NCERT Class 10 Chapter 3 Carbon CBSE Board Sample Problems Very Short Answer

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Question

What do you understand by monounsaturated fatty acid?

Solution

A fatty acid with only one double bond is called monounsaturated fatty acid.

Question

Define catenation

Solution

Carbon has the unique ability to form bonds with other atoms of carbon, giving rise to large molecules.

Question

Butter does not decolorize bromine water, whereas cooking oil does. Comment.

Solution

Unsaturated hydrocarbons decolorize bromine water. Therefore cooking oil decolorizes bromine water whereas butter does not.

Question

Why ethyne burns with a sooty flame?

Solution

Unsaturated hydrocarbons like ethyne burns with a sooty flame due to incomplete combustion.

Question

Give the I.U.P.A.C. name of the following:

Solution

Propanal

Question

Write the name of the following compound:

Solution

But-1 -ene

Question

How many structural isomers are possible for butane?

Solution

Two

Question

Which of the following are alkenes?

Solution

Question

How many covalent bonds are present in butane?

Solution

Thirteen

Question

A neutral compound (A) is formed by the reaction of an acid (B) which is present in ant’s sting and an alcohol (C) which is used in the preparation of tincture of iodine. Identify the compounds B and C? (1)

Solution

B: Methanoic acid! Formic acid (1/2)

C: Ethanol (1/2)

Question

How many covalent bonds are there in a molecule of Ethane? (1)