Tag: physical properties of ethers

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Multiple choice chemistry hydroxy compounds and ethers physical properties of ethers ethers alcohols, phenols and ethers

The isomerism in ether is called as ________.

  1. regio isomerism

  2. metamerism

  3. functional isomerism

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ethers show metamerism. When the two compounds have same ratios of atoms but different arrangements, then they are said to show metamerism. e.g. Methyl propyl ether and diethyl ether have same ratios of carbon, hydrogen and oxygen atoms but different structural arrangements. Hence they are metamers of each other.

Multiple choice chemistry hydroxy compounds and ethers physical properties of ethers ethers alcohols, phenols and ethers

Ethers show dipolar nature due to the presence of ______.

  1. central C atom

  2. central O atom

  3. central N atom

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ethers have general structural formula R-O-R'. Hence all of them have the C-O bond. We know that the C-O bond is polar due to the difference between the electronegativities of carbon and oxygen. Hence, ethers show dipolar nature.

Multiple choice chemistry hydroxy compounds and ethers physical properties of ethers ethers alcohols, phenols and ethers

Alcohols and ethers are functional isomers and belong to:

  1. same homologous series

  2. same functional group

  3. different homologous series

  4. both B and C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Alcohols and ethers are functional isomers because they have some molecular formula but different structure but they belong to different homologous series. 
$R-CH _2-CH _2-OH$         $R-CH _2O-CH _3$
     alcohol                                              ether
Multiple choice chemistry hydroxy compounds and ethers physical properties of ethers ethers alcohols, phenols and ethers

Ethers having same molecular formula but different alkyl groups on either side of the oxygen atoms show:

  1. optical activity

  2. functional isomerism

  3. chain isomerism

  4. metamerism
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ethers having same molecular formula but different alkyl groups on either side of the oxygen atoms show metamerism. Ethoxy ethane and methoxypropane, phenetole and benzyl methyl ether show metamerism.

Multiple choice chemistry hydroxy compounds and ethers physical properties of ethers ethers alcohols, phenols and ethers

Which of the following are metamerism?

  1. Ethoxy ethane and methoxypropane

  2. Phenetole and benzyl methyl ether

  3. Both a and b

  4. None of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Ethers having same molecular formula but different alkyl groups on either side of the oxygen atoms show metamerism. Ethoxy ethane and methoxypropane, phenetole and benzyl methyl ether show metamerism.