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Alcohols - Class XII Chemistry

Quiz covering molecular formulas, IUPAC nomenclature, functional groups, and identification of alcohols in organic chemistry for Class XII students

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Molecular formula of ethanol is ?

  1. $C{H} _{3}OH$
  2. ${C} _{2}{H} _{4}{\left(OH\right)} _{2}$
  3. ${C} _{2}{H} _{5}OH$
  4. $HCHO$
Question 2 Multiple Choice (Single Answer)

What is its IUPAC name?


$CH _3-\underset{\displaystyle CH _3}{\underset{|}{CH}}-CH _2-OH$.

  1. 2-methyl propanol
  2. 2-ethyl ethanol
  3. 3-methyl propanol
  4. 3-ethyl ethanol
Question 3 Multiple Choice (Single Answer)

What is the functional group in alcohol?

  1. $-OH$
  2. $-CN$
  3. $-NC$
  4. -$NH _2$
Question 4 Multiple Choice (Single Answer)
The IUPAC name of : $CH _3 - \overset{CH _3\!\!\!\!\!}{\overset{|}{C}} - \overset{O}{\overset{||}{C}} - CH _2 - CH _2 OH$
  1. 1-hydroxy-4- methylpentan-3-one
  2. 2-methyl-5-hydroxypentane-3-one
  3. 4-methyl-3-oxopentan-1-ol
  4. Hexan-1-ol-3-one
Question 5 Multiple Choice (Single Answer)

What is IUPAC name of the following compound? 
C$H _3$ - C$H _2$ - C$H _2$ - OH

  1. Propane-1-ol
  2. Propane-2-ol
  3. Ethane-1-ol
  4. Ethane-2-ol
Question 6 Multiple Choice (Single Answer)

The IUPAC name of $(CH _{3}) _{2}CHCH _{2}CH _{2}OH$ is:

  1. 3-Methyl butan-1-ol
  2. 2-methyl pentan-1-ol
  3. 3-ethyl pentan-1-ol
  4. 2-ethyl butan-1-ol
Question 7 Multiple Choice (Single Answer)

Which of the following is a primary alcohol ?

  1. Butan - 2 - ol
  2. 2 - Methylpropan -1- ol
  3. 2 - Methylpropan - 2- ol
  4. None of the above
Question 8 Multiple Choice (Single Answer)

The molecular formula of ethanol is :

  1. $(CH _3) _2 CHOH$
  2. $C _2 H _5 OH$
  3. $CH _3 OH$
  4. $CH _3 CH _2 CH _2 OH$
Question 9 Multiple Choice (Single Answer)

The suffix used in the nomenclature of alcohol is:

  1. 'al'
  2. 'ol'
  3. 'yl'
  4. 'one'
Question 10 Multiple Choice (Single Answer)

Write the IUPAC name of the given compound:

$\begin{matrix} HO-C{ H } _{ 2 } \ - & CH &-C{ H } _{ 2 }-OH \  & | &  \  & C{ H } _{ 3 } &  \end{matrix}$

  1. 2-Methylpropane-1,3-diol
  2. 2-Methylpropan-1,3-dial
  3. 1-Hydroxy-2-methylpropan-1-ol
  4. None of these
Question 11 Multiple Choice (Single Answer)

What is the $IUPAC$ name of the following compound?


$CH _{3} - CH _{2} - CH _{2} - OH$

  1. Propan-1-ol
  2. Propan-2-ol
  3. Propane-1-ol
  4. Ethane-2-ol
Question 12 Multiple Choice (Single Answer)

Identify 'C' in the following reaction. 


$C _2H _5Br       \overset{KCN}  {\longrightarrow} A \overset{H^+ H _2O}   {\longrightarrow} B \overset{LiAlH _4}{\longrightarrow} C$

  1. $Propan - 1 - ol$
  2. $Propanone$
  3. $2 - Ethyl - 3 - pentanone$
  4. $Propanal$
Question 13 Multiple Choice (Single Answer)

The IUPAC name for $CH _3CH(OH)CH _2C(CH _3) _2OH$ is:

  1. 1, 1-dimethyl-1,3-butanediol
  2. 2-methyl-2,4 pentanediol
  3. 4-methyl-2 4-pentanediol
  4. 1,3,3- trimethyl 1-1,3-propanediol
Question 14 Multiple Choice (Single Answer)

IUPAC name of the compound $CH _3-CH(CH _2CH _3)-CH _2-CH(OH)-CH _3$ is:

  1. 4-Ethyl-2-pentanol
  2. 4-Methyl-2-hexanol
  3. 2-Ethyl-2-pentanol
  4. 3-Ethyl-2-hexanol
Question 15 Multiple Choice (Single Answer)

The general formula for alcohol series is $C _nH _{2n+1}OH$. Which is the formula for alcohol contains four carbon?  

  1. $C _5H _{11}OH$
  2. $C _4H _{9}OH$
  3. $C _4H _{8}OH$
  4. $C _3H _{8}OH$
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