

Q. Positional isomerism occurs when functional groups are in different positions on the same carbon chain.

1. False
2. True

Q.

What are the positional isomers of $C_3{H}_{8}O$?

1. Butan - 1- ol

2. Propan - 1- ol

3. Propan - 2- ol

4. Both A & C

Q.

The compounds but-2-ene and but-1-ene are

1. Functional Isomers

2. Both B and C

3. Chain isomers

4. Positional isomers

Q. The position isomer of the given compound is .

1. but-1-ene
2. but-2-ene
3. prop-2-ene

Q.

Chain isomer of

$C{H}_3-C{H}_2-\stackrel{\underset{||}{O}}{C}-C{H}_2-C{H}_3$ is

1. $C{H}_3-\stackrel{\underset{||}{O}}{C}-C{H}_2-C{H}_2-C{H}_3$

2. $C_2{H}_{5}OH$

3. $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}CHO$

4. None of these

Q.

Which of the following is position isomer of?

1. 

2. 

3. 

4. None of these