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Class 10 Science Chapter Chemical Reactions and Equations - Part 6

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
38 Questions
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Q1 • MCQ • 1 marks
Which product is formed when copper oxide is reduced?
Q3 • MCQ • 1 marks
Which reaction gives off heat?
Q4 • MCQ • 1 marks
Which process requires continuous absorption of energy?
Q5 • MCQ • 1 marks
The gas evolved during decomposition of AgCl is:
Q6 • MCQ • 1 marks
Which reaction type is Zn + CuSO₄ → ZnSO₄ + Cu?
Q7 • MCQ • 1 marks
Which metal is more reactive?
Q8 • MCQ • 1 marks
Which chemical change is useful?
Q9 • MCQ • 1 marks
Which is an undesirable chemical change?
Q10 • MCQ • 1 marks
Which chapter topic explains spoilage of food?
Q11 • MCQ • 1 marks
Which process involves oxidation of iron?
Q12 • MCQ • 1 marks
Which scientist proposed the Law of Conservation of Mass?
Q13 • MCQ • 1 marks
Which reaction breaks one compound into simpler substances?
Q14 • MCQ • 1 marks
Which of the following is essential for writing a correct chemical equation?
Q15 • MCQ • 1 marks
Which chapter concept helps explain why food is packed in airtight containers?
Q16 • MCQ • 1 marks
The best definition of a chemical reaction is:
Q17 • MCQ • 1 marks
Which is an example of a displacement reaction?
Q18 • MCQ • 1 marks
Which reaction gives a white precipitate of barium sulphate?
Q19 • MCQ • 1 marks
Which of the following is NOT an exothermic reaction?
Q20 • MCQ • 1 marks
Which process is useful in black-and-white photography?
Q21 • MCQ • 1 marks
Which gas is released when limestone is heated?
Q22 • MCQ • 1 marks
The reaction CaO + H₂O → Ca(OH)₂ is:
Q23 • MCQ • 1 marks
Which metal is deposited on an iron nail dipped in CuSO₄ solution?
Q24 • MCQ • 1 marks
Which process spoils butter kept open for a long time?
Q25 • MCQ • 1 marks
Which type of reaction occurs when electricity is passed through water?
Q26 • MCQ • 1 marks
Which law states that mass is neither created nor destroyed?
Q27 • MCQ • 1 marks
In a balanced equation, the number of atoms on both sides is:
Q28 • MCQ • 1 marks
Which process causes silver articles to turn black?
Q29 • MCQ • 1 marks
Which reaction is represented by: AB → A + B
Q30 • MCQ • 1 marks
Which of these is a combination reaction?
Q31 • MCQ • 1 marks
Which process converts fats into unpleasant-smelling substances?
Q32 • MCQ • 1 marks
Which gas prevents rancidity when filled in food packets?
Q33 • MCQ • 1 marks
The symbol (aq) indicates:
Q34 • MCQ • 1 marks
Which of these is NOT evidence of a chemical reaction?
Q35 • MCQ • 1 marks
Which reaction produces quicklime?
Q36 • MCQ • 1 marks
The oxidation of food materials mainly affects:
Q37 • MCQ • 1 marks
Which gas supports burning?
Q38 • MCQ • 1 marks
Which reaction produces calcium hydroxide?
Q39 • MCQ • 1 marks
Which reaction is an example of a redox reaction?

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