SCERT D. El. Ed 2026 - Environmental Science (EVS)

SCERT D. El. Ed 2026 – Environmental Science

SCERT D. El. Ed 2026 – Environmental Science

Environmental Science (EVS) – Part 4

Q1. Local rural environmental management in India is mainly the role of:
  • A. Lok Sabha
  • B. Gram Panchayats
  • C. Supreme Court
  • D. CSE
Correct Answer: B. Gram Panchayats
Q2. Matter is anything that has:
  • A. Mass and occupies space
  • B. Only mass
  • C. Only volume
  • D. Only colour
Correct Answer: A. Mass and occupies space
Q3. Which state of matter has a definite shape and a definite volume?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Correct Answer: A. Solid
Q4. Which state of matter has a definite volume but takes the shape of its container?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Correct Answer: B. Liquid
Q5. In which state of matter are particles farthest apart and easily compressed?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Crystal
Correct Answer: C. Gas
Q6. The change of a solid directly into a gas without passing through liquid state is called:
  • A. Melting
  • B. Sublimation
  • C. Condensation
  • D. Freezing
Correct Answer: B. Sublimation
Q7. Which of the following is an example of a sublimating substance?
  • A. Sand
  • B. Iron
  • C. Camphor
  • D. Glass
Correct Answer: C. Camphor
Q8. Which of the following is a physical change?
  • A. Burning of wood
  • B. Rusting of iron
  • C. Melting of ice
  • D. Souring of milk
Correct Answer: C. Melting of ice
Q9. Which of the following is a chemical change?
  • A. Cutting paper
  • B. Boiling water
  • C. Rusting of iron
  • D. Dissolving sugar in water
Correct Answer: C. Rusting of iron
Q10. The temperature at which a solid changes into a liquid is called its:
  • A. Boiling point
  • B. Freezing point
  • C. Melting point
  • D. Sublimation point
Correct Answer: C. Melting point
Q11. At standard atmospheric pressure, water boils at:
  • A. 0°C
  • B. 50°C
  • C. 100°C
  • D. 212°C
Correct Answer: C. 100°C
Q12. The change of a liquid to gas at the surface, below boiling point, is called:
  • A. Boiling
  • B. Evaporation
  • C. Sublimation
  • D. Condensation
Correct Answer: B. Evaporation
Q13. In a chemical reaction, substances that react are called:
  • A. Products
  • B. Reactants
  • C. Catalysts
  • D. Solvents
Correct Answer: B. Reactants
Q14. The law that states “mass is neither created nor destroyed in a chemical reaction” is the law of:
  • A. Conservation of energy
  • B. Conservation of mass
  • C. Conservation of momentum
  • D. Conservation of charge
Correct Answer: B. Conservation of mass
Q15. The reaction 2Mg + O₂ → 2MgO is an example of:
  • A. Decomposition reaction
  • B. Combination reaction
  • C. Displacement reaction
  • D. Double displacement reaction
Correct Answer: B. Combination reaction
Q16. The reaction CaCO₃ → CaO + CO₂ on heating is an example of:
  • A. Combination
  • B. Decomposition
  • C. Displacement
  • D. Neutralisation
Correct Answer: B. Decomposition
Q17. When zinc is added to copper sulphate solution, copper is displaced. This is a:
  • A. Combination reaction
  • B. Decomposition reaction
  • C. Displacement reaction
  • D. Neutralisation reaction
Correct Answer: C. Displacement reaction
Q18. Mixing solutions of Na₂SO₄ and BaCl₂ produces a white precipitate of:
  • A. Sodium chloride
  • B. Barium sulphate
  • C. Sodium sulphate
  • D. Barium chloride
Correct Answer: B. Barium sulphate
Q19. The burning of methane is represented as CH₄ + 2O₂ → ?
  • A. CO + H₂O
  • B. CO₂ + 2H₂O
  • C. C + 2H₂O
  • D. 2CO + 2H₂
Correct Answer: B. CO₂ + 2H₂O
Q20. Rusting of iron is an example of which type of reaction?
  • A. Reduction
  • B. Oxidation
  • C. Sublimation
  • D. Neutralisation
Correct Answer: B. Oxidation
Q21. Which is NOT an indicator of a chemical change?
  • A. Colour change
  • B. Gas evolution
  • C. Change in shape only
  • D. Formation of precipitate
Correct Answer: C. Change in shape only
Q22. Combustion is a reaction in which a substance reacts with:
  • A. Hydrogen
  • B. Nitrogen
  • C. Oxygen
  • D. Helium
Correct Answer: C. Oxygen
Q23. In a redox reaction, the substance that loses electrons is said to be:
  • A. Reduced
  • B. Oxidised
  • C. Catalysed
  • D. Sublimated
Correct Answer: B. Oxidised
Q24. A balanced chemical equation must have:
  • A. Equal mass on both sides
  • B. Equal numbers of atoms of each element on both sides
  • C. Same colour reactants and products
  • D. Equal volumes of all substances
Correct Answer: B. Equal numbers of atoms of each element on both sides
Q25. The formation of water from 2H₂ + O₂ → 2H₂O is an example of:
  • A. Decomposition
  • B. Combination
  • C. Displacement
  • D. Double displacement
Correct Answer: B. Combination
Q26. Reduction can be defined as:
  • A. Gain of oxygen
  • B. Loss of hydrogen
  • C. Loss of oxygen or gain of hydrogen
  • D. Loss of electrons
Correct Answer: C. Loss of oxygen or gain of hydrogen

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