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Class 10 Science Chapter Chemical Reactions and Equations - Part 1

NCERT & CBSE Based, Class 10 Science Chapter Chemical Reactions and Equations, how to balance chemical equations. types of reactions, like a campfire burning or iron rusting. Most important MCQs for p...

Class 10th
30 Questions
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Q1 • MCQ • 1 marks
A chemical reaction is indicated by:
Q3 • MCQ • 1 marks
Which of the following is a chemical change?
Q4 • MCQ • 1 marks
Before burning magnesium ribbon, it is cleaned to remove:
Q5 • MCQ • 1 marks
Burning magnesium ribbon produces:
Q6 • MCQ • 1 marks
Which gas is evolved when zinc reacts with dilute HCl?
Q7 • MCQ • 1 marks
Which of the following is a balanced equation?
Q8 • MCQ • 1 marks
A balanced chemical equation obeys:
Q9 • MCQ • 1 marks
Which reaction is a combination reaction?
Q10 • MCQ • 1 marks
Which reaction is a decomposition reaction?
Q11 • MCQ • 1 marks
Thermal decomposition requires:
Q12 • MCQ • 1 marks
Electrolysis of water is:
Q13 • MCQ • 1 marks
Which reaction needs sunlight?
Q14 • MCQ • 1 marks
White silver chloride turns:
Q15 • MCQ • 1 marks
Which salt decomposes in sunlight?
Q16 • MCQ • 1 marks
Which reaction is exothermic?
Q17 • MCQ • 1 marks
Which process absorbs heat?
Q18 • MCQ • 1 marks
Which is a displacement reaction?
Q19 • MCQ • 1 marks
More reactive metal displaces:
Q20 • MCQ • 1 marks
Double displacement reaction generally forms:
Q21 • MCQ • 1 marks
BaCl₂ + Na₂SO₄ forms:
Q22 • MCQ • 1 marks
White precipitate formed is:
Q23 • MCQ • 1 marks
Oxidation means:
Q24 • MCQ • 1 marks
Reduction means:
Q25 • MCQ • 1 marks
Oxidizing agent:
Q26 • MCQ • 1 marks
Reducing agent:
Q27 • MCQ • 1 marks
Which is oxidized?
Q28 • MCQ • 1 marks
CuO + H₂ → Cu + H₂O is:
Q29 • MCQ • 1 marks
Which substance is reduced?
Q30 • MCQ • 1 marks
Rust is:
Q31 • MCQ • 1 marks
Rusting requires:

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