Kerala SSLC Chemistry Question Paper 2025 and Answer Key – Download PDF
The Kerala SSLC (Secondary School Leaving Certificate) Exam 2025 is a significant milestone for Class 10 students in Kerala. Among the various subjects, Chemistry plays a vital role due to its conceptual depth and scoring potential. The exam was conducted from 9:30 AM to 11:15 AM, with an additional 15 minutes allotted for reading the question paper.
Now that the exam is over, students are eagerly looking for the Kerala SSLC Chemistry Question Paper 2025 PDF and the Answer Key to assess their performance. In this blog, we provide a detailed overview of the question paper, along with the answers and the PDF download link.
✅ Kerala SSLC Chemistry Exam 2025: Paper Pattern Overview
The Kerala SSLC Chemistry Question Paper 2025 was structured into four sections and carried a total of 40 marks. The exam duration was 1.5 hours, with an additional 15 minutes for reading the question paper.
Question Paper Format:
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Section A – 1-mark questions
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Section B – 2-mark questions
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Section C – 3-mark questions
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Section D – 4-mark questions
📄 Kerala SSLC Chemistry Question Paper 2025 PDF Download
Students can download the official Kerala SSLC Chemistry Question Paper 2025 PDF by clicking on the link below:
👉 Download PDF
🧪 Kerala SSLC Chemistry Answer Key 2025
The answer key allows students to cross-check their responses and estimate their scores. Here are some of the key questions and their answers:
Section A – (1 Mark Each)
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Which of the given compounds is a mineral of Aluminium?
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(Calamine, Cuprite, Cryolite, Magnetite)
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✅ Answer: Cryolite
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Which polymer is formed from isoprene?
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✅ Answer: Natural Rubber
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Find the total number of atoms in 2 GMM water (H₂O).
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✅ Answer: 3.612 × 10²⁴ atoms
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Product obtained when SO₃ gas is dissolved in concentrated sulfuric acid?
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✅ Answer: Oleum (H₂S₂O₇)
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Many of the metals in _______ block are used as catalysts in the petroleum industry.
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(s, p, d, f)
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✅ Answer: d-block
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Section B – (2 Marks Each)
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Classify the following compounds into alkanes, alkenes, and alkynes:
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C₂H₄, C₅H₁₂, C₃H₈, C₇H₁₂
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✅ Answer:
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Alkanes: C₅H₁₂, C₃H₈
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Alkenes: C₂H₄, C₇H₁₂
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Alkynes: None
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Two gases Oxygen and Nitrogen at STP are given:
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(a) Calculate the number of molecules in 64 g of Oxygen.
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✅ Answer: 1.204 × 10²⁴ molecules
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(b) Calculate the mass of Nitrogen having the same volume as that of 64 g of Oxygen.
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✅ Answer: 56 g
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Section C – (3 Marks Each)
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Identify calcination and roasting reactions:
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(a) Cu₂S ore is converted to Cu₂O by heating.
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✅ Answer: Roasting
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(b) Carbonates and hydroxides of metals decompose to form their oxides.
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✅ Answer: Calcination
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Identify A and B in the reactions:
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(a) CH₃ - OH + CO → (A)
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✅ Answer: Acetic Acid (CH₃COOH)
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(b) CHCl₃ + Cl₂ → (B) + HCl
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✅ Answer: Carbon Tetrachloride (CCl₄)
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Section D – (4 Marks Each)
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Copper is electroplated on an iron bangle:
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(a) Electrolyte used:
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✅ Answer: Copper sulfate (CuSO₄) solution
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(b) Advantage of electroplating:
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✅ Answer: Prevents corrosion and enhances appearance
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(c) Does the intensity of the electrolyte color change? Why?
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✅ Answer: Yes, because Cu²⁺ ions are deposited on iron, reducing their concentration in the solution.
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📝 Exam Analysis and Student Reactions
According to student and teacher feedback, the Chemistry paper was:
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Moderate in difficulty, with a mix of conceptual and application-based questions.
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Balanced coverage of the syllabus with direct and indirect questions.
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Scoring potential for well-prepared students, especially in sections A and B.
📥 How to Download the Official Answer Key
Students can download the official Kerala SSLC Chemistry Answer Key 2025 by visiting the official website of the Kerala Pareeksha Bhavan or through reliable educational portals like Jagranjosh.
✅ Key Takeaway
The Kerala SSLC Chemistry Exam 2025 tested students on their conceptual understanding and problem-solving skills. With the answer key and question paper PDF available, students can now evaluate their performance and predict their scores.
For more updates on Kerala SSLC 2025 results, answer keys, and exam analysis, stay tuned to our website!