Students can refer to Class 10 Science MCQ Questions of Carbon and Its Compounds with Answer and evaluate their preparation level. Check below the MCQ Questions with Answers to increase your speed in exams and Clear your concept.

Practice Class 10 Science MCQ Questions of Carbon and its Compounds

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

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

2. Which amongst the following will conduct electricity?

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

3. Artificial flavour for orange is obtained from

(a) amyl acetate
(b) isoamyl valerate
(c) methyl butyrate
(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.

5. Which is denatured spirit?

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

6. Soaps are formed by saponification of

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

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.

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) \(CH_3COOH + H_2O\)

9. The isomeric pair is

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

10. The by product of soap is

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

11. A functional group mainly determines the

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

12. 100% pure ethanol is called

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

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

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) \(C_4H_8\)

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.

17. Butanone is a four-carbon compound with the functional group:

(a) carboxylic acid
(b) aldehyde
(c) ketone
(d) alcohol

18. The chemical formulae of propane is :

(a) \(CH_4\)
(b) \(C_3H_8\)
(c) \(C_4H_{10}\)
(d) \(C_2H_6\)

19. I.U.P.A.C. name of acetaldehyde is:

(a) Ethanol
(b) Ethanal
(c) Methanol
(d) Methanal

20. Solubility of alcohol in water is due to

(a) low density of alcohol
(b) volatile nature of alcohol
(c) ionisation
(d) hydrogen bonding

Answer Key

1. (a) Sodium nitrate
2. (d) \(NaCl (aq)\)
3. (d) octyl acetate
4. (d) are formed by the sharing of electrons in the bonding atoms.
5. (c) ethanol and methanol (5%)
6. (c) simple esters
7. (b) Both A and R are true but R is not the correct explanation of A.
8. (b) \(C_2H_5ONa + H_2\)
9. (d) Butane and 2-methylpropane
10. (b) Glycerol
11. (b) Chemical properties
12. (b) Absolute alcohol
13. (b) it has a high melting point and slippery layers.
14. (b) graphite
15. (d) \(C_4H_8\)
16. (b) 7 covalent bonds
17. (c) ketone
18. (b) \(C_3H_8\)
19. (b) Ethanal
20. (d) hydrogen bonding

Click here to practice more MCQ Questions from Chapter Carbon and its Compounds Class 10 Science