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Class 10 Science Chapter Chemical Reactions and Equations - Part 5

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
35 Questions
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Q1 • MCQ • 1 marks
Which reaction absorbs energy?
Q3 • MCQ • 1 marks
The symbol Δ over a reaction indicates:
Q4 • MCQ • 1 marks
The upward arrow (↑) in an equation indicates:
Q5 • MCQ • 1 marks
The downward arrow (↓) indicates:
Q6 • MCQ • 1 marks
Which reaction gives a white precipitate?
Q7 • MCQ • 1 marks
The precipitate formed in AgNO₃ + NaCl reaction is:
Q8 • MCQ • 1 marks
Which of these is an oxidizing agent?
Q9 • MCQ • 1 marks
Which is a reducing agent?
Q10 • MCQ • 1 marks
Which reaction is used in photography?
Q11 • MCQ • 1 marks
Which one is a chemical change?
Q12 • MCQ • 1 marks
Which reaction follows the law of conservation of mass?
Q13 • MCQ • 1 marks
Which gas is produced when acids react with metals?
Q14 • MCQ • 1 marks
The colour of magnesium flame is:
Q15 • MCQ • 1 marks
Which of the following is NOT evidence of a chemical reaction?
Q16 • MCQ • 1 marks
Which reaction type is represented by Fe + CuSO₄ → FeSO₄ + Cu?
Q17 • MCQ • 1 marks
Which of the following is a double displacement reaction?
Q18 • MCQ • 1 marks
Which chapter concept explains rusting?
Q19 • MCQ • 1 marks
Which is the correct product of Zn + H₂SO₄?
Q20 • MCQ • 1 marks
Which process is undesirable?
Q21 • MCQ • 1 marks
Which process spoils edible oils?
Q22 • MCQ • 1 marks
Which law is verified by balancing chemical equations?
Q23 • MCQ • 1 marks
The reactants are written:
Q24 • MCQ • 1 marks
Products are written:
Q25 • MCQ • 1 marks
Which symbol separates reactants and products?
Q26 • MCQ • 1 marks
Which of the following best summarizes this chapter?
Q27 • MCQ • 1 marks
Which of the following is a chemical equation?
Q28 • MCQ • 1 marks
Which reaction releases hydrogen gas?
Q29 • MCQ • 1 marks
Which reaction is an example of oxidation?
Q30 • MCQ • 1 marks
Which reaction is an example of reduction?
Q31 • MCQ • 1 marks
The gas responsible for combustion is:
Q32 • MCQ • 1 marks
Which metal is commonly galvanized?
Q33 • MCQ • 1 marks
Rust is formed due to:
Q34 • MCQ • 1 marks
Which process increases the shelf life of food?
Q35 • MCQ • 1 marks
Which gas is produced when marble reacts with dilute HCl?
Q36 • MCQ • 1 marks
Which process involves absorption of energy?

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