Chemistry · Science General

Alcohols, Ethers and Carboxylic Acids

391 Questions

Alcohols, ethers, and carboxylic acids questions explore organic chemistry reactions, chemical formulas, and compound identifications. The topics cover practical applications like antifreeze production and specific chemical conversions. This material helps candidates preparing for science oriented competitive exams.

Organic reactionsChemical compounds identificationAlcohol conversionCarboxylic acid propertiesIndustrial chemical applications

Alcohols, Ethers and Carboxylic Acids Questions

Multiple choice

The first organic compound prepared by Wohler was

  1. methane.

  2. urea.

  3. alcohol.

  4. ketones.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Friedrich Wohler synthesized urea from ammonium cyanate in 1828, which was the first time an organic compound was produced from inorganic materials.

Multiple choice

The functional group present in propanone is

  1. carboxyl group.

  2. aldehyde group.

  3. ketonic group.

  4. alcoholic group.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Propanone is a ketone with the formula CH3COCH3. The functional group characterizing ketones is the carbonyl group bonded to two carbon atoms.

Multiple choice

A reaction between acid and alcohol results in the formation of

  1. carboxyllic acid.

  2. an aldehyde.

  3. a sweet smelling ester.

  4. a sweet smelling ester and water.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The reaction between a carboxylic acid and an alcohol is called esterification. It produces an ester, which typically has a sweet, fruity smell, and water.

Multiple choice

The main constituent of wine and beer is

  1. ethyl alcohol and water.

  2. ethyl alcohol.

  3. methyl alcohol.

  4. mixture of ethyl and methyl alcohol.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The primary alcohol found in fermented beverages like wine and beer is ethanol, also known as ethyl alcohol.

Multiple choice

The oxidizing agents used to convert alcohol into acid are

  1. Alkaline KMnO4

  2. Acidified KCr207

  3. H2SO4

  4. a & b both
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Both alkaline potassium permanganate (KMnO4) and acidified potassium dichromate (K2Cr2O7) are strong oxidizing agents that can convert primary alcohols to carboxylic acids. Sulfuric acid (H2SO4) is typically used as a dehydrating agent or catalyst, not as an oxidizing agent for this conversion.

Multiple choice

Which of the following is an acyclic sesquiterpene alcohol ?

  1. Farnesol

  2. Dolichol

  3. Asparagine

  4. Cytosol
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Farnesol is a natural organic compound which is an acyclic sesquiterpene alcohol found as a colourless liquid. It is insoluble in water, but miscible with oils. It is the building block of most, and possibly all, acyclic sesquiterpenoids and is an important starting compound for organic synthesis.

Multiple choice

Which of the following is used as an anti-knocking agent?

  1. Feron

  2. Glycol

  3. Glyoxal

  4. TEL

  5. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Anti-knocking agents are those compounds, which on adding gasoline in a very small quantity reduce knocking. TEL (C2H5)4Pb is added the extent of only 0.01% in gasoline as antiknocking compound.

Multiple choice

Which of the following is not a ketone body?

  1. Acetoacetic acid

  2. Acetone

  3. Succinic acid

  4. Beta-hydroxybutyric acid

  5. -
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is not a ketone body. It is a byproduct in carbohydrate metabolism and is formed in Kreb's cycle.