PracticeVideosBlogFlashcardsEspañol
All Practice Exams

100+ Free Tamil Nadu HSE Second Year Chemistry Practice Questions

Tamil Nadu Higher Secondary Second Year (HSE +2 / Class 12) Chemistry under the Directorate of Government Examinations (DGE), Tamil Nadu practice questions are available now; exam metadata is being verified.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately
100+ Questions
100% Free

Loading practice questions...

Same family resources

Explore More Tamil Nadu HSE Second Year / Class 12 (DGE)

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

Tamil Nadu HSE Second Year Accountancy (DGE)

Practice Questions

Tamil Nadu HSE Second Year Advanced Language (Tamil) (DGE)

Practice Questions

Tamil Nadu HSE Second Year Agricultural Science (DGE)

Practice Questions

Tamil Nadu HSE Second Year Basic Automobile Engineering (DGE)

Practice Questions

Tamil Nadu HSE Second Year Basic Civil Engineering (DGE)

Practice Questions

Tamil Nadu HSE Second Year Basic Electrical Engineering (DGE)

Practice Questions
2026 Statistics

Key Facts: Tamil Nadu HSE Second Year Chemistry Exam

10:00–1:15

Official March 2026 HSE+2 theory sitting window including reading/verification time (dge.tn.gov.in timetable)

DGE TN HSE+2 March 2026 public examination timetable

35/100

Minimum pass mark per subject under the HSE new pattern, subject to theory/practical floor rules

DGE HSE_E.pdf scheme of examination

3 hours

Approximate theory writing duration after reading and particulars verification in the public exam schedule

DGE TN HSE+2 March 2026 timetable

DGE TN

Administered by the Directorate of Government Examinations, Chennai, for Tamil Nadu State Board Higher Secondary

dge.tn.gov.in

SCERT syllabus

Class 12 textbooks and syllabus prescribed by SCERT / School Education Department (Samacheer Kalvi)

DGE HSE scheme — syllabus prescribed by SCERT/DSE

English MCQ bank

This practice set is an English-language MCQ study adaptation, not the official mixed written paper

OpenExamPrep practice-content policy

₹150/₹200

School exam fee band for groups without/with practical subjects plus certificate/service charges (concessions apply)

DGE HSE_E.pdf school candidate fee table

March 2026

HSE Second Year public theory examinations scheduled 2–26 March 2026 with practicals 9–14 February 2026

DGE TN official timetable PDF 04.11.2025

Free English MCQ practice for Tamil Nadu HSE +2 Chemistry (DGE). Official paper is mixed written theory on the Samacheer Kalvi Class 12 syllabus — this bank is a study adaptation, not a format simulation.

Sample Tamil Nadu HSE Second Year Chemistry Practice Questions

Try these sample questions to test your Tamil Nadu HSE Second Year Chemistry exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Molality of a solution is defined as the number of moles of solute dissolved in:
A.1 L of solution
B.1 kg of solution
C.1 kg of solvent
D.1 L of solvent
Explanation: Molality (m) = moles of solute / mass of solvent in kg. Unlike molarity, it depends on solvent mass and is temperature-independent.
2Which concentration unit does not change with temperature?
A.Molarity
B.Normality
C.Molality
D.Volume percent
Explanation: Molality is based on mass of solvent, which is temperature-independent. Units that use volume change with temperature.
3A solution is prepared by dissolving 5.85 g of NaCl (M = 58.5 g mol⁻¹) in water to make 250 mL of solution. The molarity is:
A.0.10 M
B.0.20 M
C.0.40 M
D.0.50 M
Explanation: n = 5.85/58.5 = 0.10 mol. V = 0.250 L. M = n/V = 0.10/0.250 = 0.40 mol L⁻¹.
4According to Raoult’s law for a binary ideal solution of volatile liquids, the partial vapour pressure of component A is:
A.p_A = p_A° × x_A
B.p_A = p_A° / x_A
C.p_A = p_A° + x_A
D.p_A = p_A° − x_A
Explanation: Raoult’s law: partial vapour pressure of a volatile component equals its pure-component vapour pressure times its mole fraction: p_A = p_A° · x_A.
5A 0.1 m aqueous solution of a non-volatile non-electrolyte freezes at −0.186 °C. If K_f of water is 1.86 K kg mol⁻¹, the van ’t Hoff factor i is approximately:
A.0.5
B.1.0
C.1.5
D.2.0
Explanation: ΔT_f = i · K_f · m ⇒ 0.186 = i · 1.86 · 0.1 ⇒ i = 1.0. A non-electrolyte that neither associates nor dissociates has i = 1.
6Osmotic pressure of a 0.01 M solution of a non-electrolyte at 27 °C is (R = 0.0821 L atm mol⁻¹ K⁻¹):
A.0.0821 atm
B.0.246 atm
C.0.492 atm
D.2.46 atm
Explanation: π = CRT = (0.01)(0.0821)(300) = 0.2463 atm ≈ 0.246 atm.
7In a body-centred cubic (bcc) unit cell, the number of atoms per unit cell is:
A.1
B.2
C.3
D.4
Explanation: A bcc cell has 8 corner atoms (8 × 1/8 = 1) plus 1 body-centred atom, so Z = 2.
8For a face-centred cubic lattice with edge length a, the atomic radius r satisfies:
A.4r = a√3
B.4r = a√2
C.2r = a
D.4r = a
Explanation: In fcc, atoms touch along the face diagonal: face diagonal = 4r = a√2, so r = a√2/4.
9Schottky defect in an ionic crystal is characterised by:
A.Missing cation–anion pair with overall electroneutrality retained
B.Cation displaced to an interstitial site
C.Extra anion in interstitial site only
D.Electron trapped in an anion vacancy only
Explanation: A Schottky defect is a stoichiometric vacancy pair (cation and anion vacancies in equal numbers) so the crystal remains electrically neutral. Density decreases.
10The packing efficiency of a face-centred cubic (ccp) structure is approximately:
A.52%
B.68%
C.74%
D.100%
Explanation: For fcc/ccp, packing efficiency ≈ 74% (Z = 4, a = 2√2 r). This is the densest packing for equal spheres.

About the Tamil Nadu HSE Second Year Chemistry Practice Questions

Verified exam format metadata for Tamil Nadu Higher Secondary Second Year (HSE +2 / Class 12) Chemistry under the Directorate of Government Examinations (DGE), Tamil Nadu is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.