MHT CET Chemistry p-block elements previous year questions and answers
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MHT CET Chemistry Previous Year Questions – Group 16, 17, 18 | Exambuzznow
Why Focus on Group 16, 17, and 18 for MHT CET Chemistry?
- These groups are part of Class 12 Chemistry (p-block elements).
- Questions are mostly conceptual + memory-based, with some application-level numericals.
- Weightage in MHT CET varies between 4–6 marks every year.
MHT CET Chemistry Previous Year Questions – Group 16 (Oxygen Family)
Some important question trends:
- Oxidation states of O, S, Se, Te, Po
- Anomalous properties of oxygen
- Preparation and properties of SO₂, H₂SO₄
- Structures of oxoacids of sulfur
Sample PYQs:
- Why does oxygen show anomalous behavior compared to other group 16 elements?
- Which of the following is the correct structure of H₂SO₄? (Options given)
- Arrange in increasing order of acidic strength: H₂O, H₂S, H₂Se, H₂Te.
MHT CET Chemistry Previous Year Questions – Group 17 (Halogens)
Commonly asked areas:
- Trends in bond dissociation enthalpy and electronegativity
- Preparation of halogen acids (HF, HCl, HBr, HI)
- Oxidizing and reducing nature of halogens
- Interhalogen compounds
Sample PYQs:
- Which of the following halogen acids is the strongest reducing agent?
- Why is HF weaker acid compared to HCl, HBr, HI?
- Write one difference between chlorine and fluorine in terms of reactivity.
For more MHT CET Chemistry previous year questions and study material, visit Exambuzznow.com
MHT CET Chemistry Previous Year Questions – Group 18 (Noble Gases)
- Topics to focus on:
- General inert nature
- Preparation of noble gas compounds (like XeF₂, XeF₄, XeO₃)
- Structures and hybridization of xenon compounds
Uses of noble gases
Sample PYQs:
- Which noble gas forms stable chemical compounds? Give examples.
- Draw the structure of XeF₄ and state its hybridization.
- What is the reason for the chemical inertness of noble gases?
Tips to Score High in MHT CET Chemistry – P-Block Elements
- Revise NCERT Class 12 Chemistry
- Focus on trends in properties (electronegativity, ionization energy, oxidation states).
- Practice at least 50+ PYQs from Group 16, 17, and 18.
- Make a quick flash card for oxoacids of S, halogen compounds, and xenon compounds.
Download MHT CET Chemistry Previous Year Questions PDF
To make your preparation easier, we have compiled MHT CET Chemistry Previous Year Questions for Group 16, 17, and 18 in a free PDF.
Final Words
Practicing MHT CET Chemistry Previous Year Questions (PYQs) from Group 16, Group 17, and Group 18 is a proven way to boost your exam performance. These chapters are not only important for MHT CET but also useful for JEE Main and NEET Chemistry.
So, keep solving, keep revising, and score higher in MHT CET 2025 Chemistry! 🚀
At Exambuzznow, we provide free MHT CET Chemistry PYQ PDFs for Groups 16, 17, and 18.
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1. Which among the following is NOT the use of SO₂ gas?
A) As an antichlor
B) In manufacture of H₂SO₄
C) With conc. H₂SO₄ it form oleum
D) As a preservative
Explanation: SO₂ is used as an antichlor, in H₂SO₄ manufacture and in oleum production, but not as a preservative.
2. Identify amphoteric oxide from following.
A) Na₂O
B) N₂O
C) Al₂O₃
D) SO₃
Explanation: Al₂O₃ is amphoteric, reacts with both acids and bases.
3. Which among the following noble gases reacts with fluorine to give crystalline fluorides?
A) Xe
B) Ar
C) He
D) Ne
Explanation: Only xenon forms stable fluorides like XeF₂, XeF₄, XeF₆.
4. Identify use of Argon from following.
A) In super sonic wind tunnels
B) For production of lasers
C) For producing inert atmosphere in welding
D) For magnetic resonance imaging
Explanation: Argon provides inert atmosphere in welding to prevent oxidation.
5. Which among the following compounds is NOT a colourless gas?
A) ClF
B) ClF₃
C) IF₃
D) IF₇
Explanation: ClF₃ is a yellow-green liquid, not a colourless gas.
6. Identify compound having square pyramidal shape from following.
A) ClF₃
B) BrF₅
C) ICl
D) BrF₃
Explanation: BrF₅ has square pyramidal geometry due to 5 bonding pairs and 1 lone pair.
7. Which element from following combines with hydrogen to form compound having lowest acidic strength?
A) Cl
B) F
C) I
D) Br
Explanation: HI is the strongest acid, HF is weakest. So I has lowest acidic strength bond.
8. Which among the following is group 16 element?
A) Pb
B) Po
C) As
D) Sb
Explanation: Polonium (Po) belongs to group 16.
9. Which among the following hydrogen halides is thermally least stable?
A) HBr
B) HI
C) HCl
D) HF
Explanation: HI has the weakest H–I bond, hence least stable thermally.
10. Identify the gases used to fill in electric bulbs.
A) He and N₂
B) Ar and N₂
C) Ne and He
D) He and O₂
Explanation: Electric bulbs are filled with Argon and Nitrogen to prevent oxidation of filament.
11. Identify the molecular geometry of XeF₄ from the following.
A) Trigonal planar
B) Octahedral
C) Tetrahedral
D) Square planar
Explanation: XeF₄ has 4 bonding pairs and 2 lone pairs, giving square planar geometry.
12. What is the bond angle O–S–O in SO₂ molecule?
A) 180°
B) 119.5°
C) 107°
D) 104.5°
Explanation: SO₂ is bent molecule with bond angle ≈ 119.5°.
13. Which among the following elements does NOT belong to chalcogens?
A) Se
B) S
C) Te
D) Sn
Explanation: Sn is a group 14 element, not a chalcogen.
14. How many electrons are present around sulfur atom in H₂SO₄?
A) 12
B) 2
C) 4
D) 6
Explanation: In H₂SO₄, sulfur has 12 valence electrons around it (expanded octet).
15. Which element from following is most electronegative?
A) Br
B) Cl
C) O
D) At
Explanation: Oxygen has higher electronegativity than Br, Cl, At.
16. Identify thiosulphuric acid from following.
A) H₂S₂O₈
B) H₂SO₃
C) H₂SO₅
D) H₂S₂O₃
Explanation: Thiosulphuric acid is H₂S₂O₃.
17. Which statement from following is true?
A) Electron gain enthalpy of 16 and 17 group elements become more negative down the group
B) Electron gain enthalpy of fluorine is more negative than chlorine
C) Electron gain enthalpy of oxygen is more negative than sulphur
D) Noble gases have large positive electron gain enthalpy
Explanation: Noble gases have large positive electron gain enthalpy due to stable configuration.
18. Which element from following belongs to Oxygen family?
A) Ca
B) Rb
C) Se
D) Ba
Explanation: Selenium belongs to group 16 (oxygen family).
19. Which among following compounds of chlorine possesses Cl atom in highest oxidation state?
A) Perchloric acid
B) Chlorous acid
C) Hypochlorous acid
D) Chloric acid
Explanation: In HClO₄, chlorine has +7 oxidation state, the highest.
20. Which among the following oxides of chlorine has highest thermal stability?
A) HClO
B) HClO₃
C) HClO₂
D) HClO₄
Explanation: HClO₄ (Perchloric acid) is most thermally stable among chlorine oxoacids.
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