Inorganic Chemistry in NEET rewards exact recall of NCERT facts. This set covers the hydrides, oxoacids and structures of p-block compounds, the colour, magnetism and oxidation states of d- and f-block elements, and the ligands, bonding and isomerism of coordination compounds.
How to practise: read each question and tap the option you think is correct. You will see right away whether you got it, along with a short explanation, and your score is tracked at the bottom of the screen. This set has 15 questions.
Topics covered in this set
- Group 15 hydrides and oxoacids
- Halogens and noble gas compounds
- Diborane structure
- Transition metal ions and dichromate
- Lanthanoids and actinoids
- Ligands, bonding and isomerism in complexes
NEET Chemistry MCQs with answers and explanations
Q1. Which group 15 hydride is the strongest Lewis base?
a) NH₃
b) AsH₃
c) SbH₃
d) PH₃
Q2. In what form does phosphorus pentachloride exist in the solid state?
a) As discrete trigonal bipyramidal PCl₅ molecules
b) As [PCl₆]⁺[PCl₄]⁻
c) As [PCl₄]⁺[PCl₆]⁻
d) As PCl₃ and Cl₂
Q3. Why is phosphorous acid, H₃PO₃, dibasic even though it contains three hydrogen atoms?
a) One hydrogen is lost on heating
b) It forms a dimer in water
c) One hydrogen is bonded directly to phosphorus and is not ionisable
d) Phosphorus is in the +5 oxidation state
Q4. What is the correct order of bond dissociation enthalpy of the halogens?
a) I₂ > Br₂ > Cl₂ > F₂
b) Cl₂ > Br₂ > F₂ > I₂
c) Cl₂ > F₂ > Br₂ > I₂
d) F₂ > Cl₂ > Br₂ > I₂
Q5. What are the hybridisation and shape of XeF₄?
a) sp³d, see-saw
b) sp³, tetrahedral
c) sp³d², square planar
d) sp³d², octahedral
Q6. Which statement about the structure of diborane, B₂H₆, is correct?
a) All six hydrogens lie in one plane with the two boron atoms
b) It has three bridging hydrogens
c) It has four terminal hydrogens and two bridging hydrogens in three-centre two-electron bonds
d) It has a B–B bond and six terminal B–H bonds
Q7. Which of these ions is colourless in aqueous solution?
a) Cu²⁺
b) Zn²⁺
c) Fe³⁺
d) Ti³⁺
Q8. Which 3d series element shows the largest number of oxidation states?
a) Scandium
b) Chromium
c) Iron
d) Manganese
Q9. What happens when the pH of an orange solution of potassium dichromate is raised by adding alkali?
a) It turns purple as permanganate forms
b) It turns yellow as chromate ions form
c) It turns green as Cr³⁺ forms
d) It stays orange
Q10. What is the spin-only magnetic moment of the Cr³⁺ ion? (Cr: Z = 24)
a) 1.73 BM
b) 2.83 BM
c) 4.90 BM
d) 3.87 BM
Q11. Which lanthanoid commonly shows the +4 oxidation state and acts as a strong oxidising agent in that state?
a) Cerium
b) Gadolinium
c) Europium
d) Ytterbium
Q12. Why do actinoids show a wider range of oxidation states than lanthanoids?
a) Actinoids are all radioactive
b) The 5f, 6d and 7s orbitals are close in energy
c) Actinoids have smaller atomic radii
d) Actinoids have no f electrons
Q13. EDTA⁴⁻ (ethylenediaminetetraacetate) is classified as which type of ligand?
a) Ambidentate
b) Bidentate
c) Hexadentate
d) Tetradentate
Q14. According to valence bond theory, what are the hybridisation and number of unpaired electrons in [CoF₆]³⁻?
a) sp³d², 0 unpaired electrons
b) d²sp³, 4 unpaired electrons
c) sp³d², 4 unpaired electrons
d) d²sp³, 0 unpaired electrons
Q15. The complexes [Co(NH₃)₅(NO₂)]Cl₂ and [Co(NH₃)₅(ONO)]Cl₂ show which type of isomerism?
a) Coordination isomerism
b) Linkage isomerism
c) Geometrical isomerism
d) Ionisation isomerism
Quick revision notes
- Group 15 hydride basicity: NH₃ > PH₃ > AsH₃ > SbH₃; H₃PO₃ is dibasic, H₃PO₂ monobasic.
- Halogen bond energy: Cl₂ > Br₂ > F₂ > I₂; XeF₂ linear, XeF₄ square planar, XeF₆ distorted octahedral.
- Colourless ions are d⁰ or d¹⁰ (Sc³⁺, Ti⁴⁺, Zn²⁺, Cu⁺); μ = √[n(n + 2)] BM.
- Cr₂O₇²⁻ (orange) ⇌ CrO₄²⁻ (yellow) with pH; Ce shows +4, Eu and Yb show +2.
- EDTA is hexadentate; NO₂⁻ and SCN⁻ are ambidentate; weak-field F⁻ gives high-spin outer orbital complexes.
Frequently asked questions
Are these NEET previous year questions?
No. They are original practice questions based on the NCERT chapters on p-block elements, d- and f-block elements and coordination compounds.
How should I revise inorganic chemistry for NEET?
Read the NCERT text line by line, make short lists of exceptions and anomalies, and revise structures and colours of common compounds repeatedly.
How do I decide between inner and outer orbital complexes?
Strong-field ligands such as CN⁻ and CO pair the d electrons and use inner (n−1)d orbitals. Weak-field ligands such as F⁻ and H₂O usually leave them unpaired, so outer nd orbitals are used.
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