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Chemistry · Class 12 Science

Yanam Bieap Class 12 Chemistry — Real Previous-Year Papers

with complete answers

Real previous-year board papers, year by year — the official exam pattern, the full question paper, and every question solved the concept-first way. Distinct from the chapter-wise textbook bank.

2018–2026
Years of papers
8
Total Papers
8
Real Board Papers
0
Sample papers
168
Real-paper Q & A
0
Sample-paper Q & A

Real board-paper questions available, by year

21 Q2026complete
21 Q2025complete
21 Q2024complete
21 Q2023complete
21 Q2022complete
—2021Not available
21 Q2020complete
21 Q2019complete
21 Q2018complete

BIEAP Intermediate Board 2026 · Set ANNUAL

Real board examination

About this paper

The real Class-12 board examination held in 2026. Every question below is solved the concept-first way. Sample papers are labelled honestly — never shown as a past exam.

Total marks
60
Questions
18
Duration
180 min
Sections
3

The marks / questions / duration above are the official exam pattern. We currently have 21 of this paper’s questions (117% of the full paper), with 21 fully solved. Questions we couldn’t yet extract or verify are held — never shown as complete.

Sections & marks

SectionTypeQuestionsMarks eachTotal
Section ASection Section Asubjective10220
Section BSection Section Bsubjective6424
Section CSection Section Csubjective2816
Total1860

The question paper

The questions we hold for this paper, laid out by section. Solutions are on the Answers tab.

Board Examination

Chemistry

BIEAP Intermediate Board 2026 · Set ANNUAL

Series/Set: ANNUALRoll No. ________
Time Allowed: 3 hoursMaximum Marks: 60

General Instructions

  1. This question paper contains 18 questions divided into 3 sections — Section A, Section B, Section C.
  2. Section Section A comprises 10 questions of 2 marks each (subjective).
  3. Section Section B comprises 6 questions of 4 marks each (subjective).
  4. Section Section C comprises 2 questions of 8 marks each (subjective).

Above is the official exam pattern. The questions printed below are those we currently hold for this paper.

Section A

Q1.
What are isotonic solutions ?
[2]
Q2.
What are the pseudo first order reactions ? Give one example.
[2]
Q3.
What is the role of Cryolite in the metallurgy of Aluminium ?
[2]
Q4.
Write the reactions of F2 and Cl2 with water.
[2]
Q5.
What is inert pair effect ?
[2]
Page 1 of 4
Q6.
Calculate the spin only magnetic moment of Fe2+ (aq.) ion.
[2]
Q7.
What is vulcanization of rubber ?
[2]
Q8.
What is PHBV ? How is it useful to man ?
[2]
Q9.
What are artificial sweetening agents ? Give example.
[2]
Q10.
What are disinfectants ? Give example.
[2]
Section B

Q1.
Vapour pressure of water at 293K is 17.535 mm of Hg. Calculate the vapour pressure of the solution at 293K when 25 g of glucose is dissolved in 450 g of water.
[4]
Q2.
Derive Bragg's equation.
[4]
Page 2 of 4
Q3.
What are different types of adsorptions ? Give any four differences between characteristics of these different types.
[4]
Q4.
Differentiate Roasting and Calcination giving examples.
[4]
Q5.
Describe the structures of (a) XeF2 and (b) XeF4
[4]
Q6.
Explain Werner's Theory of Coordination Compounds with suitable examples.
[4]
Q7.
Give the sources of the following Vitamins and name the diseases caused by their deficiency. (a) A (b) D (c) E (d) K
[4]
Q8.
Which compound in each of the following pairs will react faster in SN2 reaction with -OH ? (i) CH3Br or CH3I (ii) (CH3)3CCl or CH3Cl
[4]
Page 3 of 4
Section C

Q1.
(a) Describe the salient features of the Collision Theory of reaction rates of bimolecular reactions. (b) State and explain Kohlrausch's law of independent migration of ions.
[8]
Q2.
(a) Write the chemical reactions that occur in the manufacture of Nitric acid. (b) How is Ozone prepared from Oxygen ? Explain its reaction with : (i) C2H4 (ii) KI
[8]
Q3.
Describe the following reactions : (a) Carbylamine reaction (b) Gattermann reaction (c) HVZ reaction (d) Aldol condensation
[8]
Page 4 of 4