Multiple Choice Questions (MCQs) for CTET : Science
Explore reliable objective questions for Science tailored for CTET learners. Utilizing these multiple-choice formats ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.
Practice Science MCQs for CTET
Access the complete set of multiple-choice questions for Science below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official CTET textbooks.
These 29 CTET Science Paper 2 multiple choice questions cover science content and pedagogy of science. Each question has the correct answer with a step-by-step explanation and a short teacher's note, so you can practise for the Central Teacher Eligibility Test and check your understanding.
Multiple Choice Questions
Assertion (A): A magnet loses its magnetism if broken in two halves.
Reason (R): The magnetic field is strongest at the poles of magnet.
(a) Both (A) and (R) are true but (R) is not the correct explanation
(b) Both (A) and (R) are true and (R) is the correct explanation for (A)
(c) (A) is true but (R) is false
(d) (A) is false but (R) is true
Show Answer & Explanation
Answer: (d) (A) is false but (R) is true
Explanation:
1. Breaking a magnet gives two smaller magnets, each with its own north and south poles, so A is false.
2. The field is strongest at the poles, so R is true.
Teacher's Note:
1. Magnetic poles cannot be isolated.
2. Iron filings cluster at the poles.
(a) engage students in project work.
(b) conduct more experiments in classroom.
(c) ask more questions to make students attentive in class.
(d) provide variety of learning experiences.
Show Answer & Explanation
Answer: (d) provide variety of learning experiences.
Explanation:
1. Inclusive classrooms must suit learners with different abilities, interests and styles.
2. Providing a variety of learning experiences gives every child a way to learn.
Teacher's Note:
1. Inclusion means respecting diversity in learners.
2. One method alone cannot suit all.
(a) Integrated approach
(b) Conceptual change approach
(c) Discovery approach
(d) Project method approach
Show Answer & Explanation
Answer: (b) Conceptual change approach
Explanation:
1. Students hold alternative conceptions; the conceptual change approach creates cognitive conflict with the old idea.
2. This leads them to accept and build the scientific explanation.
Teacher's Note:
1. Conceptual change is linked to Piaget's disequilibrium and accommodation.
2. Discovery or projects do not specifically target misconceptions.
(a) Bromine
(b) Mercury
(c) Sodium
(d) Magnesium
Show Answer & Explanation
Answer: (b) Mercury
Explanation:
1. Mercury is the only metal that is liquid at room temperature.
2. Bromine is a liquid non-metal; sodium and magnesium are solids.
Teacher's Note:
1. Gallium and caesium melt only slightly above room temperature.
2. Bromine is the liquid non-metal.
(a) Aquatic plants with floating leaves
(b) Aquatic submerged plants
(c) Plants growing in hilly areas
(d) Plants living in deserts
Show Answer & Explanation
Answer: (b) Aquatic submerged plants
Explanation:
1. Transpiration is loss of water vapour into air through stomata.
2. Completely submerged plants have no contact with air, so they do not transpire.
Teacher's Note:
1. Floating leaves have stomata on the upper surface and do transpire.
2. Desert plants transpire but very little.
Match the questions with the corresponding process skill they intend to develop.
Questions:
(A) Which plant is sturdier: the one left in sun or the one left in shade?
(B) Why do you think some seeds are not growing?
(C) How many seeds of each kind are growing?
Process skills: (i) Hypothesizing (ii) Observing (iii) Classifying
(a) A-(ii), B-(i), C-(ii)
(b) A-(i), B-(iii), C-(ii)
(c) A-(ii), B-(iii), C-(i)
(d) A-(iii), B-(i), C-(ii)
Show Answer & Explanation
Answer: (a) A-(ii), B-(i), C-(ii)
Explanation:
1. A and C ask students to look at and count the plants, which is observing.
2. B asks for a possible reason for seeds not growing, which is hypothesizing.
Teacher's Note:
1. Hypothesizing means suggesting a tentative explanation.
2. Counting and comparing by looking are observing skills.
Assertion (A): The teacher should expose the students to various kinds of vibrating bodies.
Reason (R): Observation is an important process skill in teaching-learning of science.
(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) Both (A) and (R) are false.
Show Answer & Explanation
Answer: (a) Both (A) and (R) are true and (R) is the correct explanation of (A).
Explanation:
1. Seeing various vibrating bodies lets students observe that sound is produced by vibration.
2. Since observation is an important process skill, this exposure is justified, so R explains A.
Teacher's Note:
1. Sound is best taught with observation of vibrating strings, drums and tuning forks.
2. Link science concepts with process skills.
(a) 30 degrees and 60 degrees respectively
(b) 60 degrees and 30 degrees respectively
(c) Both 30 degrees
(d) Both 60 degrees
Show Answer & Explanation
Answer: (a) 30 degrees and 60 degrees respectively
Explanation:
1. At mirror A, angle of reflection = angle of incidence = 30°.
2. For perpendicular mirrors the angle of incidence at B is 90° − 30° = 60°, so the angle of reflection at B is 60°.
Teacher's Note:
1. For two mirrors at 90°, the final ray is parallel to the incident ray.
2. Normals of the two mirrors are also at 90°.
(a) Aluminium foil in winter and plastic in summer
(b) Blanket in both the cases
(c) Aluminium in both the cases
(d) Plastic foil in winter and blanket in summer
Show Answer & Explanation
Answer: (b) Blanket in both the cases
Explanation:
1. Ice cream must be kept cold, so heat from the surroundings (30 °C or 3 °C, both warmer than ice cream) must be kept out.
2. A blanket is a poor conductor of heat (good insulator) and traps air, so it works in both seasons.
Teacher's Note:
1. Insulators slow heat flow in either direction.
2. Metals are good conductors and would speed up melting.
What would happen if a copper coin is dropped in a glass filled with mercury and corn oil?
(a) sink at the bottom of the glass.
(b) float over corn oil
(c) float over mercury but sink in corn oil.
(d) float on the top of the glass
Show Answer & Explanation
Answer: (c) float over mercury but sink in corn oil.
Explanation:
1. Copper (8960) is denser than corn oil (900), so it sinks through the oil.
2. Copper is less dense than mercury (13550), so it cannot sink in mercury and floats on it, below the oil.
Teacher's Note:
1. An object floats in a liquid if its density is less than the liquid's.
2. Denser mercury forms the bottom layer.
Assertion: Larger the amplitude of vibrations, louder is the sound.
Reason: Higher the frequency of vibration, higher is the pitch.
(a) Both assertion and reason are correct, and reason is the correct explanation of the assertion
(b) Both assertion and reason are correct, and reason is not the correct explanation of the assertion
(c) Assertion is true but reason is false
(d) Assertion is false but reason is true
Show Answer & Explanation
Answer: (b) Both assertion and reason are correct, and reason is not the correct explanation of the assertion
Explanation:
1. Loudness depends on amplitude, so the assertion is true.
2. Pitch depends on frequency, so the reason is true, but it does not explain loudness.
Teacher's Note:
1. Loudness: amplitude. Pitch: frequency.
2. Both facts are true but unrelated.
(a) Air inside the bottle decreases on heating
(b) Heat creates high pressure inside balloon
(c) Air inside the bottle increases on heating
(d) Heat causes air inside the bottle to expand
Show Answer & Explanation
Answer: (d) Heat causes air inside the bottle to expand
Explanation:
1. On heating, the air in the bottle expands and inflates the balloon.
2. The amount of air does not change; only its volume increases.
Teacher's Note:
1. Gases expand on heating.
2. The mass of air stays the same.
(a) P and Q acquire equal and similar charge
(b) P and Q acquire equal and opposite charge
(c) P and Q acquire unequal and similar charge
(d) P and Q acquire unequal and opposite charge
Show Answer & Explanation
Answer: (b) P and Q acquire equal and opposite charge
Explanation:
1. Rubbing transfers electrons from one object to the other.
2. One loses electrons (positive) and the other gains the same number (negative), so charges are equal and opposite.
Teacher's Note:
1. Charge is conserved.
2. The total charge remains zero.
(A) contains pigment of iron
(B) multiply rapidly when foreign body enters
(C) forms clots to prevent blood loss
(a) A - WBC (White Blood Cells), B - RBC (Red Blood Cells), C - Platelets
(b) A - RBC (Red Blood Cells), B - Platelets, C - WBC (White Blood Cells)
(c) A - RBC (Red Blood Cells), B - WBC (White Blood Cells), C - Platelets
(d) A - Platelets, B - WBC (White Blood Cells), C - RBC (Red Blood Cells)
Show Answer & Explanation
Answer: (c) A - RBC (Red Blood Cells), B - WBC (White Blood Cells), C - Platelets
Explanation:
1. RBCs contain haemoglobin, an iron-containing pigment.
2. WBCs increase in number during infection, and platelets help blood clot.
Teacher's Note:
1. WBC count rises in infection.
2. Platelets are cell fragments needed for clotting.
(a) listening to accounts of students' observations
(b) taking students' questions seriously and answering them
(c) helping students to clarify their questions
(d) encouraging students to check the possible explanations against evidence.
Show Answer & Explanation
Answer: (d) encouraging students to check the possible explanations against evidence.
Explanation:
1. Hypothesizing means suggesting possible explanations and testing them.
2. Encouraging students to check explanations against evidence develops this skill directly.
Teacher's Note:
1. A hypothesis must be testable.
2. Other options relate to observing and questioning skills.
Assertion (A): Sound travels faster in water than in air.
Reason (R): Rigidity of medium impacts the speed of sound.
(a) Both A and R are correct and R is correct explanation for A
(b) Both A and R are correct and R is not correct explanation for A
(c) A is correct and R is incorrect
(d) R is correct and A is incorrect
Show Answer & Explanation
Answer: (a) Both A and R are correct and R is correct explanation for A
Explanation:
1. Sound travels about 1500 m/s in water and about 340 m/s in air, so A is true.
2. Speed depends on the elasticity (rigidity) and density of the medium; water is far less compressible, which explains A.
Teacher's Note:
1. Speed of sound: solids > liquids > gases.
2. Medium is needed for sound.
(A) Diseases like dysentery and malaria are bacterial diseases
(B) Typhoid and tuberculosis are caused by protozoans
(C) Influenza and chicken pox are caused by virus
(D) Polio and most coughs are viral diseases
The correct statement(s) is/are
(a) Only A
(b) Only C
(c) Only A and B
(d) Only C and D
Show Answer & Explanation
Answer: (d) Only C and D
Explanation:
1. Malaria is caused by a protozoan, and typhoid and TB by bacteria, so A and B are wrong.
2. Influenza, chicken pox and polio are viral, and most coughs are viral, so C and D are correct.
Teacher's Note:
1. Bacterial: typhoid, TB, cholera. Protozoal: malaria, amoebic dysentery.
2. Viral: influenza, polio, chickenpox.
(a) M and N are both salts
(b) M is acid and N is base
(c) M is base and N is acid
(d) M is a base and N cannot be known with given information
Show Answer & Explanation
Answer: (b) M is acid and N is base
Explanation:
1. Turmeric turns brick red only in a base, so N is a base.
2. The red colour fades when M is added, so M neutralises the base and is an acid.
Teacher's Note:
1. Turmeric is yellow in acid and neutral solutions.
2. Loss of colour on mixing shows neutralisation.
(a) Iron oxide and Potassium permanganate
(b) Sodium benzoate and sodium metabisulphite
(c) Sodium chloride and citric acid
(d) Vit C (ascorbic acid) and sugar
Show Answer & Explanation
Answer: (a) Iron oxide and Potassium permanganate
Explanation:
1. Sodium benzoate, sodium metabisulphite, salt, citric acid, vitamin C and sugar are all used to preserve food.
2. Iron oxide and potassium permanganate are not food preservatives.
Teacher's Note:
1. Common preservatives: salt, sugar, vinegar, oil, chemicals like sodium benzoate.
2. Potassium permanganate is used to disinfect, not to preserve food.
(a) Boiling of oil, breaking of mug, burning of paper
(b) Dissolving copper sulphate in water, digestion of food, cutting of paper
(c) Breaking of egg, boiling salt water, mixing ink in water
(d) Rusting of iron, burning of paper, cooking of food
Show Answer & Explanation
Answer: (d) Rusting of iron, burning of paper, cooking of food
Explanation:
1. Rusting, burning and cooking all form new substances.
2. The other sets include physical changes like boiling oil, breaking, dissolving and cutting.
Teacher's Note:
1. Chemical change gives new substances and is mostly irreversible.
2. Breaking and cutting are physical changes.
(A) Hydrogen gas is released
(B) No reaction takes place
(C) Test tube becomes cold
(D) Rapid reaction takes place
(a) (A) and (B)
(b) (B) and (C)
(c) (C) and (D)
(d) (A) and (D)
Show Answer & Explanation
Answer: (d) (A) and (D)
Explanation:
1. Zn + 2HCl → ZnCl₂ + H₂: hydrogen is released.
2. Powdered zinc has a large surface area, so the reaction is rapid. It is exothermic, so the tube becomes warm, not cold.
Teacher's Note:
1. Powders react faster than lumps.
2. Metal and acid reactions release heat.
A: Gets broken into simple sugars
B: Gets broken into glycerol
C: Breaks into simpler amino acids
A, B and C respectively are
(a) A-Fats, B-Urea, C-Proteins
(b) A-Urea, B-Fats, C-Proteins
(c) A-Carbohydrates, B-Fats, C-Proteins
(d) A-Proteins, B-Urea, C-Fats
Show Answer & Explanation
Answer: (c) A-Carbohydrates, B-Fats, C-Proteins
Explanation:
1. Carbohydrates are broken into simple sugars like glucose.
2. Fats are broken into fatty acids and glycerol, and proteins into amino acids.
Teacher's Note:
1. Urea is a waste product, not a food.
2. Learn end products: sugars, fatty acids and glycerol, amino acids.
Assertion: Water boils easily at low altitude regions like sea shore.
Reason: Atmospheric pressure is less at lower altitudes.
(a) Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
(c) Assertion is correct but Reason is false.
(d) Both Assertion and Reason are false.
Show Answer & Explanation
Answer: (d) Both Assertion and Reason are false.
Explanation:
1. Atmospheric pressure is higher at low altitude, so the reason is false.
2. High pressure raises the boiling point, so water boils less easily at sea level than on mountains; the assertion is false.
Teacher's Note:
1. Boiling point falls as pressure falls (high altitude).
2. That is why pressure cookers are used in hills.
Statement (S1): Rising sun is not considered as an appropriate guide to locate direction in all seasons.
Statement (S2): Point of sunrise changes continuously.
Statement (S3): During Summer Solstice, the point of sunrise shifts towards South.
Statement (S4): During Winter Solstice, the point of sunrise shifts towards South.
(a) S1, S3
(b) S1, S2
(c) S1, S2, S3
(d) S2, S3, S4
Show Answer & Explanation
Answer: (b) S1, S2
Explanation:
1. The Sun rises exactly in the east only on equinoxes; the point of sunrise shifts gradually through the year, so S1 and S2 are true.
2. In the northern hemisphere sunrise shifts north in summer, so S3 as edited is false.
Teacher's Note:
1. Sunrise moves north of east in summer and south of east in winter (northern hemisphere).
2. Sunrise is east only at the equinoxes.
Assertion (A): Cellulose rich food substances are good source of roughage for human beings.
Reason (R1): Cellulose is not digested by humans and passes through the gut as fibre.
Reason (R2): The cellulose digesting bacteria convert cellulose into fibres.
(a) A is true and R1 is correct explanation for A
(b) A is true and R2 is correct explanation for A
(c) A is false and R1 is true
(d) A is false and R2 is true
Show Answer & Explanation
Answer: (a) A is true and R1 is correct explanation for A
Explanation:
1. Humans cannot digest cellulose, so it passes on as roughage that adds bulk to stool and prevents constipation.
2. So R1 explains A; R2 is not correct because bacteria do not make fibre from cellulose.
Teacher's Note:
1. Roughage is mostly cellulose.
2. Ruminants have bacteria to digest cellulose; humans do not.
(a) Asking students to prepare a chart/poster for exhibition / display
(b) Posing questions to students in a one-on-one conversation
(c) Interviewing students intensively
(d) Asking students to depict their thought processes through concept maps/diagrams/sketches
Show Answer & Explanation
Answer: (a) Asking students to prepare a chart/poster for exhibition / display
Explanation:
1. Interviews, conversations and concept maps show how students think.
2. A chart for display mainly shows a finished product and may be copied, so it reveals little of the thinking.
Teacher's Note:
1. Choose methods that expose reasoning.
2. Products made for display can hide misconceptions.
(a) It is increased
(b) It is reduced
(c) It remains unchanged
(d) It may increase or reduce.
Show Answer & Explanation
Answer: (b) It is reduced
Explanation:
1. Nectar is about 70-80% water.
2. Bees fan their wings and use enzymes to evaporate water, so honey has only about 17-20% water.
Teacher's Note:
1. Low water content prevents spoilage of honey.
2. Bees add enzymes that break down sugars.
(a) Wool
(b) Silk
(c) Fleece
(d) Jute
Show Answer & Explanation
Answer: (b) Silk
Explanation:
1. Silk is known as the strongest natural fibre.
2. Wool and fleece are animal hair fibres that are weaker, and jute is coarse and brittle.
Teacher's Note:
1. Silk comes from the cocoon of the silkworm.
2. Fleece is the wool-bearing hair of sheep.
(a) Drive at a moderate speed as far as possible
(b) Ensure that the tyre pressure is moderately low
(c) Ensure regular maintenance of the vehicle
(d) Switch off engine at red light
Show Answer & Explanation
Answer: (b) Ensure that the tyre pressure is moderately low
Explanation:
1. Low tyre pressure increases rolling resistance and burns more fuel.
2. The other options reduce fuel use.
Teacher's Note:
1. Keep tyres properly inflated.
2. Idling wastes fuel.
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FAQs
You can get most exhaustive CTET Science Paper 2 MCQs with Answers Set 12 for free on StudiesToday.com. These MCQs for CTET are updated for the 2026-27 academic session as per CTET examination standards.
Yes, our CTET Science Paper 2 MCQs with Answers Set 12 include the latest type of questions, such as Assertion-Reasoning and Case-based MCQs. 50% of the CTET paper is now competency-based.
By solving our CTET Science Paper 2 MCQs with Answers Set 12, CTET students can improve their accuracy and speed which is important as objective questions provide a chance to secure 100% marks in the .
Yes, MCQs for CTET have answer key and brief explanations to help students understand logic behind the correct option as its important for 2026 competency-focused CTET exams.
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