NEET Chemistry Question Set 6: 25 MCQs on Inorganic Chemistry for NEET Exam

NEET UG 2025: As the NEET exam date approaches, competitive pressure is intensifying for aspirants aiming to secure seats in top medical colleges. In this critical phase of preparation, mastering Inorganic Chemistry — a scoring but often underestimated segment of Chemistry — can make all the difference.

To help students reinforce their conceptual understanding and tackle tricky objective questions, a set of 25 carefully selected MCQs from Inorganic Chemistry has been released.

Inorganic Chemistry – NEET UG 2025 MCQs

1. The element with the highest electronegativity is:
(a) Oxygen
(b) Fluorine
(c) Nitrogen
(d) Chlorine

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2. Which of the following is a noble gas with octet configuration?
(a) He
(b) Ne
(c) Ar
(d) All of the above

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3. Which oxide is amphoteric?
(a) Na₂O
(b) MgO
(c) Al₂O₃
(d) SiO₂

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4. The shape of the [NH₄]⁺ ion is:
(a) Trigonal pyramidal
(b) Tetrahedral
(c) Trigonal planar
(d) Linear

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5. Which of the following forms a colorless solution in water?
(a) CuSO₄
(b) FeCl₃
(c) ZnSO₄
(d) Ni(NO₃)₂

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6. Which of the following is not an actinide?
(a) Thorium
(b) Uranium
(c) Curium
(d) Lutetium

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7. The oxidation state of Mn in KMnO₄ is:
(a) +2
(b) +4
(c) +6
(d) +7

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8. The correct order of increasing ionic radius is:
(a) F⁻ < O²⁻ < N³⁻
(b) N³⁻ < O²⁻ < F⁻
(c) O²⁻ < N³⁻ < F⁻
(d) F⁻ < N³⁻ < O²⁻

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9. The IUPAC name of K₄[Fe(CN)₆] is:
(a) Potassium hexacyanoferrate(III)
(b) Potassium hexacyanoferrate(II)
(c) Tetrapotassium hexacyanoferrate
(d) Potassium ferrocyanide

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10. The central atom in XeF₄ has how many lone pairs?
(a) 0
(b) 1
(c) 2
(d) 3

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11. Which of the following has maximum number of unpaired electrons?
(a) Fe²⁺
(b) Fe³⁺
(c) Mn²⁺
(d) Cr³⁺

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12. The basicity of orthophosphoric acid (H₃PO₄) is:
(a) 1
(b) 2
(c) 3
(d) 4

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13. Which of the following is a Lewis acid?
(a) NH₃
(b) BF₃
(c) H₂O
(d) OH⁻

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14. Which group element shows both +1 and +3 oxidation states?
(a) Group 1
(b) Group 2
(c) Group 13
(d) Group 17

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15. The number of d-electrons in Fe³⁺ is:
(a) 3
(b) 4
(c) 5
(d) 6

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16. Which gas is released when Zn reacts with dil. HCl?
(a) Oxygen
(b) Hydrogen
(c) Nitrogen
(d) Chlorine

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17. The geometry of [Ni(CO)₄] is:
(a) Tetrahedral
(b) Square planar
(c) Trigonal bipyramidal
(d) Octahedral

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18. Which of the following has the highest lattice energy?
(a) NaCl
(b) KCl
(c) RbCl
(d) CsCl

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19. Which of the following is not a greenhouse gas?
(a) CO₂
(b) CH₄
(c) O₂
(d) N₂O

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20. Which of the following is a bidentate ligand?
(a) NH₃
(b) CN⁻
(c) H₂O
(d) C₂O₄²⁻

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21. Which of the following does not show hydrogen bonding?
(a) H₂O
(b) HF
(c) CH₄
(d) NH₃

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22. The oxidation state of Cl in ClO₃⁻ is:
(a) +1
(b) +3
(c) +5
(d) +7

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23. Which of the following is a non-metallic conductor of electricity?
(a) Diamond
(b) Graphite
(c) Phosphorus
(d) Sulfur

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24. The hybridization of Xe in XeF₂ is:
(a) sp³
(b) sp³d
(c) sp³d²
(d) sp²

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25. Brown ring is formed due to presence of:
(a) [Fe(H₂O)₆]³⁺
(b) [Fe(CN)₆]⁴⁻
(c) [Fe(H₂O)₅NO]²⁺
(d) [Fe(NO₃)₄]⁻

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✅ Answer Key:

1.(b), 2.(d), 3.(c), 4.(b), 5.(c) 6.(d), 7.(d), 8.(b), 9.(b), 10.(c) 11.(c), 12.(c), 13.(b), 14.(c), 15.(c) 16.(b), 17.(a), 18.(a), 19.(c), 20.(d) 21.(c), 22.(c), 23.(b), 24.(b), 25.(c)

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Organic Chemistry remains a high-weightage topic in NEET UG, often determining a student’s rank. These 25 tough MCQs provide a comprehensive and challenging set for aspirants aiming to perfect their preparation. Mastering such questions ensures not only better scores but also builds confidence to handle the unexpected in the real exam.