NCERT Class 10 Chapter 3 Carbon CBSE Board Sample Problems Multiple Choice Question

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Question

The questions below consist of statements of an Assertion and a Reason. Use the following key to choose appropriate answer

Assertion: Chemical bonds in organic compounds are covalent in nature. Reason. Reason: Covalent bond is formed by the sharing of electrons in the bonding atoms.

1. If both assertion and reason are CORRECT and reason is the CORRECT explanation of the assertion.

2. If both assertion and reason are CORRECT, but reason is NOT THE CORRECT explanation of the assertion.

3. If assertion is CORRECT, but reason is INCORRECT

4. If assertion is INCORRECT, but reason is CORRECT

Question

Ester is formed by the reaction between:

1. An acid and an alcohol

2. An acid and a base

3. A base and an alcohol

4. An acid and an alkene

Question

Which of the following substance produces brisk effervescence with baking soda solution?

1. Ethanoic acid

2. Table salt

3. Vinegar

4. Sunflower oil

Question

The property of self-linkage among identical atoms to form long chain compounds is known as:

1. Catenation

2. Isomerization

3. Superposition

4. Halogenation

Question

Butanone is a four- carbon compound with the functional group

1. Carboxylic acid

2. Aldehyde

3. Ketone

4. Alcohol

Question

Alkynes may be represented by the general formula:

Question

Identify the unsaturated compound from the following

i) Propane

ii) Propane

iii) Propyne

iv) Chloropropane

1. i and ii

2. ii and iv

3. iii and iv

4. ii and iii

Question

Which one of the fo4Iowng greenhouse gases is a contributor due to incomplete combustion of coal and petroleum?

1. Oxide of nitrogen

2. Methane.

3. Carbon mono oxide

4. Carbon-di Oxide

Question

The following questions consist of two statements — Assertion (A) and Reason(R).

Answer the questions selecting an options given below:

Assertion (A): will the appropriate undergo addition reaction with hydrogen

Reason(R): is unsaturated compound.

1. Both A and R are true and R is the correct explanation of A.

2. Both A and R are true and R ¡s the not the correct explanation of A.

3. A is true but R is false

4. A is false but R ¡s true

Question

The following questions consist of two statements Assertion (A) Reason(R).

Answer the questions selecting the appropriate options given below:

Assertion (A): Soap produces less foam with hard water.

Reason (R): Soap gets used in reaction with calcium and magnesium salts in hard water.

1. Both A and R are true and R is the correct explanation of A.

2. Both A and R are true and R is the not the correct explanation of A.

3. A is true but R ¡s false

4. A is false but R ¡s true

Question

The functional group present in aldehydes is -

1. -OH

2. -CHO

3. -COOH

4. -COOR

Question

Which of the following does not belong to the same homologous series

Question

The reaction between CH4 and chlorine in presence of sunlight is an example of

1. Substitution reaction

2. Combination reaction

3. Addition reaction

4. Decomposition reaction

Question

The tendency of carbon atoms to form long chains is called —

1. Polymerization

2. Catenation

3. Substitution

4. Bonding

Question

Which of the following compounds belong to the same homologous series?

I)

II)

III)

IV)

1. I and II

2. II and III

3. III and IV

4. II and IV