ISC Chemistry 2026 Specimen Paper with Answers
All 35 questions of the ISC Chemistry 2026 Specimen Paper, in printed order. Open a question to read it in full and see its answer.
- Q1(A)(i) Fill in the blanks by choosing the appropriate word(s) from those given in the brackets: [electrophilic, four, 4-bromophenol… 1 mark · Fill in
- Q1(A)(ii) Fill in the blanks by choosing the appropriate word(s) from those given in the brackets: [electrophilic, four, 4-bromophenol… 1 mark · Fill in
- Q1(A)(iii) Fill in the blanks by choosing the appropriate word(s) from those given in the brackets: [electrophilic, four, 4-bromophenol… 1 mark · Fill in
- Q1(A)(iv) Fill in the blanks by choosing the appropriate word(s) from those given in the brackets: [electrophilic, four, 4-bromophenol… 1 mark · Fill in
- Q1(B)(i) The sum of coordination number and oxidation number of metal ‘M’ in the complex $[\text{M}(\text{en})_2\text{Cl}_2]$ is: 1 mark · MCQ
- Q1(B)(ii) Which of the following orders is correct in spectrochemical series of ligands? (P)… 1 mark · MCQ
- Q1(B)(iii) When Chlorobenzene is heated with aq. ammonia in the presence of $\text{Cu}_2\text{O}$ at high pressure, it gives: 1 mark · MCQ
- Q1(B)(iv) Hydrolysis of sucrose is called: 1 mark · MCQ
- Q1(B)(v) An organic compound with molecular formula $\text{C}_3\text{H}_6\text{O}$ does not give silver mirror test with Tollen’s reagent… 1 mark · MCQ
- Q1(B)(vi) $0\cdot1\text{ M}$ sucrose solution has higher depression in the freezing point than $0\cdot1\text{ M}$ urea solution. Given… 1 mark · Assertion-reason
- Q1(B)(vii) Methoxy ethane reacts with $\text{HI}$ at $373\text{ K}$ to give ethanol and iodomethane. Given below are two statements marked… 1 mark · Assertion-reason
- Q1(C) Vishal set up an experiment to find the resistance of aqueous $\text{KCl}$ solution for different concentrations at… 3 marks · Case based
- Q2 Consider yourself a research scholar in the forensic science department studying the age of a dead biological sample. During one… 2 marks · Numerical
- Q3 Write the chemical equations to convert each of the following: Aniline to bromobenzene Ethyl chloride to propanoic acid 2 marks · Short answer
- Q4 Using IUPAC nomenclature, write the formula for each of the following: hexaamminecobalt (III) sulphate… 2 marks · Short answer
- Q5 When $2\text{ g}$ of benzoic acid ($\text{C}_6\text{H}_5\text{COOH}$) is dissolved in $25\text{ g}$ of benzene, it shows a… 2 marks · Numerical
- Q6 How will you convert the following (write chemical equation): Phenol to salicylaldehyde Formaldehyde to ethanol 2 marks · Short answer
- Q7 The molar conductivities at infinite dilution ($\Lambda_m^\infty$) for $\text{NaI}$, $\text{CH}_3\text{COONa}$ and… 2 marks · Numerical
- Q8 Answer the following: Which divalent metal ion in weak field ligand has maximum paramagnetic character among the first transition… 2 marks · Short answer
- Q9(i) What happens when carbonyl compound is treated with zinc amalgam and concentrated hydrochloric acid? Give chemical equation and… 2 marks · Short answer
- Q9(ii) Write chemical equations to convert each of the following: Acetic acid to acetaldehyde Formaldehyde to urotropine 2 marks · Short answer
- Q10 In general, it is observed that the rate of a chemical reaction becomes double with every $10^\circ\text{C}$ rise in temperature… 2 marks · Numerical
- Q11 Write the chemical equation for each of the following named organic reactions: Hofmann’s degradation reaction Balz-Schiemann… 2 marks · Short answer
- Q12 How will you convert the following? (Write chemical equations) Phenol from benzene sulphonic acid Ethyl alcohol from ethylamine… 3 marks · Short answer
- Q13 Complete and balance the following equations: (a)… 3 marks · Short answer
- Q14 Write the structural formula of the major product formed in each of the following reactions… 3 marks · Short answer
- Q15 Which vitamin deficiency is responsible for xerophthalmia and night blindness? What are the products formed upon hydrolysis of… 3 marks · Short answer
- Q16(i) A $0\cdot01\text{ M}$ solution of $\text{NaCl}$ is diluted by adding water. What will happen to its specific conductivity and… 3 marks · Short answer
- Q16(ii) Calculate the values of $E_{\text{cell}}$ and $\Delta G$ for the following cell reaction at $25^\circ\text{C}$… 3 marks · Numerical
- Q17 The unit of rate constant of a reaction is same as that of its rate of reaction. Find the order of this reaction. Give one… 3 marks · Short answer
- Q18 Identify the compounds [A], [B] and [C] in the following reactions… 3 marks · Short answer
- Q19 What happens when (Give chemical equations): (a) Propanone is treated with $\text{CH}_3\text{MgBr}$ and then hydrolysed. (b)… 5 marks · Long answer
- Q20 An aqueous solution contains $0\cdot63\text{ g}$ of protein in $300\text{ cm}^3$ of water. The osmotic pressure of the solution… 5 marks · Long answer
- Q21(i) Answer the following: When the coordination compound $\text{CoCl}_3\cdot6\text{NH}_3$ is mixed with $\text{AgNO}_3$ solution… 5 marks · Long answer
- Q21(ii) For the complex compound $[\text{Fe}(\text{en})_2\text{Cl}_2]\text{Cl}$, identify the following: (1) Oxidation state (2)… 5 marks · Long answer