NCERT Class 10/MCQ Questions for Class 10 Science Chapter 4 Carbon and Its Compounds Sample Test,Sample questions

Question:
A student is given equal amount of three samples of water with temporary hardness labeled as ‘A’, ‘B’ and ‘C’. He keeps the three samples at different temperatures – A at room temperature, B at 50 °C and C at 95 °C. Which sample will give maximum amount of lather when 10 mL of soap solution is added to each sample and shaken for equal time?

1.(A) only

2.Both (A) & (B)

3.Both (B) and (C)

4.(C) only


Question:
Buckminster fullerene is an allotropic form of:

1.Phosphorus

2.Sulphur

3.Carbon

4.Tin


Question:
Carbon exists in the atmosphere in the form of:

1.Only carbon monoxide

2.Carbon monoxide in traces and carbon dioxide

3.Only carbon dioxide

4.Coal [NCERT Examplar]


Question:
Ethanol reacts with sodium and forms two products. These are:

1. Sodium ethanoate and hydrogen

2.Sodium ethanoate and oxygen

3.Sodium ethoxide and hydrogen

4. Sodium ethoxide and oxygen


Question:
Ethanol reacts with sodium and forms two products. These are:

1. Sodium ethanoate and hydrogen

2.Sodium ethanoate and oxygen

3.Sodium ethoxide and hydrogen

4. Sodium ethoxide and oxygen


Question:
If you take some distilled water in a test- tube, add an equal amount of acetic acid to it, shake the test tube well and leave it undisturbed on the test tube stand, then after about 5 minutes, what would you observe?

1.There is a Layer of water over the layer of acetic acid.

2.A precipitate is settling at the bottom of the test tube.

3.Bubbles of colorless gas are coming out of the test tube.

4.There is a clear, colorless transparent solution in the test tube.


Question:
In the preparation of soap addition of sodium chloride causes:

1.Complete saponification

2.Complete hydrolysis

3.Complete precipitation

4.Complete neutralization


Question:
In the soap micelles

1.The ionic end of soap ¡s on the surface of the cluster, white the carbon chain is in the interior of the cLuster.

2.The ionic end of soap is in the interior of the cluster and the carbon chain is out of the cluster.

3. Both the ionic end and carbon chain are in the interior of the cluster.

4.Both the ionic end and carbon chain are on the exterior of the cluster.


Question:
Which of the following compounds do not contain the Carboxylic acid functional group?
(I) C2H5COOH
(II) C3H7OH
(III) CH3COOH
(IV) CH3CHO

1.Both (I) and (II)

2.Both (II) and (III)

3.Both (I) and (III)

4.Both (II) and (IV)


Question:
Which of the following does not belong to the same homologous series?

1.CH4

2.C2H2

3.C3H8

4.C4H8


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