📝 CTET Science Solved Questions

Previous-year-pattern Science & Science pedagogy questions with answers & explanations

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📝 Solved CTET Science Questions (Previous-Year Pattern)

These questions follow the exact style of recent CTET Science papers (Paper 2). Each has the correct answer and a clear explanation, so you learn the concept — not just the answer. Want hundreds more with progress tracking? Try our free Science quiz.

Q1. The process by which green plants prepare their own food using sunlight is called:

  1. (A) Respiration
  2. (B) Photosynthesis ✓
  3. (C) Transpiration
  4. (D) Digestion
Answer: (B) — Photosynthesis is the process by which green plants use sunlight, carbon dioxide and water (with chlorophyll) to make their own food (glucose) and release oxygen. This is fundamental NCERT Class 6-8 Science content frequently tested in CTET.

Q2. A teacher conducts a simple hands-on experiment with a magnet and various objects before explaining the concept of magnetism. This approach reflects:

  1. (A) Rote learning
  2. (B) Inquiry-based/discovery learning ✓
  3. (C) Lecture method
  4. (D) Passive learning
Answer: (B) — Letting students explore and observe before formal explanation is inquiry-based or discovery learning — a CTET-favoured pedagogical approach where the teacher facilitates exploration rather than simply transmitting facts.

Q3. The change of water into water vapour upon heating is an example of:

  1. (A) A chemical change
  2. (B) A physical change ✓
  3. (C) An irreversible change
  4. (D) A biological change
Answer: (B) — Evaporation of water into vapour is a physical change: only the state changes (liquid to gas), not the chemical composition, and it is reversible (vapour can condense back to water).

Q4. According to constructivist science pedagogy, a child's existing misconceptions about a scientific concept should be:

  1. (A) Ignored completely
  2. (B) Acknowledged and addressed through guided experience ✓
  3. (C) Punished as wrong answers
  4. (D) Left for the child to discover alone with no support
Answer: (B) — Constructivist science teaching recognises that children bring prior ideas (sometimes misconceptions) and the teacher's role is to surface these and guide the learner toward correct understanding through experience and discussion, not punishment or silence.

Q5. The gas essential for respiration in most living organisms is:

  1. (A) Carbon dioxide
  2. (B) Oxygen ✓
  3. (C) Nitrogen
  4. (D) Hydrogen
Answer: (B) — Most living organisms require oxygen for respiration, the process of breaking down food to release energy. This is core NCERT biology content tested regularly in CTET Science.

Q6. Using a science lab/activity-based approach instead of only textbook teaching primarily helps children to:

  1. (A) Memorise facts faster
  2. (B) Develop scientific temper and process skills through direct experience ✓
  3. (C) Avoid learning theory altogether
  4. (D) Reduce classroom time needed
Answer: (B) — Hands-on, activity-based science teaching builds scientific temper — observation, questioning, hypothesis-testing — and process skills, which are the core goals of NCF-aligned science pedagogy, not just faster fact memorisation.

Q7. A substance that changes colour in the presence of an acid or a base is called a/an:

  1. (A) Catalyst
  2. (B) Indicator ✓
  3. (C) Solvent
  4. (D) Reagent
Answer: (B) — An indicator (like litmus) changes colour depending on whether a substance is acidic or basic. Litmus turns red in acids and blue in bases — a frequently tested NCERT Class 7 concept.

Q8. A teacher uses local, everyday examples (like cooking, farming, or local plants) to teach a science concept. This approach reflects:

  1. (A) Irrelevant teaching
  2. (B) Contextualised, learner-centred teaching ✓
  3. (C) Strict textbook adherence
  4. (D) Rote-based instruction
Answer: (B) — Connecting science concepts to a child's everyday environment and experience makes learning meaningful and contextualised — a core principle of NCF-based, learner-centred science pedagogy that CTET consistently rewards.

Q9. The main function of the human heart is to:

  1. (A) Digest food
  2. (B) Pump blood throughout the body ✓
  3. (C) Filter air
  4. (D) Produce hormones only
Answer: (B) — The heart's primary function is to pump blood, carrying oxygen and nutrients throughout the body via the circulatory system — foundational human biology content in the NCERT Class 7-8 Science syllabus.

Q10. Continuous formative assessment in science teaching is most valuable because it helps the teacher to:

  1. (A) Rank students against each other
  2. (B) Identify gaps in understanding and adjust teaching in real time ✓
  3. (C) Only prepare report cards
  4. (D) Reduce the need for practical work
Answer: (B) — Formative assessment happens during the learning process, letting the teacher spot misunderstandings early and adapt instruction immediately — far more useful for science learning than only ranking or end-of-term grading.
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