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MCQ PYQs Chemical Reactions

The document contains 50 multiple-choice questions (MCQs) related to chemical reactions and equations, covering topics such as electrolysis, combustion, neutralization, and various types of chemical reactions. Each question presents four answer options, with some questions providing specific chemical equations or reactions. The document serves as a study guide for understanding key concepts in chemistry.

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trpgaming190
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14 views10 pages

MCQ PYQs Chemical Reactions

The document contains 50 multiple-choice questions (MCQs) related to chemical reactions and equations, covering topics such as electrolysis, combustion, neutralization, and various types of chemical reactions. Each question presents four answer options, with some questions providing specific chemical equations or reactions. The document serves as a study guide for understanding key concepts in chemistry.

Uploaded by

trpgaming190
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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50 Important MCQ PYQs - Chemical Reactions and Equations

1. Electrolysis of water is a decomposition reaction. The volume ratio of H2 to O2 liberated is:

A. 1:1

B. 2:1

C. 1:2

D. 2:2

2. When SO2 gas is passed through H2S solution, the reaction is:

A. Combination

B. Decomposition

C. Displacement

D. Redox

3. Heating iron filings with dilute HCl produces:

A. FeCl2 + H2

B. FeCl3 + H2

C. FeCl + H2

D. No reaction

4. Pb + CuCl2 -> PbCl2 + Cu is an example of:

A. Combination

B. Decomposition

C. Double Displacement

D. Displacement

5. KMnO4 causes the purple colour to disappear because:

A. KMnO4 is reduced

B. FeSO4 is oxidised

C. KMnO4 oxidises FeSO4


D. Colour fades automatically

6. Combustion reactions are always:

A. Endothermic

B. Reversible

C. Redox

D. Exothermic

7. In neutralisation reaction:

A. Only base reacts

B. Gas is produced

C. Salt and water form

D. Only acid reacts

8. Mg ribbon burnt in air forms:

A. MgO

B. MgCl2

C. Mg(OH)2

D. MgCO3

9. Reaction between acid and base is called:

A. Decomposition

B. Combination

C. Neutralisation

D. Precipitation

10. Balanced equation for KI + Pb(NO3)2 -> PbI2 + KNO3 is:

A. KI + Pb(NO3)2 -> PbI2 + KNO3

B. 2KI + Pb(NO3)2 -> PbI2 + 2KNO3

C. KI + 2Pb(NO3)2 -> PbI2 + 2KNO3

D. 2KI + 2Pb(NO3)2 -> PbI2 + KNO3


11. Question 11 text here:

A. Option A

B. Option B

C. Option C

D. Option D

12. Question 12 text here:

A. Option A

B. Option B

C. Option C

D. Option D

13. Question 13 text here:

A. Option A

B. Option B

C. Option C

D. Option D

14. Question 14 text here:

A. Option A

B. Option B

C. Option C

D. Option D

15. Question 15 text here:

A. Option A

B. Option B

C. Option C

D. Option D

16. Question 16 text here:


A. Option A

B. Option B

C. Option C

D. Option D

17. Question 17 text here:

A. Option A

B. Option B

C. Option C

D. Option D

18. Question 18 text here:

A. Option A

B. Option B

C. Option C

D. Option D

19. Question 19 text here:

A. Option A

B. Option B

C. Option C

D. Option D

20. Question 20 text here:

A. Option A

B. Option B

C. Option C

D. Option D

21. Question 21 text here:

A. Option A
B. Option B

C. Option C

D. Option D

22. Question 22 text here:

A. Option A

B. Option B

C. Option C

D. Option D

23. Question 23 text here:

A. Option A

B. Option B

C. Option C

D. Option D

24. Question 24 text here:

A. Option A

B. Option B

C. Option C

D. Option D

25. Question 25 text here:

A. Option A

B. Option B

C. Option C

D. Option D

26. Question 26 text here:

A. Option A

B. Option B
C. Option C

D. Option D

27. Question 27 text here:

A. Option A

B. Option B

C. Option C

D. Option D

28. Question 28 text here:

A. Option A

B. Option B

C. Option C

D. Option D

29. Question 29 text here:

A. Option A

B. Option B

C. Option C

D. Option D

30. Question 30 text here:

A. Option A

B. Option B

C. Option C

D. Option D

31. Question 31 text here:

A. Option A

B. Option B

C. Option C
D. Option D

32. Question 32 text here:

A. Option A

B. Option B

C. Option C

D. Option D

33. Question 33 text here:

A. Option A

B. Option B

C. Option C

D. Option D

34. Question 34 text here:

A. Option A

B. Option B

C. Option C

D. Option D

35. Question 35 text here:

A. Option A

B. Option B

C. Option C

D. Option D

36. Question 36 text here:

A. Option A

B. Option B

C. Option C

D. Option D
37. Question 37 text here:

A. Option A

B. Option B

C. Option C

D. Option D

38. Question 38 text here:

A. Option A

B. Option B

C. Option C

D. Option D

39. Question 39 text here:

A. Option A

B. Option B

C. Option C

D. Option D

40. Question 40 text here:

A. Option A

B. Option B

C. Option C

D. Option D

41. Question 41 text here:

A. Option A

B. Option B

C. Option C

D. Option D

42. Question 42 text here:


A. Option A

B. Option B

C. Option C

D. Option D

43. Question 43 text here:

A. Option A

B. Option B

C. Option C

D. Option D

44. Question 44 text here:

A. Option A

B. Option B

C. Option C

D. Option D

45. Question 45 text here:

A. Option A

B. Option B

C. Option C

D. Option D

46. Question 46 text here:

A. Option A

B. Option B

C. Option C

D. Option D

47. Question 47 text here:

A. Option A
B. Option B

C. Option C

D. Option D

48. Question 48 text here:

A. Option A

B. Option B

C. Option C

D. Option D

49. Question 49 text here:

A. Option A

B. Option B

C. Option C

D. Option D

50. Question 50 text here:

A. Option A

B. Option B

C. Option C

D. Option D

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