1️⃣ Carbon has a unique ability to form:
- A. Ionic bonds
- B. Triple bonds only
- C. Covalent bonds
- D. Metallic bonds
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✅ C. Covalent bonds
2️⃣ Which of the following is a saturated hydrocarbon? 🧪
- A. Ethene
- B. Ethyne
- C. Ethane
- D. Benzene
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✅ C. Ethane
3️⃣ Carbon forms a large number of compounds because of:
- A. High reactivity
- B. Catenation
- C. Ionic nature
- D. High melting point
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✅ B. Catenation
4️⃣ Which functional group is present in alcohol? 🍷
- A. -CHO
- B. -COOH
- C. -OH
- D. -CO-
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✅ C. -OH
5️⃣ The general formula of alkanes is:
- A. CnH2n
- B. CnH2n+2
- C. CnH2n-2
- D. CnH2n+1
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✅ B. CnH2n+2
6️⃣ Which of the following is not a hydrocarbon?
- A. Methane
- B. Ethene
- C. Ethanoic acid
- D. Ethyne
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✅ C. Ethanoic acid
7️⃣ Which of the following compounds has a carboxylic acid group? 🧴
- A. CH3OH
- B. CH3COOH
- C. C2H6
- D. C2H4
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✅ B. CH3COOH
8️⃣ Which of the following statements is true about carbon compounds?
- A. They are generally ionic
- B. They are good conductors
- C. They have low melting and boiling points
- D. They are always crystalline solids
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✅ C. They have low melting and boiling points
9️⃣ What is the IUPAC name of CH3Cl? 🧪
- A. Methyl chloride
- B. Methanol
- C. Methanoic acid
- D. Chloroethane
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✅ A. Methyl chloride
🔟 The bond formed between carbon and hydrogen in methane is:
- A. Ionic
- B. Coordinate
- C. Covalent
- D. Hydrogen
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✅ C. Covalent
1️⃣1️⃣ What is the IUPAC name of CH3COOH?
- A. Formic acid
- B. Ethanoic acid
- C. Acetic acid
- D. Propanoic acid
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✅ B. Ethanoic acid
1️⃣2️⃣ Which of the following undergoes addition reaction? ➕
- A. Alkane
- B. Alkene
- C. Alcohol
- D. Carboxylic acid
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✅ B. Alkene
1️⃣3️⃣ Which functional group is found in ketones?
- A. -COOH
- B. -CHO
- C. -CO-
- D. -OH
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✅ C. -CO-
1️⃣4️⃣ The compound CH3OH is an example of:
- A. Aldehyde
- B. Alcohol
- C. Ketone
- D. Carboxylic acid
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✅ B. Alcohol
1️⃣5️⃣ Which type of hydrocarbons contain triple bonds?
- A. Alkanes
- B. Alkenes
- C. Alkynes
- D. Aromatics
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✅ C. Alkynes
1️⃣6️⃣ Which of these will decolorize bromine water? 🧪
- A. Ethane
- B. Ethene
- C. Propane
- D. Butane
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✅ B. Ethene
1️⃣7️⃣ Which of the following has a fruity smell? 🍊
- A. Carboxylic acid
- B. Aldehyde
- C. Ester
- D. Ketone
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✅ C. Ester
1️⃣8️⃣ What is the name of CH3-CHO? 🧪
- A. Methanal
- B. Ethanal
- C. Propanal
- D. Ethanoic acid
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✅ B. Ethanal
1️⃣9️⃣ Which gas is produced when ethanol is heated with concentrated sulphuric acid? 🔥
- A. Ethene
- B. Methane
- C. Hydrogen
- D. Carbon dioxide
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✅ A. Ethene
2️⃣0️⃣ Ethanoic acid reacts with sodium carbonate to form:
- A. CO₂ and salt
- B. H₂ and salt
- C. O₂ and water
- D. CO and water
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✅ A. CO₂ and salt
2️⃣1️⃣ Which process is used to convert ethanol to ethanoic acid? 🔁
- A. Distillation
- B. Neutralization
- C. Oxidation
- D. Fermentation
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✅ C. Oxidation
2️⃣2️⃣ Which substance is used as a catalyst in the conversion of ethanol to ethene?
- A. Concentrated HCl
- B. ZnCl₂
- C. Concentrated H₂SO₄
- D. NaOH
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✅ C. Concentrated H₂SO₄
2️⃣3️⃣ What happens in a substitution reaction?
- A. One atom replaces another
- B. Atoms rearrange
- C. Chain breaks
- D. Addition of atoms
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✅ A. One atom replaces another
2️⃣4️⃣ Ethanol is commonly known as:
- A. Grain alcohol
- B. Wood spirit
- C. Acetic acid
- D. Methanol
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✅ A. Grain alcohol
2️⃣5️⃣ Which of the following is an unsaturated hydrocarbon?
- A. Propane
- B. Butane
- C. Ethene
- D. Methane
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✅ C. Ethene
2️⃣6️⃣ The process of forming large molecules from small ones is:
- A. Isomerism
- B. Polymerization
- C. Cracking
- D. Distillation
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✅ B. Polymerization
2️⃣7️⃣ Which one is used as an antiseptic in wounds? 💊
- A. Ethanoic acid
- B. Iodine
- C. Ethanol
- D. Methane
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✅ C. Ethanol
2️⃣8️⃣ Which hydrocarbon shows isomerism?
- A. Ethane
- B. Methane
- C. Butane
- D. Ethene
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✅ C. Butane
2️⃣9️⃣ Which acid is used in making synthetic vinegar?
- A. Sulphuric acid
- B. Nitric acid
- C. Acetic acid
- D. Carbonic acid
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✅ C. Acetic acid
3️⃣0️⃣ The compound CH3COOC2H5 is an:
- A. Acid
- B. Ester
- C. Alcohol
- D. Alkane
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✅ B. Ester
31. Which gas is evolved when sodium reacts with ethanol?
- A. Oxygen
- B. Carbon dioxide
- C. Hydrogen
- D. Nitrogen
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✅ C. Hydrogen
32. Which of the following represents a homologous series?
- A. CH4, C2H6, C3H8
- B. CH3OH, C2H5OH, C3H7OH
- C. CH3COOH, C2H5COOH, C3H7COOH
- D. All of these
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✅ D. All of these
33. What type of compound is CH3COOH?
- A. Alcohol
- B. Aldehyde
- C. Ketone
- D. Carboxylic acid
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✅ D. Carboxylic acid
34. Which of the following shows a substitution reaction?
- A. Methane with chlorine in sunlight
- B. Ethene with bromine
- C. Ethyne with hydrogen
- D. Ethanol with acetic acid
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✅ A. Methane with chlorine in sunlight
35. Which compound turns blue litmus red?
- A. Ethanol
- B. Ethanoic acid
- C. Methane
- D. Ethene
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✅ B. Ethanoic acid
36. Which of the following is a monomer used in plastics?
- A. Ethene
- B. Propene
- C. Styrene
- D. All of these
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✅ D. All of these
37. Which of the following represents an unsaturated hydrocarbon?
- A. Butane
- B. Pentane
- C. Propene
- D. Ethane
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✅ C. Propene
38. Which compound is used as a preservative in pickles?
- A. Methanol
- B. Ethanoic acid
- C. Ethanol
- D. Propanol
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✅ B. Ethanoic acid
39. When acetic acid reacts with ethanol, the product formed is:
- A. Aldehyde
- B. Ketone
- C. Ester
- D. Ether
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✅ C. Ester
40. What is the molecular formula of benzene?
- A. C6H6
- B. C6H12
- C. C5H10
- D. C6H10
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✅ A. C6H6
41. Which class of organic compound is used in perfumes and flavors?
- A. Alcohols
- B. Ethers
- C. Esters
- D. Ketones
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✅ C. Esters
42. The reaction of ethanoic acid and sodium carbonate releases:
- A. CO2
- B. H2
- C. CH4
- D. O2
🔍 Show Answer
✅ A. CO2
43. Which of the following is an isomer of butane?
- A. Ethene
- B. Methane
- C. Iso-butane
- D. Propane
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✅ C. Iso-butane
44. The property of catenation is shown by:
- A. Hydrogen
- B. Oxygen
- C. Carbon
- D. Nitrogen
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✅ C. Carbon
45. Which of these is the correct molecular formula for propanoic acid?
- A. C2H5COOH
- B. C2H4O2
- C. C3H6O2
- D. CH3COOH
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✅ C. C3H6O2
46. What happens when ethanol burns in air?
- A. It gives CO and H2O
- B. It gives CO2 and H2
- C. It gives CO2 and H2O
- D. It gives H2 and CH4
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✅ C. It gives CO2 and H2O
47. Which of these compounds undergoes substitution reactions?
- A. Ethene
- B. Ethyne
- C. Methane
- D. Ethanol
🔍 Show Answer
✅ C. Methane
48. Which of these has the lowest boiling point?
- A. Propanol
- B. Butanol
- C. Ethanol
- D. Methanol
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✅ D. Methanol
49. Which compound gives vinegar its sour taste?
- A. Methanoic acid
- B. Ethanoic acid
- C. Propanoic acid
- D. Butanoic acid
🔍 Show Answer
✅ B. Ethanoic acid
50. Which of the following is an oxidizing agent used in laboratories?
- A. Dilute HCl
- B. KMnO4
- C. NaCl
- D. NaOH
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✅ B. KMnO4
31. Which gas is evolved when sodium reacts with ethanol?
- A. Oxygen
- B. Carbon dioxide
- C. Hydrogen
- D. Nitrogen
🔍 Show Answer
✅ C. Hydrogen
32. Which of the following represents a homologous series?
- A. CH4, C2H6, C3H8
- B. CH3OH, C2H5OH, C3H7OH
- C. CH3COOH, C2H5COOH, C3H7COOH
- D. All of these
🔍 Show Answer
✅ D. All of these
33. What type of compound is CH3COOH?
- A. Alcohol
- B. Aldehyde
- C. Ketone
- D. Carboxylic acid
🔍 Show Answer
✅ D. Carboxylic acid
34. Which of the following shows a substitution reaction?
- A. Methane with chlorine in sunlight
- B. Ethene with bromine
- C. Ethyne with hydrogen
- D. Ethanol with acetic acid
🔍 Show Answer
✅ A. Methane with chlorine in sunlight
35. Which compound turns blue litmus red?
- A. Ethanol
- B. Ethanoic acid
- C. Methane
- D. Ethene
🔍 Show Answer
✅ B. Ethanoic acid
36. Which of the following is a monomer used in plastics?
- A. Ethene
- B. Propene
- C. Styrene
- D. All of these
🔍 Show Answer
✅ D. All of these
37. Which of the following represents an unsaturated hydrocarbon?
- A. Butane
- B. Pentane
- C. Propene
- D. Ethane
🔍 Show Answer
✅ C. Propene
38. Which compound is used as a preservative in pickles?
- A. Methanol
- B. Ethanoic acid
- C. Ethanol
- D. Propanol
🔍 Show Answer
✅ B. Ethanoic acid
39. When acetic acid reacts with ethanol, the product formed is:
- A. Aldehyde
- B. Ketone
- C. Ester
- D. Ether
🔍 Show Answer
✅ C. Ester
40. What is the molecular formula of benzene?
- A. C6H6
- B. C6H12
- C. C5H10
- D. C6H10
🔍 Show Answer
✅ A. C6H6
41. Which class of organic compound is used in perfumes and flavors?
- A. Alcohols
- B. Ethers
- C. Esters
- D. Ketones
🔍 Show Answer
✅ C. Esters
42. The reaction of ethanoic acid and sodium carbonate releases:
- A. CO2
- B. H2
- C. CH4
- D. O2
🔍 Show Answer
✅ A. CO2
43. Which of the following is an isomer of butane?
- A. Ethene
- B. Methane
- C. Iso-butane
- D. Propane
🔍 Show Answer
✅ C. Iso-butane
44. The property of catenation is shown by:
- A. Hydrogen
- B. Oxygen
- C. Carbon
- D. Nitrogen
🔍 Show Answer
✅ C. Carbon
45. Which of these is the correct molecular formula for propanoic acid?
- A. C2H5COOH
- B. C2H4O2
- C. C3H6O2
- D. CH3COOH
🔍 Show Answer
✅ C. C3H6O2
46. What happens when ethanol burns in air?
- A. It gives CO and H2O
- B. It gives CO2 and H2
- C. It gives CO2 and H2O
- D. It gives H2 and CH4
🔍 Show Answer
✅ C. It gives CO2 and H2O
47. Which of these compounds undergoes substitution reactions?
- A. Ethene
- B. Ethyne
- C. Methane
- D. Ethanol
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✅ C. Methane
48. Which of these has the lowest boiling point?
- A. Propanol
- B. Butanol
- C. Ethanol
- D. Methanol
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✅ D. Methanol
49. Which compound gives vinegar its sour taste?
- A. Methanoic acid
- B. Ethanoic acid
- C. Propanoic acid
- D. Butanoic acid
🔍 Show Answer
✅ B. Ethanoic acid
50. Which of the following is an oxidizing agent used in laboratories?
- A. Dilute HCl
- B. KMnO4
- C. NaCl
- D. NaOH
🔍 Show Answer
✅ B. KMnO4
71. What is the common name of ethanoic acid?
- A. Formic acid
- B. Acetic acid
- C. Vinegar
- D. Both B and C
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✅ D. Both B and C
72. Which compound is prepared in esterification?
- A. Acid
- B. Alcohol
- C. Ester
- D. Aldehyde
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✅ C. Ester
73. Which of the following will not decolorize bromine water?
- A. Ethene
- B. Ethyne
- C. Methane
- D. Propene
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✅ C. Methane
74. Ethanol reacts with sodium to produce:
- A. Sodium hydroxide
- B. Hydrogen gas
- C. Ethene
- D. Acetylene
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✅ B. Hydrogen gas
75. What is the IUPAC name of CH3CH2OH?
- A. Methanol
- B. Ethanol
- C. Propanol
- D. Butanol
🔍 Show Answer
✅ B. Ethanol
76. What is the chemical formula of ethanoic acid?
- A. CH3COOH
- B. HCOOH
- C. C2H5OH
- D. CH3CHO
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✅ A. CH3COOH
77. The reaction between CH3COOH and NaOH gives:
- A. CH3COONa and H2O
- B. CH4 and NaOH
- C. CH3OH and NaCl
- D. CO2 and CH3COONa
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✅ A. CH3COONa and H2O
78. Which compound is responsible for the sweet smell of esters?
- A. Alcohol
- B. Carboxylic acid
- C. Ketone
- D. Ester
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✅ D. Ester
79. Methanoic acid is also called:
- A. Acetic acid
- B. Formic acid
- C. Propionic acid
- D. Butanoic acid
🔍 Show Answer
✅ B. Formic acid
80. Which hydrocarbon has a triple bond?
- A. Ethene
- B. Ethyne
- C. Propane
- D. Butane
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✅ B. Ethyne
81. CH3CH2COOH is the formula of:
- A. Acetic acid
- B. Propanoic acid
- C. Butanoic acid
- D. Methanoic acid
🔍 Show Answer
✅ B. Propanoic acid
82. Functional group in ethanol is:
- A. –COOH
- B. –OH
- C. –CHO
- D. –CO–
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✅ B. –OH
83. Which hydrocarbon is saturated?
- A. Ethene
- B. Butyne
- C. Propane
- D. Ethyne
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✅ C. Propane
84. Which substance is added to ethanol to make it unfit for drinking?
- A. Methanoic acid
- B. Methanol
- C. Acetone
- D. Formaldehyde
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✅ B. Methanol
85. The compound CH3CH2OH on dehydration gives:
- A. Ethyne
- B. Ethene
- C. Acetic acid
- D. Propene
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✅ B. Ethene
86. CH3COOC2H5 is an example of:
- A. Acid
- B. Ester
- C. Alcohol
- D. Ketone
🔍 Show Answer
✅ B. Ester
87. Which reagent is used to test for alcohol?
- A. Alkaline KMnO4
- B. Sodium metal
- C. Lime water
- D. Ammonia solution
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✅ B. Sodium metal
88. CH3CHO is:
- A. Ethanol
- B. Ethanal
- C. Methanol
- D. Methanal
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✅ B. Ethanal
89. The reaction of alkene with hydrogen in presence of catalyst is:
- A. Substitution
- B. Dehydration
- C. Hydrogenation
- D. Oxidation
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✅ C. Hydrogenation
90. Which among the following is an aldehyde?
- A. CH3COOH
- B. CH3CHO
- C. C2H5OH
- D. CH3COCH3
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✅ B. CH3CHO
91. What is the common name of HCOOH?
- A. Acetic acid
- B. Propanoic acid
- C. Formic acid
- D. Butanoic acid
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✅ C. Formic acid
92. Ethanol reacts with CH3COOH in presence of conc. H2SO4 to form:
- A. Ester and water
- B. Ether and acid
- C. Acid and alcohol
- D. Alkene and water
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✅ A. Ester and water
93. Which of the following is used in the manufacture of alcoholic beverages?
- A. Methanol
- B. Ethanol
- C. Propanol
- D. Butanol
🔍 Show Answer
✅ B. Ethanol
94. Which is the correct formula for butyne?
- A. C4H6
- B. C4H10
- C. C4H8
- D. C3H4
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✅ A. C4H6
95. Which hydrocarbon has two carbon atoms and a triple bond?
- A. Ethane
- B. Ethene
- C. Ethyne
- D. Butyne
🔍 Show Answer
✅ C. Ethyne
96. Which substance gives a brisk effervescence with sodium bicarbonate?
- A. Alcohol
- B. Alkene
- C. Carboxylic acid
- D. Ketone
🔍 Show Answer
✅ C. Carboxylic acid
97. Which class of hydrocarbons has general formula CnH2n+2?
- A. Alkanes
- B. Alkenes
- C. Alkynes
- D. Arenes
🔍 Show Answer
✅ A. Alkanes
98. Ethanol undergoes oxidation to give:
- A. Ethene
- B. Ethanoic acid
- C. Acetylene
- D. Propanol
🔍 Show Answer
✅ B. Ethanoic acid
99. The process of adding hydrogen to unsaturated hydrocarbons is called:
- A. Oxidation
- B. Reduction
- C. Hydrogenation
- D. Esterification
🔍 Show Answer
✅ C. Hydrogenation
100. Which functional group is present in esters?
- A. –COOH
- B. –CHO
- C. –CO–
- D. –COO–
🔍 Show Answer
✅ D. –COO–
❓ Frequently Asked Questions – Carbon and Its Compounds Class 10
💡 What are the important topics in Carbon and Its Compounds Class 10?
Key topics include covalent bonding, saturated/unsaturated hydrocarbons, functional groups, homologous series, ethanol, ethanoic acid, and chemical reactions like oxidation and substitution.
📘 How many questions are asked from this chapter in CBSE exams?
Generally, 3–5 marks worth of questions are asked including MCQs, short answers, and concept-based questions. This chapter is scoring with regular practice.
🧠 What’s the best way to prepare MCQs from this chapter?
Focus on understanding NCERT concepts and solving topic-wise MCQs regularly. Practicing previous year questions (PYQs) also boosts your score.
🧪 What is the IUPAC name of vinegar?
The IUPAC name of vinegar is Ethanoic Acid (CH3COOH).
🎯 How can I score full marks in this chapter?
Understand every reaction and functional group from NCERT. Make summary notes, revise formulas, and solve MCQs and assertion-reason questions regularly.
