Chemistry · Class 12 Science

Uttar Pradesh Upmsp 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: 208
Real-paper Q & A: 0
Sample-paper Q & A

Real board-paper questions available, by year

26 Q2026complete

29 Q2025complete

26 Q2024complete

26 Q2023complete

26 Q2022complete

—2021Exam cancelled (COVID-19)

26 Q2020complete

26 Q2019complete

23 Q2018complete

2021 — Exam cancelled (COVID-19): The UP Board (UPMSP) cancelled the Class-12 Intermediate examination in 2021 due to COVID-19; no annual question paper was conducted or printed that year, so none exists to publish. Results were declared using a formula based on earlier assessments.

UP Board (UPMSP) Intermediate 2026 · Set DZ

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: 70
Questions: 26
Duration: 195 min
Sections: 4

The marks / questions / duration above are the official exam pattern. We currently have 26 of this paper’s questions (100% of the full paper), with 26 fully solved. Questions we couldn’t yet extract or verify are held — never shown as complete.

Sections & marks

Section	Type	Questions	Marks each	Total
Q1–Q6Section Q1–Q6	Section A — Multiple-choice (objective), all compulsory	6	1	6
Q7–Q14Section Q7–Q14	Section C — Short answer I, all compulsory	8	2	16
Q15–Q18Section Q15–Q18	Section D — Short answer II, all compulsory	4	3	12
Q19–Q26Section Q19–Q26	Section E — Long/detailed answer (internal choice), all compulsory	8	—	—
Total		26		70

The question paper

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

Board Examination

Chemistry

UP Board (UPMSP) Intermediate 2026 · Set DZ

Series/Set: DZRoll No. ________

Time Allowed: 3 hr 15 minMaximum Marks: 70

General Instructions

This question paper contains 26 questions divided into 4 sections — Q1–Q6, Q7–Q14, Q15–Q18, Q19–Q26.
Section Q1–Q6 comprises 6 questions of 1 mark each (Section A — Multiple-choice (objective), all compulsory).
Section Q7–Q14 comprises 8 questions of 2 marks each (Section C — Short answer I, all compulsory).
Section Q15–Q18 comprises 4 questions of 3 marks each (Section D — Short answer II, all compulsory).
Section Q19–Q26 comprises 8 questions (Section E — Long/detailed answer (internal choice), all compulsory).

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

Section A

Q1.

Which formula is used to calculate osmotic pressure?

(a) $\pi = CRT$
(b) $\pi = VRT$
(c) $\pi = PVT$
(d) $\pi = nRT$

[1]

Q2.

What is the coordination number of Co in the complex

K_3[Co(C_2O_4)_3]

(a) 3
(b) 4
(c) 5
(d) 6

[1]

Q3.

Which of the following is not a transition metal?

(a) Cu
(b) Cr
(c) Fe
(d) Na

[1]

Q4.

Which of the following is an aldehyde?

(a) $CH_3-\overset{O}{\overset{||}{C}}-H$
(b) $CH_3-CH_2-\overset{O}{\overset{||}{C}}-CH_3$
(c) $CH_3-CH_2-\overset{O}{\overset{||}{C}}-CH_2-CH_3$
(d) $CH_3-\overset{O}{\overset{||}{C}}-CH_3$

[1]

Q5.

Which test is used to differentiate between primary, secondary and tertiary amines?

(a) Brady test
(b) Tollen's test
(c) Hinsberg test
(d) Lucas test

[1]

Q6.

Match the vitamins given in Column (I) with the diseases caused by their deficiency in Column (II): Column (I): A) Vitamin A, B) Vitamin

B_1

, C) Vitamin C, D) Vitamin K, E) Vitamin

B_{12}

. Column (II): a) Increase in clotting time of blood, b) Nightblindness, c) Beri-beri, d) Pernicious anaemia, e) Scurvy.

(a) A-(d), B-(c), C-(e), D-(a), E-(b)
(b) A-(b), B-(c), C-(e), D-(a), E-(d)
(c) A-(a), B-(b), C-(c), D-(d), E-(e)
(d) A-(b), B-(a), C-(e), D-(d), E-(c)

[1]

Page 1 of 5

Section C

Q1.

What is an ideal solution? Mention the characteristics of an ideal solution.

[2]

Q2.

Transition metals, with a few exceptions, are extremely hard and less volatile. Explain.

[2]

Q3.

Write the IUPAC names of the following coordination compounds: (i) [Co(en)₂ClBr]NO₃ (ii) [Ni(NH₃)₄][Pt(CN)₄]

[2]

Q4.

Write the reaction mechanism of unimolecular nucleophilic substitution (SN1) reaction of 2-bromo-2-methyl propane.

[2]

Q5.

45 g ethylene glycol is mixed with 600 g H₂O. Calculate the depression of freezing point of this solution. ( Kf = 1.86 K kg mol⁻¹ )

[2]

Q6.

Represent α-D-(+)-glucopyranose and β-D-(+)-glucopyranose by Haworth structure.

[2]

Q7.

Complete the following chemical reaction: CH₃CH₂CH₂OH xrightarrowPBr₃ [A] xrightarrow[Δ]Alc.KOH [B]

[2]

Q8.

Write the effect of catalyst on the rate of reaction.

[2]

Page 2 of 5

Section D

Q1.

Write short notes on the following: (i) Aldol condensation (ii) Cannizzaro's reaction

[3]

Q2.

What is the colligative property? Write an expression for the determination of molar mass of solute using relative lowering in vapour pressure.

[3]

Q3.

For the following cell reaction, write the half reactions occurring at the anode and cathode and determine electromotive force (EMF) of cell: 2Ag^+ + Cd longrightarrow 2Ag + Cd²⁺ (Given, E°Ag^+/Ag = +0.80 V and E°Cd²⁺/Cd = -0.40 V )

[3]

Q4.

What is Lanthanoid contraction? Write in increasing order of basic nature of oxides (Ln₂O₃) and hydroxides [Ln(OH)₃] of Lanthanoids.

[3]

Section E

Q1.

Write short notes on Etard reaction and Gatterman-Koch reaction.

[4]

Page 3 of 5

Q2.

Explain the crystal field splitting in octahedral complexes with the help of diagram.

[4]

Q3.

Explain Kohlrausch's law. If Lambda°m for NaCl, HCl and NaAc are 126.4, 425.9 and 91.0 S cm² mol⁻¹. Calculate Lambda° for HAc.

[4]

Q4.

Write short notes on the following: (i) Denaturation of proteins (ii) Name and structural formula of bases present in the nucleic acid.

[4]

Q5.

Write the products of the following reactions: (i) Phenol xrightarrowCHCl₃+aq.NaOH ? (ii) Phenol xrightarrowZn/Δ ? **OR** (i) Explain hydrogen bonding in o-nitrophenol and p-nitrophenol. (ii) What is formed in nitration of phenol with conc. HNO₃ ?

[5]

Q6.

Write short notes on the following: (i) Gabriel phthalimide reaction (ii) Hoffmann bromamide reaction. **OR** Write the following chemical reactions: (i) Reaction of ethanolic NH₃ with C₂H₅Cl. (ii) Reaction of ammonia with benzyl chloride, followed by reaction with two moles of CH₃Cl.

[5]

Page 4 of 5

Q7.

Rate constant (K) for a first order reaction is found 5.5 × 10⁻¹⁴s⁻¹. Calculate half-life of this reaction. **OR** For the following first order reaction — N₂O₅(g) longrightarrow 2NO₂(g) + (1)/(2)O₂(g) — the initial concentration of N₂O₅ at 318 K was 1.24 × 10⁻²molL⁻¹. After 60 min. it became 0.20 × 10⁻²molL⁻¹. Calculate rate constant at 318 K.

[5]

Q8.

Reactivity of haloarene increases if electron withdrawing group (-NO₂) is present at ortho or para position. Explain it with example and give reaction mechanism. **OR** Write short notes on the application of the following: (i) DDT (ii) Freon (iii) Carbon tetrachloride (iv) Chloroform (v) Dichloromethane.

[5]

Page 5 of 5