Punjab 9th Class Chemistry Model Paper 7 Mcqs Test Online

Chemistry Model Paper 7 Mcqs Test Online 9th Class Punjab

Question 1 of 36

Chemistry

1. Electrolyte __________ produces less ions is water:

Ca(OH)₂

H₂SO₄

NaOH

Nacl

Question 1 of 36

Question 2 of 36

2. Which one is strong electrolyte?

Nacl

Benzene

Aestic Acid

Sugar

Question 2 of 36

Question 3 of 36

3. Types of electrochemical cell are:

Question 3 of 36

Question 4 of 36

4. From following reaction reduction is occurring in:

Question 4 of 36

Question 5 of 36

5. Example of non-electrolyte?

CH₂COOH

NaOH

NaCl

Benzono

Question 5 of 36

Question 6 of 36

6. Anode of Downs cells is made of:

Graphite

Steel

Copper

Zinc

Question 6 of 36

Question 7 of 36

7. The oxidation number of hydrogen in metal hydrides is:

–2

–1

Question 7 of 36

Question 8 of 36

8. From following which one is oxidizing:

Hydrogen

Zinc

Chlorine

Oxygen

Question 8 of 36

Question 9 of 36

9. Oxidation number of hydrogen in HCl is:

–1

–2

Question 9 of 36

Question 10 of 36

10. Formation of water from hydrogen and oxygen is ___________ reaction:

Decomposition

Acid + Base

Redox

Neutralization

Question 10 of 36

Question 11 of 36

11. Oxidation no of O₂ in peroxide is:

– 2

– 1

Question 11 of 36

Question 12 of 36

12. Which one of the following reaction is a oxidation reaction?

K⁺ + 1e⁻ → K

Cl₂ + 2e⁻ → 2Cl⁻

Na⁺¹ + 1e → Na

Fa⁺² → 2Fe⁺³ + 1e⁻

Question 12 of 36

Question 13 of 36

13. Oxidation number of free element is:

Question 13 of 36

Question 14 of 36

14. Nelson cell is used along gases to prepare caustic Soda. Which gas is produced on Cathode?

H₂

Cl₂

O₂

O₃

Question 14 of 36

Question 15 of 36

15. The formula of rust is:

Fe(OH)₃.nH₂O

Fe₂O₃.nH₂O

Fe(OH)₃

Fe₂O₃

Question 15 of 36

Question 16 of 36

16. In the redox reaction between Zn and HCl the oxidizing agent is:

Cl⁻

H⁺

H₂

Question 16 of 36

Question 17 of 36

17. The oxidation number of oxygen in OF₂ is:

– 2

+ 2

– 1

+ 1

Question 17 of 36

Question 18 of 36

18. Which one of the following is non electrolytes?

Acetic Acid Solution

Sodium Chloride Solution

Sugar Solution

Sulphuric Acid Solution

Question 18 of 36

Question 19 of 36

19. From following which one is not react with light HCl?

Potassium

Calcium

Carbon

Sodium

Question 19 of 36

Question 20 of 36

20. In which cell spontaneous chemical reaction takes place?

Downs Cell

Electrolytic Cell

Nelson’s Cell

Galvanic Cell

Question 20 of 36

Question 21 of 36

21. Production of O₂ during any chemical reaction is called:

Reduction

Oxidation

Evaporation

Condensation

Question 21 of 36

Question 22 of 36

22. The oxidation number of nitrogen in HNO₃ is

–3

Question 22 of 36

Question 23 of 36

23. Oxidation number of elements in Group 1 is

– 1

+ 2

+ 1

– 2

Question 23 of 36

Question 24 of 36

24. The oxidation number of sulphur in H₂SO₄ is:

+10

Question 24 of 36

Question 25 of 36

25. The oxidation number chromium in K₂C₂O₇ is:

+14

Question 25 of 36

Question 26 of 36

26. Is non-electrolytes:

C₆H₆

H₂SO₄

HCl

NaOH

Question 26 of 36

Question 27 of 36

27. The oxidation number of chlorine in KClO₃ is:

Question 27 of 36

Question 28 of 36

28. The process of coating a thin layer of zinc on iron is called:

Alloying

Reducing

Galvanizing

Oxidizing

Question 28 of 36

Question 29 of 36

29. The most common example of corrosion is:

Rusting of tin

Rusting of Aluminum

Chemical Decay

Rusting of Iron

Question 29 of 36

Question 30 of 36

30. Types of electrochemical cells are:

Question 30 of 36

Question 31 of 36

31. Oxidation number of element in independent State:

Zero

–2

–1

Question 31 of 36

Question 32 of 36

32. Oxidation number of chlorine in KClO₃ is:

Question 32 of 36

Question 33 of 36

33. Which of the following electrolyte produce less ions in water?

NaCl

Ca(OH)₂

H₂SO₄

NaOH

Question 33 of 36

Question 34 of 36

34. Formation of water from hydrogen and oxygen is:

Chemical Decay

Neutralization

Decomposition

Redox Reaction

Question 34 of 36

Question 35 of 36

35. The oxidation number of oxygen in peroxides:

– 2

– 1

– 3

Question 35 of 36

Question 36 of 36

36. The oxidation number of oxygen in peroxides:

– 1

– 2

Zero

Question 36 of 36

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