CBSE Class 10 Science Chapter 4 Carbon and its Compound MCQ Questions with Answers
Carbon and its Compound MCQs – Here is a compilation of Class 10 Science MCQs Chapter 4 Carbon and Its Compounds. Students can practice free MCQs as have been added by CBSE in the new Exam pattern. At the end of Multiple Choice Questions, the answer key has also been provided for your reference. Take Free Online MCQs Test For Class 10.
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1. The isomeric pair is
A. Ethane and propane
B. Propane and butane
C. Ethane and ethane
D. Butane and 2-methylpropane
2. Which of the given is used to oxidise ethanol to ethanoic acid?
A. Alkaline KMnO₄
B. Conc. H₂SO₄
C. Acidified K₂Cr₂O₇
D. All of these
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3. Which is denatured spirit?
A. Ethanol only
B. Ethanol and methanol (50%)
C. Ethanol and methanol (5%)
D. Methanol only
4. Tertiary butanol gets oxidised with oxidising agents like alkaline KMNO₄ to
A. Isobutane
B. Ter-butyl alcohol
C. Secondary-propyl alcohol
D. All of these
5. The substance not responsible for the hardness of water is
A. Sodium nitrate
B. Calcium hydrogen carbonate
C. Calcium carbonate Magnesium carbonate
6. The by product of soap is
A. Isoprene
B. Glycerol
C. Butene
D. Ethylene glycol
7. 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
8. Vinegar is a solution of
A. 30% – 40% acetic acid in alcohol
B. 5% – 8% acetic acid in alcohol
C. 5% – 8% acetic acid in water
D. 15% -20% acetic acid in water
9. Which of the given can be used for the denaturation of ethyl alcohol?
A. Methyl alcohol
B. Pyridines
C. Copper sulphate
D. All of these
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10. Soaps are formed by saponification of
A. Alcohols
B. Glycosides
C. Simple esters
D. Carboxylic acids
11. Carbon exists in the atmosphere in the form of
A. Only carbon monoxide
B. Carbon monoxide in traces and carbon dioxide
C. Only carbon dioxide
D. Coal
12. Which of the following statements are usually correct for carbon compounds? These
(a) Are good conductors of electricity.
(b) Are poor conductors of electricity.
(c) Have strong forces of attraction between their molecules.
(d) Do not have strong forces of attraction between their molecules.
A. (A) & (C)
B. (B) & (C)
C. (A) & (D)
D. (B) & (D)
13. A molecule of ammonia (NH₃) has
A. Only single bonds
B. Only double bonds
C. Only triple bonds
D. Two double bonds and one single bond
14. Buckminsterfullerene is an allotropic form of
A. Phosphorus
B. Sulphur
C. Carbon
D. Tin
15. Which of the given is not an aliphatic hydrocarbon?
A. Ethene
B. Ethane
C. Propyne
D. Benzene
16. “In the given reaction, alkaline KMnO₄ acts as: CH₃ + CH₂ + OH ⟶Alkaline KMO₄ + Heat ⟶ CH₃ + COOH”
A. Reducing agent
B. Oxidising agent
C. Catalyst
D. Dehydrating agent
17. Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
A. Addition reaction
B. Substitution reaction
C. Displacement reaction
D. Oxidation reaction
18. In which of the given compounds -OH is the functional group?
A. Butanone
B. Butanol
C. Butanoic
D. Butanal
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19. The soap molecule has a __ Hydrophilic head and a
A. hydrophobic tail
B. Hydrophobic head and a hydrophilic tail
C. Hydrophobic head and a hydrophobic tail
D. Hydrophilic head and a hydrophilic tail
20. Identify the unsaturated compounds from the following.
(a) Propane
(b) Propene
(c) Propyne
(d) Chloropropane
A. (A) & (B)
B. (B) & (D)
C. (C) & (D)
D. (B) & (C)
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21. Complete combustion of a hydrocarbon gives
A. CO+H₂O
B. CO₂+H₂O
C. CO+H₂
D. CO₂+H₂
22. Which is not correct for isomers of a compound?
A. They differ in physical properties
B. They differ in chemical properties
C. They have same molecular formula
D. They have same structural formula
23. Buckminsterfullerene is an example of……………of carbon
A. An isomer
B. An isotope
C. An allotrope
D. A functional group
24. Who prepared urea the first time by heating ammonium cyanate?
A. Wohler
B. Lavosier
C. Fuller
D. Haber
25. Butanone is a four-carbon compound with the functional group ______
A. Carboxylic acid
B. Aldehyde
C. Ketone
D. Alcohol
26. Mineral acids are stronger acids than carboxylic acids because
(a) Mineral acids are completely ionised
(b) Carboxylic acids are completely ionised
(c) Mineral acids are partially ionised
(d) Carboxylic acids are partially ionised
A. (A) & (D)
B. (B) & (C)
C. (A) & (B)
D. (C) & (D)
27. Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of
A. Helium
B. Neon
C. Argon
D. Krypton
28. Major constituent of LPG is……………
A. Ethene
B. Butane
C. Propane
D. Pentane
29. Which of the given does not belong to the same homologous series?
A. CH₄
B. C₂H₆
C. C₃H₈
D. C₄H₈
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30. The name of the compound, CH₃ ─ CH₂ ─ CHO is:
B. Propanone
C. Ethanol
D. Ethanal
31. The heteroatoms present in CH₃ ─ CH₂ ─ O ─ CH₂ ─ CH₂Cl are:
(a) Oxygen
(b) Carbon
(c) Hydrogen
(d) Chlorine
A. (A) & (B)
B. (B) & (C)
C. (C) & (D)
D. (A) & (D)
32. The first member of alkyne homologous series is:
A. Ethyne
B. Ethene
C. Propyne
D. Methane
33. Which of the given is a noble gas?
A. Carbon
B. Argon
C. Nitrogen
D. Hydrogen
34. How many electrons are there in the outermost shell of carbon?
A. 1
B. 2
C. 3
D. 4
35. Which allotrope of carbon is in the form of the geodesic globe?
A. Graphite
B. Diamond
C. Fullerene
D. Carbon nanotube
36. Which of the given has a triple bond?
A. Hydrogen molecule
B. Oxygen molecule
C. Nitrogen molecule
D. Ammonia molecule
37. Which of the given has a double bond?
A. Hydrogen molecule
B. Oxygen molecule
C. Nitrogen molecule
D. Methane molecule
38. How many single bonds are present in methane?
A. Four
B. Five
C. Six
D. Three
39. Subsequent members of homologous series differ by how many atomic mass units?
A. 14
B. 16
C. 24
D. 28
40. How many carbon atoms are present in one molecule of ethanoic acid?
A. One
B. Two
C. Three
D. Four
41. How many carbon atoms are present in one molecule of ethanol?
A. One
B. Two
C. Three
D. Four
42. Functional group – COOH is present in which of the given?
A. Carboxylic acid
B. Alcohol
C. Aldehyde
D. Ketone
43. Functional group – CHO is present in which of the given?
A. Carboxylic acid
B. Alcohol
C. Aldehyde
D. Ketone
44. A hydrocarbon should have a minimum of how many carbon atoms to show isomerism?
A. Three
B. Four
C. Five
D. Six
45. Ethanol reacts with sodium and forms two products. These are
A. Sodium ethanoate and hydrogen
B. Sodium ethanoate and oxygen
C. Sodium ethoxide and hydrogen
D. Sodium ethoxide and oxygen
46. Vinegar is a solution of
A. 50% – 60% acetic acid in alcohol
B 5% – 8% acetic acid in alcohol
C. 5% – 8% acetic acid in water
D. 50% – 60% acetic acid in water
47. Which of the given represents a saponification reaction?
A. CH₃COONa + NaOH + CaO → CH₄ + Na₂CO₃
B. CH₃COOH + C₂H₅ + H₂SO₄ → CH₃COOC₂H₅ + H₂O
C. 2CH₃COOH + 2Na → 2CH₃COONa + H₂
D. CH₃COOC₂H₅ + NaOH → CH₃COONa + C₂H₅OH
48. Which of the given is an odd compound?
A. Ethene
B. Ethane
C. Propene
D. Acetylene
49. Which one of the given is an unsaturated hydrocarbon?
A. Acetylene
B. Butane
C. Propane
D. Decane
50. Two neighbours of homologous series differ by
A. _CH
B. _CH₂
C. _CH₃
D. _CH₄
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Answer Key for Class 10 Science Book Chapter 4 Carbon and Its Compounds MCQs
| Q. No. | Ans. | Q. No. | Ans. | Q. No. | Ans. | Q. No. | Ans. | Q. No. | Ans. |
| 1 | D | 11 | C | 21 | B | 31 | D | 41 | B |
| 2 | D | 12 | D | 22 | D | 32 | A | 42 | A |
| 3 | C | 13 | A | 23 | C | 33 | B | 43 | C |
| 4 | B | 14 | C | 24 | A | 34 | D | 44 | B |
| 5 | A | 15 | D | 25 | C | 35 | C | 45 | A |
| 6 | B | 16 | B | 26 | A | 36 | C | 46 | D |
| 7 | D | 17 | A | 27 | B | 37 | B | 47 | D |
| 8 | C | 18 | B | 28 | B | 38 | A | 48 | B |
| 9 | D | 19 | A | 29 | D | 39 | A | 49 | A |
| 10 | C | 20 | D | 30 | A | 40 | B | 50 | B |
Class 10 Science Chapter-wise MCQ Questions with Answers