Skip to content
← Chemistry

Chemistry · Class 12 Science

Himachal Hpbose 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.

2017–2026
Years of papers
9
Total Papers
9
Real Board Papers
0
Sample papers
304
Real-paper Q & A
0
Sample-paper Q & A

Real board-paper questions available, by year

30 Q2026complete
28 Q2025complete
45 Q2024complete
33 Q2023complete
33 Q2022complete
33 Q2021complete
—2020Not available
28 Q2019complete
28 Q2018complete
46 Q2017complete

HPBOSE Plus Two 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
30
Duration
180 min
Sections
5

The marks / questions / duration above are the official exam pattern. We currently have 30 of this paper’s questions (100% of the full paper), with 30 fully solved. Questions we couldn’t yet extract or verify are held — never shown as complete.

Sections & marks

SectionTypeQuestionsMarks eachTotal
ASection Acompulsory12112
BSection Bcompulsory7214
CSection Ccompulsory5315
DSection Dcompulsory3——
ESection Ecompulsory3515
Total3060

The question paper

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

Board Examination

Chemistry

HPBOSE Plus Two Board 2026 · Set ANNUAL

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

General Instructions

  1. This question paper contains 30 questions divided into 5 sections — A, B, C, D, E.
  2. Section A comprises 12 questions of 1 mark each (compulsory).
  3. Section B comprises 7 questions of 2 marks each (compulsory).
  4. Section C comprises 5 questions of 3 marks each (compulsory).
  5. Section D comprises 3 questions (compulsory).
  6. Section E comprises 3 questions of 5 marks each (compulsory).

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

Section A

compulsory · 1 mark each · 14 of 12 shown

Q1.
Which of the following is the correct example of a solid solution in which the solute is in gas phase?
  • (a) Copper dissolved in gold
  • (b) Camphor in nitrogen gas
  • (c) Hydrogen in palladium
  • (d) All of the above
[1]
Q2.
Which of the following statement is not correct about an inert electrode in a cell?
  • (a) It does not participate in the cell reaction
  • (b) It provides surface either for oxidation or for reduction reaction.
  • (c) It provide surface for conduction of electrons
  • (d) It provide surface for redox reaction.
[1]
Q3.
Formula of rust is :
  • (a) FeO.xH2O
  • (b) Fe3O4.xH2O
  • (c) Fe2O3.xH2O
  • (d) None of the above
[1]
Q4.
Rate constant depends on :
  • (a) Temperature
  • (b) Time
  • (c) Initial concentration
  • (d) None of the above
[1]
Q5.
Electronic configuration of a transition element X in +3 oxidation state is [Ar] 3d^5. What is its atomic number ?
  • (a) 25
  • (b) 26
  • (c) 27
  • (d) 24
[1]
Q6.
Phosgene is :
  • (a) CHCl3
  • (b) CF2Cl2
  • (c) COCl2
  • (d) CHI3
[1]
Page 1 of 5
Q7.
Which of the following reagents will not convert ethyl alcohol into ethyl chloride ? (a) PCl5 (b) NaCl (c) SOCl2 (d) HCl/ZnCl2
[1]
Q8.
The IUPAC name of Formic acid is : (a) Methanoic acid (b) Ethanoic acid (c) Ethandioic acid (d) Methandioic acid
[1]
Q9.
Which is used to preserve biological specimens ? (a) Acetone (b) Acetaldehyde (c) Ethanol (d) Formaldehyde
[1]
Q10.
The correct IUPAC name for CH2=CHCH2NHCH3 is : (a) Allylemethylamine (b) 2-amino-4-pentene (c) 4-aminopent-1-ene (d) N-methylprop-2-en-1-amine
[1]
Q11.
Assertion (A) : Reduction of 1 mole of Cu2+ ions requires 2 Faraday of charge. Reason (R) : 1 Faraday is equal to the charge of 1 mole of electrons. (a) Both (A) and (R) are true and (R) is the correct explanation of (A) (b) Both (A) and (R) are true but (R) is not the correct explanation of (A) (c) (A) is true but (R) is false. (d) (A) is false but (R) is true.
[1]
Q12.
Assertion (A) : The alpha-hydrogen atom in carbonyl compound is less acidic. Reason (R) : The anion formed after the loss of alpha-hydrogen atom is resonance stabilised. (a) Both (A) and (R) are true and (R) is the correct explanation of (A). (b) Both (A) and (R) are true but (R) is not the correct explanation of (A). (c) (A) is true but (R) is false. (d) (A) is false but (R) is true.
[1]
Q13.
[Case study] Depending on the molecule involved in controlling the rate of reaction, nucleophilic substitution reaction can be divided in two categories: nucleophilic unimolecular (SN1) and nucleophilic bimolecular (SN2). Alkyl halide reactivity towards SN1 and SN2 reactions depends on a number of variables, including steric hindrance, stability of the intermediate or transition state and solvent polarity. Primary alkyl halides, followed by secondary and tertiary alkyl halide are most favourable to the SN2 reaction mechanism. In the case of SN1 reactions, this order is reversible. (i) Which of the following is most reactive towards nucleophilic substitution reaction ? (a) CHCl3 (b) CH2=CHCl (c) ClCH2CH=CH2 (d) CH2CH=CHCl
[1]
Q14.
[Case study, continued] (ii) Isopropyl chloride undergoes hydrolysis by (a) SN1 and SN2 mechanism (b) SN1 mechanism (c) SN2 mechanism (d) None of the above
[1]
Section B

compulsory · 2 marks each · 8 of 7 shown

Q1.
Explain the working of dry cell with diagram.
[2]
Page 2 of 5
Q2.
Give the difference between molecularity and order of reaction.
[2]
Q3.
Discuss the nature of bonding in the following co-ordination entity on the basis of valence bond theory : [COF6]3-
[2]
Q4.
(i) Convert Toluene to Benzaldehyde. (1) (ii) What happens when Anisole is treated with CH3Cl/anhydrous AlCl3 ? (1)
[2]
Q5.
Write a short note on Tollen's test.
[2]
Q6.
(i) Write the reaction involved in Aldol condensation. (1) (ii) Predict the product of the given reaction. (1) CH3COONa --NaOH/CaO, delta--> ?
[2]
Q7.
(i) Write the function of enzyme Invertase. (1) (ii) Draw the zwitterion structure. (1)
[2]
Q8.
[Case study, continued] (iii) Explain SN1 and SN2 reactions.
[2]
Section C

compulsory · 3 marks each · 5 of 5 shown

Q1.
(i) Represent the galvanic cell in which the given reaction take place : (1) Zn(s) + Cu2+(aq) -> Zn2+(aq) + Cu(s) (ii) Calculate the equilibrium constant for the reaction (2) Cu(s) + 2Ag+(aq) -> Cu2+(aq) + 2Ag(s) Given that E° cell = 0.46 V
[3]
Page 3 of 5
Q2.
(i) Define the order of reaction. (1) (ii) The rate constants of a reaction at 500 K and 700 K are 0.025 sec-1 and 0.075 sec-1 respectively. Calculate the value of Ea and A. (2)
[3]
Q3.
(i) Write IUPAC name of the complex [Cr(NH3)4Cl2]+. (1) (ii) [Cr(NH3)6]3+ is paramagnetic while [Ni(CN)4]2- is diamagnetic. Explain why? (2)
[3]
Q4.
(i) Among HI, HBr and HCl, HI is most reactive towards alcohols. Why ? (1) (ii) What is Fermentation ? How is ethanol obtained commercially ? Give two uses of ethanol. (2) **OR** (i) Write the Equation of Friedel Craft reaction. (1) (ii) Write short note on Reimer-Tiemann reaction. (2)
[3]
Q5.
(i) Draw the structure of alpha-D-(+)-Glucopyranose. (1) (ii) What is glycogen ? How is it different from starch ? (2)
[3]
Section D

compulsory · 3 of 3 shown

Q1.
(i) Define the colligative properties. (1) (ii) Calculate the mole fraction of ethylene glycol (C2H6O2) in a solution containing 20% of C2H6O2 by mass. (2) (iii) Derive Raoult's law for non volatile solutes and define vapour pressure. (2)
[5]
Page 4 of 5
Q2.
(i) Write the name and atomic number of fourth element of 3d-series. (1) (ii) Write a note on lanthanide contraction. Explain its reason and consequences. (2) (iii) Calculate the magnetic moment of Fe2+ [Fe = 26]. (1) (iv) Draw the structure of chromate ion. (1)
[5]
Q3.
(i) Draw the structure of p-Toluidine. (1) (ii) Write short note on acetylation. (2) (iii) Arrange the following in increasing order of solubility in water : Aniline, ethanamine, 2-ethylethanamine. (1) (iv) Arrange the following amines in decreasing order of Basic strength in gas phase. (1) C2H5NH2, (C2H5)2NH, (C2H5)3N and NH3
[5]
Page 5 of 5