150+ Best Chemistry MCQs for NEET 2025: Practice Questions to Score High

New Delhi: Preparing for NEET 2025? You can’t afford to ignore Chemistry, which plays a major role in scoring high. To help you focus on what matters most, we’ve handpicked the Top 100 Chemistry MCQs based on high-weightage chapters. These questions follow the NEET exam pattern and cover all key topics from Organic, Inorganic, and Physical Chemistry. Practice these questions to improve your accuracy, speed, and confidence in the exam.

Physical Chemistry

Q1. Which of the following compounds has the highest boiling point?

A. Methanol
B. Ethanol
C. Propanol
D. Butanol

Answer: D. Butanol

Q2. Tollen’s reagent is used to distinguish between:

A. Aldehydes and ketones
B. Alcohols and carboxylic acids
C. Aldehydes and alcohols
D. Ketones and acids

Answer: A. Aldehydes and ketones

Q3. Which compound does not give a positive Fehling’s test?

A. Formaldehyde
B. Acetaldehyde
C. Benzaldehyde
D. Propanal

Answer: C. Benzaldehyde

Q4. Iodoform test is given by:

A. Ethanal
B. Methanal
C. Propanal
D. Benzaldehyde

Answer: A. Ethanal

Q5. Which of the following is not a characteristic of ketones?

A. They undergo nucleophilic addition
B. They can form oximes
C. They reduce Tollen’s reagent
D. They can be reduced to alcohols

Answer: C. They reduce Tollen’s reagent

Q6. Glucose is classified as a:

A. Disaccharide
B. Polysaccharide
C. Monosaccharide
D. Oligosaccharide

Answer: C. Monosaccharide

Q7. Which of the following is a non-reducing sugar?

A. Glucose
B. Fructose
C. Maltose
D. Sucrose

Answer: D. Sucrose

Q8. The monomer unit of proteins is:

A. Nucleotides
B. Amino acids
C. Fatty acids
D. Glucose

Answer: B. Amino acids

Q9. Which vitamin is water-soluble?

A. Vitamin A
B. Vitamin D
C. Vitamin E
D. Vitamin C

Answer: D. Vitamin C

Q10. DNA differs from RNA in having:

A. Ribose sugar
B. Thymine base
C. Uracil base
D. Single-stranded form

Answer: B. Thymine base

Q11. The polymer used for making non-stick cookware is:

A. PVC
B. Teflon
C. Nylon-6
D. Bakelite

Answer: B. Teflon

Q12. Natural rubber is a polymer of:

A. Isobutylene
B. Butadiene
C. Isoprene
D. Styrene

Answer: C. Isoprene

Q13. Nylon-6,6 is made from:

A. Adipic acid and ethylenediamine
B. Adipic acid and hexamethylenediamine
C. Sebacic acid and glycine
D. Terephthalic acid and ethylene glycol

Answer: B. Adipic acid and hexamethylenediamine

Q14. Which is a condensation polymer?

A. PVC
B. Polythene
C. Teflon
D. Nylon

Answer: D. Nylon

Q15. Which of the following is a co-polymer?

A. Buna-S
B. Teflon
C. Polythene
D. PVC

Answer: A. Buna-S

Q16. In [Cu(NH₃)₄]²⁺, the oxidation state of Cu is:

A. 0
B. +1
C. +2
D. +3

Answer: C. +2

Q17. Which of the following is a chelating ligand?

A. NH₃
B. EDTA
C. Cl⁻
D. CN⁻

Answer: B. EDTA

Q18. Which of the following is a coordination compound?

A. NaCl
B. KNO₃
C. [Fe(CN)₆]⁴⁻
D. CH₄

Answer: C. [Fe(CN)₆]⁴⁻

Q19. The hybridization of the central metal ion in [Ni(CO)₄] is:

A. sp³
B. dsp²
C. sp²
D. sp

Answer: A. sp³

Q20. Which of the following follows the 18-electron rule?

A. [Fe(CN)₆]³⁻
B. [Ni(CO)₄]
C. [Cu(NH₃)₄]²⁺
D. [Co(NH₃)₆]³⁺

Answer: B. [Ni(CO)₄]

Q21. The IUPAC name of [Co(NH₃)₆]Cl₃ is:

A. Hexaammine cobalt chloride
B. Hexaammine cobalt(III) chloride
C. Cobalt hexaammine trichloride
D. Cobalt(III) hexaammine chloride

Answer: B. Hexaammine cobalt(III) chloride

Q22. Ligands donate electron pairs to form:

A. Ionic bonds
B. Coordinate bonds
C. Covalent bonds
D. Metallic bonds

Answer: B. Coordinate bonds

Q23. Which of the following is a bidentate ligand?

A. NH₃
B. NO₂⁻
C. C₂O₄²⁻
D. CN⁻

Answer: C. C₂O₄²⁻

Inorganic Chemistry

5. The p-Block Elements (continued)

24. The brown gas produced in lead nitrate decomposition is:

• A. NO
• B. NO₂
• C. N₂O
• D. NH₃
  Answer: B. NO₂

25. Which element forms a violet-colored gas?

• A. Chlorine
• B. Fluorine
• C. Bromine
• D. Iodine
  Answer: D. Iodine

26. Which compound is amphoteric?

• A. NaOH
• B. Al(OH)₃
• C. HCl
• D. CaO
  Answer: B. Al(OH)₃

27. Which one is used in the preparation of fertilizers?

• A. HCl
• B. HNO₃
• C. CH₄
• D. NH₃
  Answer: D. NH₃

28. Which element shows maximum covalency?

• A. N
• B. P
• C. S
• D. Cl
  Answer: C. S

29. The bleaching action of chlorine is due to:

• A. Oxidation
• B. Reduction
• C. Adsorption
• D. Precipitation
  Answer: A. Oxidation

30. Dry ice is:

• A. Solid SO₂
• B. Solid CO₂
• C. Solid NH₃
• D. Iodine
  Answer: B. Solid CO₂

Organic Chemistry

6. Some Basic Principles and Techniques

31. IUPAC name of CH₃CH₂CH₂OH is:

• A. Propanol
• B. Ethanol
• C. Propyl alcohol
• D. Butanol
  Answer: A. Propanol

32. Which is the correct order of priority in IUPAC naming?

• A. Alkene > Alkyne > Alcohol
• B. Alcohol > Alkene > Alkyne
• C. Alkyne > Alcohol > Alkene
• D. Alcohol > Alkyne > Alkene
  Answer: B. Alcohol > Alkene > Alkyne

33. Which of the following is a nucleophile?

• A. NH₃
• B. H⁺
• C. NO₂⁺
• D. BF₃
  Answer: A. NH₃

34. Which reaction converts alcohol into aldehyde?

• A. Oxidation
• B. Reduction
• C. Substitution
• D. Addition
  Answer: A. Oxidation

35. What is formed when ethene reacts with HBr?

• A. Ethanol
• B. Bromoethane
• C. Ethyl bromide
• D. Ethyl alcohol
  Answer: C. Ethyl bromide

7. Hydrocarbons

36. Alkynes are:

• A. Saturated
• B. Unsaturated with double bond
• C. Unsaturated with triple bond
• D. Aromatic
  Answer: C. Unsaturated with triple bond

37. The number of π bonds in benzene is:

• A. 1
• B. 2
• C. 3
• D. 6
  Answer: C. 3

38. Which gas is used in welding?

• A. Ethyne
• B. Methane
• C. Ethane
• D. Propane
  Answer: A. Ethyne

39. Toluene is:

• A. Methylbenzene
• B. Ethylbenzene
• C. Phenol
• D. Benzaldehyde
  Answer: A. Methylbenzene

40. Which is more reactive:

• A. Alkane
• B. Alkene
• C. Alkyne
• D. All are same
  Answer: B. Alkene

Organic Chemistry

8. Alcohols, Phenols and Ethers

41. Ethanol reacts with sodium to give:

• A. NaOH
• B. Sodium ethoxide
• C. Sodium carbonate
• D. Sodium acetate
  Answer: B. Sodium ethoxide

42. Phenol is more acidic than alcohol due to:

• A. Inductive effect
• B. Resonance stabilization
• C. Hydrogen bonding
• D. Hyperconjugation
  Answer: B. Resonance stabilization

43. Which is used in preparation of ether?

• A. Alcohol + acid
• B. Alcohol + base
• C. Alcohol + alcohol (in presence of H₂SO₄)
• D. Alcohol + NaOH
  Answer: C. Alcohol + alcohol (in presence of H₂SO₄)

44. IUPAC name of CH₃OCH₂CH₃ is:

• A. Ethyl methyl ether
• B. Methoxyethane
• C. Dimethyl ether
• D. Ethoxy methane
  Answer: B. Methoxyethane

45. Alcohols can be distinguished from phenols using:

• A. Na
• B. FeCl₃
• C. Br₂ water
• D. H₂SO₄
  Answer: B. FeCl₃

9. Aldehydes, Ketones and Carboxylic Acids

46. Aldehydes give silver mirror test with:

• A. Fehling’s solution
• B. Tollen’s reagent
• C. Benedict’s solution
• D. H₂SO₄
  Answer: B. Tollen’s reagent

47. The functional group in ketones is:

• A. –CHO
• B. –CO–
• C. –COOH
• D. –OH
  Answer: B. –CO–

48. Which of the following is an α-hydroxy acid?

• A. Acetic acid
• B. Lactic acid
• C. Formic acid
• D. Oxalic acid
  Answer: B. Lactic acid

49. Which of these gives effervescence with NaHCO₃?

• A. Alcohol
• B. Aldehyde
• C. Ketone
• D. Carboxylic acid
  Answer: D. Carboxylic acid

50. Which reagent converts aldehyde to primary alcohol?

• A. LiAlH₄
• B. H₂O
• C. KMnO₄
• D. FeCl₃
  Answer: A. LiAlH₄

Inorganic Chemistry

10. The d- and f-Block Elements

51. Which ion gives green color in flame test?

• A. Cu²⁺
• B. Ba²⁺
• C. Fe²⁺
• D. Ni²⁺
  Answer: D. Ni²⁺

52. Which element shows variable oxidation states?

• A. Na
• B. Cl
• C. Fe
• D. Al
  Answer: C. Fe

53. Transition elements form colored compounds due to:

• A. d–d transitions
• B. p–p transitions
• C. s–s transitions
• D. Charge transfer
  Answer: A. d–d transitions

54. Which is not a transition element?

• A. Zn
• B. Cu
• C. Cr
• D. Fe
  Answer: A. Zn

55. Which of the following is a lanthanoid?

• A. Zn
• B. Pb
• C. Ce
• D. Bi
  Answer: C. Ce

11. Coordination Compounds

56. Which of the following is a coordination compound?

• A. KCl
• B. Na₂SO₄
• C. [Cu(NH₃)₄]²⁺
• D. CH₃COOH
  Answer: C. [Cu(NH₃)₄]²⁺

57. Ligands are:

• A. Proton donors
• B. Electron donors
• C. Electron acceptors
• D. Neutral molecules only
  Answer: B. Electron donors

58. Coordination number of Co in [Co(NH₃)₆]³⁺ is:

• A. 3
• B. 4
• C. 6
• D. 2
  Answer: C. 6

59. Which is a bidentate ligand?

• A. NH₃
• B. H₂O
• C. CO
• D. Ethylenediamine
  Answer: D. Ethylenediamine

60. The oxidation number of Pt in [PtCl₆]²⁻ is:

• A. +4
• B. +5
• C. +6
• D. +2
  Answer: A. +4

Miscellaneous High-Yield Chapters

12. Biomolecules

61. Glucose is:

• A. Monosaccharide
• B. Disaccharide
• C. Polysaccharide
• D. None
  Answer: A. Monosaccharide

62. The building blocks of proteins are:

• A. Sugars
• B. Amino acids
• C. Fatty acids
• D. Nucleotides
  Answer: B. Amino acids

63. DNA contains:

• A. Ribose sugar
• B. Deoxyribose sugar
• C. Glucose
• D. Galactose
  Answer: B. Deoxyribose sugar

64. Enzymes are:

• A. Proteins
• B. Lipids
• C. Carbohydrates
• D. Vitamins
  Answer: A. Proteins

65. Which vitamin is fat-soluble?

• A. B₁
• B. C
• C. K
• D. B₂
  Answer: C. K

13. Polymers

66. Monomer of PVC is:

• A. Teflon
• B. Ethylene
• C. Vinyl chloride
• D. Styrene
  Answer: C. Vinyl chloride

67. Nylon-6 is made from:

• A. Adipic acid + hexamethylene diamine
• B. Caprolactam
• C. Ethylene glycol + terephthalic acid
• D. Propene
  Answer: B. Caprolactam

68. Teflon is a polymer of:

• A. Vinyl chloride
• B. Tetrafluoroethylene
• C. Ethylene
• D. Styrene
  Answer: B. Tetrafluoroethylene

69. Natural rubber is a polymer of:

• A. Butadiene
• B. Isoprene
• C. Ethylene
• D. Vinyl chloride
  Answer: B. Isoprene

70. Which of the following is a condensation polymer?

• A. PVC
• B. Teflon
• C. Bakelite
• D. Polyethylene
  Answer: C. Bakelite

Chemistry in Everyday Life

71. Drug that reduces fever is called:

• A. Analgesic
• B. Antipyretic
• C. Antibiotic
• D. Antiseptic
  Answer: B. Antipyretic

72. Which of the following is a disinfectant?

• A. Tincture iodine
• B. Dettol
• C. Bleaching powder
• D. Paracetamol
  Answer: C. Bleaching powder

73. The sweetening agent in toothpaste is:

• A. Saccharin
• B. Glucose
• C. Fructose
• D. Aspartame
  Answer: A. Saccharin

74. Antibiotics are used to:

• A. Kill viruses
• B. Treat fungal infections
• C. Kill bacteria
• D. Boost immunity
  Answer: C. Kill bacteria

75. Which is a broad-spectrum antibiotic?

• A. Penicillin
• B. Tetracycline
• C. Aspirin
• D. Morphine
  Answer: B. Tetracycline

Environmental Chemistry

76. Ozone layer protects from:

• A. UV radiation
• B. Infrared radiation
• C. Visible light
• D. Cosmic rays
  Answer: A. UV radiation

77. The major pollutant in photochemical smog is:

• A. CO
• B. NO₂
• C. O₃
• D. SO₂
  Answer: B. NO₂

78. Which of the following is a greenhouse gas?

• A. CO₂
• B. SO₂
• C. O₂
• D. H₂
  Answer: A. CO₂

79. Acid rain is caused by:

• A. CO
• B. NO₂ and SO₂
• C. HCl
• D. NH₃
  Answer: B. NO₂ and SO₂

80. pH of normal rainwater is:

• A. 7
• B. >7
• C. <7
• D. Zero
  Answer: C. <7

Surface Chemistry

81. Which of the following is a colloid?

• A. Salt solution
• B. Sugar solution
• C. Milk
• D. Alcohol
  Answer: C. Milk

82. In adsorption, the substance that gets adsorbed is:

• A. Adsorbent
• B. Adsorbate
• C. Solvent
• D. Precipitate
  Answer: B. Adsorbate

83. Which catalyst is used in the Haber process?

• A. Ni
• B. Fe
• C. Pt
• D. Pd
  Answer: B. Fe

84. Emulsion is:

• A. Liquid in solid
• B. Liquid in liquid
• C. Gas in solid
• D. Gas in gas
  Answer: B. Liquid in liquid

85. Gold sol is:

• A. Lyophilic
• B. Lyophobic
• C. Hydrophobic
• D. None
  Answer: B. Lyophobic

Revision Mix (Important Concepts from Multiple Chapters)

86. Which of the following is an oxidizing agent?

• A. H₂S
• B. Cl₂
• C. H₂
• D. CH₄
  Answer: B. Cl₂

87. A solution that resists change in pH is called:

• A. Buffer
• B. Colloid
• C. Suspension
• D. Emulsion
  Answer: A. Buffer

88. The shape of the CH₄ molecule is:

• A. Trigonal planar
• B. Tetrahedral
• C. Linear
• D. Square planar
  Answer: B. Tetrahedral

89. The number of valence electrons in oxygen is:

• A. 4
• B. 5
• C. 6
• D. 7
  Answer: C. 6

90. Which compound has sp² hybridisation?

• A. CH₄
• B. C₂H₄
• C. C₂H₂
• D. NH₃
  Answer: B. C₂H₄

91. The bond angle in water is:

• A. 90°
• B. 104.5°
• C. 120°
• D. 180°
  Answer: B. 104.5°

92. Which is the strongest acid?

• A. HF
• B. HCl
• C. HBr
• D. HI
  Answer: D. HI

93. The molecular formula of glucose is:

• A. C₆H₁₂O₆
• B. C₆H₆
• C. CH₂O
• D. C₆H₁₀O₅
  Answer: A. C₆H₁₂O₆

94. The major component of natural gas is:

• A. Ethane
• B. Butane
• C. Methane
• D. Propane
  Answer: C. Methane

95. Which halogen is most reactive?

• A. Iodine
• B. Bromine
• C. Fluorine
• D. Chlorine
  Answer: C. Fluorine

96. The bleaching action of SO₂ is due to:

• A. Reduction
• B. Oxidation
• C. Adsorption
• D. Hydrolysis
  Answer: A. Reduction

97. The hybridization of central atom in NH₃ is:

• A. sp
• B. sp²
• C. sp³
• D. sp³d
  Answer: C. sp³

98. The common name of ethanoic acid is:

• A. Vinegar
• B. Methanol
• C. Acetic acid
• D. Formaldehyde
  Answer: C. Acetic acid

99. CH₃COOH + NaHCO₃ gives:

• A. CO₂
• B. CH₄
• C. H₂
• D. SO₂
  Answer: A. CO₂

100. Oxidation involves:

• A. Gain of electrons
• B. Loss of electrons
• C. Loss of protons
• D. Gain of neutrons
  Answer: B. Loss of electrons

These 100 Chemistry MCQs give you the right mix of concept clarity, exam relevance, and targeted practice. Go through each question carefully and try solving them without looking at the answers first. With consistent practice, you’ll strengthen your grip on Chemistry and boost your NEET score. Stay focused, revise smartly, and don’t miss out on any important topic—your success is just practice away!