Question 1
Which of the following is an example of a combination reaction?
Correct Answer:
2H₂ + O₂ → 2H₂O
Question 2
When iron nails are placed in copper sulphate solution, the blue colour fades because:
Correct Answer:
copper is displaced by iron and copper metal deposits
Question 3
Which reaction is a double displacement (precipitation) reaction?
Correct Answer:
Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl
Question 4
In the reaction 2PbO + C → 2Pb + CO₂, the substance that is oxidised is:
Correct Answer:
C
Question 5
When the equation Fe + H₂O → Fe₃O₄ + H₂ is balanced, the coefficient of H₂O is:
Correct Answer:
4
Question 1
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Prepare with the Punjab PSEB Matric Science Practice Questions - Punjab School Education Board (PSEB) Matric (Class 10) Science - Physics, Chemistry & Biology Exam practice quiz. This question bank includes 100 questions covering reaction, because, plants, pure, and blue. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Punjab PSEB Matric Science Practice Questions - Punjab School Education Board (PSEB) Matric (Class 10) Science - Physics, Chemistry & Biology Exam

This practice set contains 100 questions from the matching question bank and focuses on reaction, because, plants, pure, and blue. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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