NTSE MCQs 1 on "Carbon and its Compounds"

These are NTSE MCQs 1 of "Carbon and its Compounds" . Practice MCQs to check your knowledge for Entrance examination like NTSE etc.

1. – C = O represents the functional group: |

• Alcohols
• Carboxylic acids
• ketones
• Acids

2. A functional group mainly determines the

• Physical properties
• Chemical properties
• Both
• None of these

3. 100% pure ethanol is called

• Rectified spirit
• Absolute alcohol
• Denatured alcohol
• Power alcohol

4. Carboxylic acid containing one carbon atom is

• Formic acid
• Acetic acid
• Citric acid
• Vinegar

5. The odour of acetic acid resembles that of:

• Tomato
• Kerosene
• Vinegar
• Lemon juice

6. Sodium carbonate solution is added to dilute ethanoic acid. It is observed that :

• A gas evolves
• A solid settles at the bottom
• The mixture becomes warm
• The colour of the mixture

7. 2 ml of acetic acid is added to 5ml of water and was shaken up for 1minute, it was noticed that:

• The acid formed a separate layer on the top of water
• Water formed a separate layer on the top of the acid
• A clear and homogeneous solution is formed
• A pink and clear solution is formed

8. On adding NaHCO₃ to acetic acid, a gas is evolved which turns lime water milky due to the formation of:

• Calcium Carbonate
• Calcium Hydroxide
• Calcium bicarbonate
• Calcium Acetate

9. Which among the following contains triple bond:

• C₂H₄
• C₂H₂
• C₃H₄
• C₂H₆

10. The number of covalent bonds in C₅H₁₂ is:

• 15
• 16
• 17
• 18