Class 10 Science MCQ Questions of Carbon and Its Compounds

Reconsider every concept effectively by taking assistance from the MCQ Questions for Class 10 Science with Answer are prepared based on the most recent exam pattern. Students can allude to these Class 10 Science MCQ Questions of Carbon and Its Compounds with Answer and evaluate their preparation level.

Carbon is a fundamental natural compound, which is needed for the life process. Like oxygen and nitrogen, carbon additionally plays a significant component in every living organic entity. Carbon assumes a significant part in photosynthesis. The movement of carbon dioxide among the four circles of the earth is known as the carbon cycle. This biogeochemical cycle helps in keeping up the carbon level inside the environment.

Check below the MCQ Questions with Answer to increase your speed in exams and Clear your concept.

1. The substnace not responsible for the hardness of water is

(a) Sodium nitrate
(b) calcium hydrogen carbonate
(c) calcium carbonate
(d) magnesium carbonate

Answer:

(a) Sodium nitrate

2. Which amongst the following will conduct electricity?

(a) \(C_6H_{12}O_6\)
(b) \(KCl(s)\)
(c) \(C_2H_5OH\)
(d) \(NaCl (aq)\)

Answer:

(d) \(NaCl (aq)\)

3. Artificial flavour for orange is obtained from

(a) amyl acetate
(b) isoamyl valerate
(c) methyl butyrate
(d) octyl acetate

Answer:

(d) octyl acetate

4. Covalent compounds

(a) have high melting and boiling point
(b) are mostly soluble in water
(c) are formed between atoms of metals and non-metals
(d) are formed by the sharing of electrons in the bonding atoms.

Answer:

(d) are formed by the sharing of electrons in the bonding atoms.

5. Which is denatured spirit?

(a) ethanol only
(b) ethanol and methanol (50%)
(c) ethanol and methanol (5%)
(d) methanol only

Answer:

6. Soaps are formed by saponification of

(a) alcohols
(b) glycosides
(c) simple esters
(d) carboxylic acids

Answer:

7. Assertion: Soaps are 100% biodegradable but do not work well with hard water.

Reason: Some detergents are not bio-degradable but work well with hard water.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.

Answer:

(b) Both A and R are true but R is not the correct explanation of A.

8. Ethanol reacts with Na metal to form

(a) \(CH_3ONa + H_2\)
(b) \(C_2H_5ONa + H_2\)
(c) \(CH_3COONa + H_2\)
(d) \(CH_3COOH + H_2O\)

Answer:

(b) \(C_2H_5ONa + H_2\)

9. The isomeric pair is

(a) Ethane and propane
(b) Propane and butane
(c) Ethane and ethane
(d) Butane and 2-methylpropane

Answer:

(d) Butane and 2-methylpropane

10. The by product of soap is

(a) Isoprene
(b) Glycerol
(c) Butene
(d) Ethylene glycol

Answer:

(b) Glycerol

11. A functional group mainly determines the

(a) Physical properties
(b) Chemical properties
(c) Both
(d) None of these

Answer:

(b) Chemical properties

12. 100% pure ethanol is called

(a) Rectified spirit
(b) Absolute alcohol
(c) Denatured alcohol
(d) Power alcohol

Answer:

(b) Absolute alcohol

13. Graphite is used as a lubricant in machines because

(a) it is a good conductor of electricity.
(b) it has a high melting point and slippery layers.
(c) its density ranges from 1.9 to 2.3 \(g/cm^3\).
(d) it is strong and soft.

Answer:

(b) it has a high melting point and slippery layers.

14. The allotrope of carbon which is a good conductor of heat and electricity is

(a) diamond
(b) graphite
(c) charcoal
(d) none of these

Answer:

(b) graphite

15. Which of the following does not belong to the same homologous series?

(a) \(CH_4\)
(b) \(C_2H_6\)
(c) \(C_3H_8\)
(d) \(C_4H_8\)

Answer:

(d) \(C_4H_8\)

16. Ethane, with the molecular formula \(C_2H_6\) has :

(a) 6 covalent bonds
(b) 7 covalent bonds
(c) 8 covalent bonds
(d) 9 covalent bonds.