Group 16, 17, and 18 MHT CET previous year questions and answers MCQ quiz practice
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Are you preparing for the MHT CET exam of the Maharashtra board? This is the best platform to excel in this exam. You will get the previous year's questions of Physics, Chemistry, Maths, and Biology.
MHT CET important questions Chemistry
Here are questions from 2018 to 2024 included. Groups 16,17, and 18 are significant topics in chemistry
MHT CET periodic table questions
Why Focus on Group 16, 17, and 18?
- These groups are high-weightage chapters in MHT CET Chemistry.
- Direct memory-based questions are asked on atomic properties, trends, compounds, and applications.
- Helps in scoring quick marks since most questions are conceptual and fact-based.
- Questions are often repeated with slight changes in wording.
Tips to Prepare These Topics for MHT CET 2026
- Revise periodic trends: atomic radius, ionization enthalpy, electron affinity, and electronegativity.
- Memorize important compounds of oxygen, sulfur, halogens, and xenon.
- Solve at least 10 years of MHT CET Chemistry PYQs to identify repeated questions.
- Practice MCQs with a timer to improve speed and accuracy.
- Refer to NCERT Class 11 and 12 Chemistry for crystal-clear concepts.
Final Words
MHT CET Group 16, 17, and 18 questions are scoring and must not be skipped in preparation. Practicing previous year solved questions will boost your confidence and help you attempt these questions with 100% accuracy in the exam.
Group 16, 17, and 18 MHT CET previous year questions and answers MCQ quiz practice
📌 Stay tuned with Agastya Classes for more MHT CET PYQ PDFs, chapter-wise important questions, and quizzes to strengthen your preparation.
Group 16, 17, 18, previous year questions
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1. Identify the gas used in Chromatography?
A) Ne
B) Ar
C) Kr
D) He
Explanation: Argon is commonly used in chromatography as a carrier gas.
2. Which among the following noble gases reacts with fluorine to give crystalline fluorides?
A) Xe
B) Ar
C) He
D) Ne
Explanation: Xenon forms stable fluorides like XeF₂, XeF₄, XeF₆.
3. Which among the following oxides can act both as an oxidizing agent as well as reducing agent?
A) P₂O₅
B) N₂O
C) SO₂
D) SO₃
Explanation: SO₂ acts as both oxidizing and reducing agent depending on conditions.
4. Which element from following belongs to Oxygen family?
A) Ca
B) Rb
C) Se
D) Ba
Explanation: Selenium belongs to group 16 (oxygen family).
5. Which among the following hydrogen halides is thermally least stable?
A) HBr
B) HI
C) HCl
D) HF
Explanation: HI has weakest bond, hence least stable thermally.
6. What is the number of lone pairs of electrons in IF₇?
A) 2
B) 3
C) 0
D) 1
Explanation: IF₇ has zero lone pair on central iodine atom.
7. 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, Cl has +7 oxidation state.
8. Which statement from following is true?
A) Electron gain enthalpy of 16 and 17 group elements becomes 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 positive electron gain enthalpy due to stability.
9. Identify amphoteric oxide from following.
A) Na₂O
B) N₂O
C) Al₂O₃
D) SO₃
Explanation: Al₂O₃ reacts with both acids and bases.
10. Identify thiosulphuric acid from following.
A) H₂S₂O₈
B) H₂SO₃
C) H₂SO₅
D) H₂S₂O₃
Explanation: Thiosulphuric acid has formula H₂S₂O₃.
11. Which among the following is group 16 element?
A) Pb
B) Po
C) As
D) Sb
Explanation: Polonium (Po) belongs to group 16 (oxygen family).
12. Which among the following elements does NOT belong to chalcogens?
A) Se
B) S
C) Te
D) Sn
Explanation: Tin (Sn) is a group 14 element, not chalcogen.
13. Which among the following oxoacid of sulphur contains both S=S and S=O bond?
A) H₂S₂O₄
B) H₂S₂O₃
C) H₂SO₂
D) H₂S₂O₅
Explanation: H₂S₂O₄ has one S=S and one S=O linkage.
14. Which element from following is most electronegative?
A) Br
B) Cl
C) O
D) At
Explanation: Oxygen is most electronegative in given options.
15. Which gas is used in treatment of Cancer?
A) Rn
B) He
C) Ne
D) Ar
Explanation: Radon gas is used in radiotherapy of cancer.
16. What is the bond angle O–S–O in SO₂ molecule?
A) 180°
B) 119.5°
C) 107°
D) 104.5°
Explanation: SO₂ molecule is bent with bond angle ≈119.5°.
17. Identify the inert gas used for filling balloons?
A) Krypton
B) Neon
C) Helium
D) Argon
Explanation: Helium is light and non-flammable, ideal for balloons.
18. Identify compound having square pyramidal shape from following.
A) ClF₃
B) BrF₅
C) ICl
D) BrF₃
Explanation: BrF₅ has square pyramidal geometry.
19. Which among the following oxides of chlorine has highest thermal stability?
A) HClO
B) HClO₃
C) HClO₂
D) HClO₄
Explanation: Perchloric acid (HClO₄) is most thermally stable.
20. Which element from following combines with hydrogen to form compound having lowest acidic strength?
A) Cl
B) F
C) I
D) Br
Explanation: HF is strongest, HI is weakest acid → I has lowest acidic strength.
21. 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 not used as a preservative.
22. Identify the molecular geometry of XeF₄ from the following.
A) Trigonal planar
B) Octahedral
C) Tetrahedral
D) Square planar
Explanation: XeF₄ has square planar geometry.
23. Which gas mixture is filled in electric bulbs?
A) He and N₂
B) Ar and N₂
C) Ne and He
D) He and O₂
Explanation: Bulbs are filled with argon and nitrogen.
24. Which element does not belong to chalcogens?
A) Se
B) S
C) Te
D) Sn
Explanation: Sn belongs to group 14, not chalcogens.
25. Which element from following belongs to Chalcogen family?
A) K
B) Po
C) Te
D) Sr
26. Which among the following noble gases is used in producing neon signs?
A) Argon
B) Neon
C) Helium
D) Xenon
Explanation: Neon is used in discharge tubes and fluorescent lamps to produce neon signs.
27. Which among the following halogens has the lowest boiling point?
A) Fluorine
B) Chlorine
C) Bromine
D) Iodine
Explanation: Fluorine is the lightest halogen and has the lowest boiling point.
28. Which gas is produced when zinc reacts with dilute hydrochloric acid?
A) Hydrogen
B) Oxygen
C) Nitrogen
D) Carbon dioxide
Explanation: Zn + 2HCl → ZnCl₂ + H₂. Hydrogen gas is released.
29. Which of the following has the highest electronegativity?
A) Fluorine
B) Oxygen
C) Nitrogen
D) Chlorine
Explanation: Fluorine is the most electronegative element with value 3.98.
30. Which acid is called 'oil of vitriol'?
A) Sulphuric acid
B) Nitric acid
C) Hydrochloric acid
D) Acetic acid
Explanation: Concentrated H₂SO₄ is called oil of vitriol.
31. Which oxide of nitrogen is known as laughing gas?
A) NO₂
B) N₂O
C) NO
D) N₂O₅
Explanation: N₂O is called laughing gas and is used as anesthetic.
32. Which gas turns lime water milky?
A) Carbon dioxide
B) Oxygen
C) Nitrogen
D) Hydrogen
Explanation: CO₂ reacts with Ca(OH)₂ to form insoluble CaCO₃, making lime water milky.
33. What is the oxidation number of sulphur in H₂SO₄?
A) +6
B) +4
C) +2
D) 0
Explanation: In H₂SO₄, oxidation number of S = +6.
34. Which halogen is used in the sterilization of drinking water?
A) Fluorine
B) Chlorine
C) Bromine
D) Iodine
Explanation: Chlorine is widely used to sterilize drinking water.
35. Which among the following oxides is amphoteric?
A) ZnO
B) CaO
C) SO₂
D) CO₂
Explanation: ZnO can react with both acids and bases, hence amphoteric.
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