Class 10 Science – Most Expected Question Paper 2026 (With Answers)
Sample Question Paper – Practice Only
High School Examination – 2026
Subject: Science (Hindi & English)
Time: 3 Hours
Maximum Marks: 75
Instructions (निर्देश)
सभी प्रश्न अनिवार्य हैं।
प्रश्न 1 से 5 तक वस्तुनिष्ठ प्रश्न हैं।
प्रश्न 6 से 23 तक आंतरिक विकल्प दिए गए हैं।
जहाँ आवश्यक हो साफ व नामांकित चित्र बनाइए।
Section – A (Objective Type Questions)
Q1. Choose the correct option (1×6 = 6)
(i) Dry fruits get rotten if not consumed for a long time due to –
Answer: (b) Rancidity
(ii) Which property is not shown by metals?
Answer: (c) Brittleness
(iii) In graphite, one carbon atom is bonded with how many carbon atoms?
Answer: (d) Three
(iv) Hydrochloric acid is secreted from which part of the digestive system?
Answer: (a) Stomach
(v) Reproduction in Plasmodium occurs through –
Answer: (b) Multiple fission
(vi) Number of sex chromosomes in humans –
Answer: (c) One pair
Q2. Fill in the blanks (1×6 = 6)
(i) Respiration is an Exothermic reaction.
(ii) Complete digestion occurs in the Small intestine.
(iii) Blood pressure is measured by sphygmomanometer.
(iv) Testosterone hormone is secreted by Testes.
(v) Growth hormone is secreted by Pituitary gland.
(vi) Fusion of male and female gamete is called Fertilization.
Q3. Match the columns (1×6 = 6)
Plane mirror – To see the face
Straight line path – Ray of light
Electric current – Ampere
Electric power – Watt
Compass needle – North and south pole
Magnetic material – Iron
Q4. True / False (1×6 = 6)
(i) Formula of slaked lime is CaCO₃ – False
(ii) Acetic acid is found in curd – False
(iii) Asexual reproduction in planaria occurs by budding – False
(iv) Myopia is corrected by convex lens – False
(v) Diamond is the hardest substance – True
(vi) Pyramid of energy is always straight – False
Q5. One word / one line answers (1×6 = 6)
(i) Common name of CaOCl₂ – Bleaching powder
(ii) Formula of ethyne – C₂H₂
(iii) Breakdown of pyruvic acid occurs in – Mitochondria
(iv) Laws of inheritance given by – Mendel
(v) Image formed on retina – Real and inverted
(vi) Relation – V = IR (Ohm’s Law)
Section – B (Short Answer Questions)
Q6. Gas released when acid reacts with metal (2 marks)
Answer: Hydrogen gas is released.
Example: Zn + 2HCl → ZnCl₂ + H₂
Q7. Formation of baking soda / Plaster of Paris (2 marks)
Baking soda:
Na₂CO₃ + NH₄Cl → NaHCO₃ + NH₄Cl
Use: Baking cakes
OR
Plaster of Paris:
CaSO₄·2H₂O → CaSO₄·½H₂O + 1½H₂O
Use: Making statues and casts
Q8. Differences between metals and non-metals (2 marks)
Metals: Lustrous, malleable
Non-metals: Dull, brittle
Q9. Reactivity series / Aqua regia (2 marks)
Reactivity series: K > Na > Ca > Mg > Al > Zn > Fe > Pb > Cu > Ag > Au
Aqua regia: Mixture of HNO₃ and HCl that dissolves gold
Q10. Mendel’s law / Sex determination (2 marks)
Law of dominance: Dominant trait appears in F₁ generation
Sex determination: XX – Female, XY – Male
Q11. Iodized salt / Insulin (2 marks)
Iodized salt: Prevents goitre
Insulin: Controls blood sugar
Q12. Functions of spinal fluid / nerve cell (2 marks)
Spinal fluid: Protects brain, supplies nutrients
Nerve cell: Transmits impulses
Q13. Real vs virtual image / Reflection vs refraction (2 marks)
Real image: Can be obtained on screen
Virtual image: Cannot be obtained on screen
Q14. Heating element alloys / Tungsten filament (2 marks)
Alloys: High resistance and durability
Tungsten: High melting point
Q15. Properties of magnet / Magnetic field (2 marks)
Properties: Attractive force, poles exist
Magnetic field: Current carrying conductor
Q16. Fleming’s rules (2 marks)
Left hand rule: Direction of force
Right hand rule: Direction of induced current
Q17. Scavengers / Biodegradable substances (2 marks)
Scavengers: Clean environment
Biodegradable: Decompose naturally
Section – C (Long Answer Questions)
Q18. Allotropy / Saturated hydrocarbons (3 marks)
Allotropy: Element exists in different forms. Example: Diamond, Graphite
Saturated hydrocarbons: Single bonds only (Methane, Ethane)
Q19. Bisexual flower / Pollination vs fertilization (3 marks)
Bisexual flower: Contains stamens and pistil
Pollination: Transfer of pollen
Fertilization: Fusion of gametes
Q20. Twinkling of stars / Blue sky (3 marks)
Twinkling: Atmospheric refraction
Blue sky: Rayleigh scattering
Q21. Balance chemical equations (4 marks)
HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + 2H₂O
2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O
NaCl + AgNO₃ → AgCl + NaNO₃
BaCl₂ + H₂SO₄ → BaSO₄ + 2HCl
Q22. Human digestive system / Respiration (4 marks)
Digestive system: Mouth, stomach, intestine, liver, pancreas
Aerobic respiration: Uses oxygen
Anaerobic respiration: Without oxygen
Q23. Uses of concave mirror (4 marks)
Headlight: Concave mirror for parallel beam
Solar furnace: Concentrates sunlight
👉 Note: This paper is prepared for practice purpose only and is based on most expected questions for Class 10 Board Exam 2026.
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