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Question 1 of 36

Chemistry

1. Which one of the following is a molecular mass of O₂ in amu:

32 amu

53.12 x 10⁻²⁴g

1.672 x 10⁻²⁴

19264x10²⁵

Question 1 of 36

Question 2 of 36

2. The mas of electron is:

9.106x10⁻²⁸

1.674x10⁻²⁴g

1.672x10⁻²⁴g

1.66x10⁻²⁴g

Question 2 of 36

Question 3 of 36

3. Which element is found in most abundance in atmosphere:

Nitrogen

Oxygen

Argon

Chlorine

Question 3 of 36

Question 4 of 36

4. Example of diatomic molecule is:

CO₂

Hcl

H₂O

O₃

Question 4 of 36

Question 5 of 36

5. Mass of one molecule of water is:

36 amu

20 amu

18 amu

16 amu

Question 5 of 36

Question 6 of 36

6. Deuterium is found in?

Light water

Heavy water

Hard water

Soft water

Question 6 of 36

Question 7 of 36

7. The number of moles in 29.25g of Nacl is:

0.25

0.21

0.50

0.75

Question 7 of 36

Question 8 of 36

8. The chemical formula of washing soda is:

Na₂CO₃

Na₂CO₃6H₂O

Na₂CO₄H₂

Na₂CO₃10H₂O

Question 8 of 36

Question 9 of 36

9. How many number of moles are equivalent to 11 grams of CO₂:

0.15

0.2

0.25

0.3

Question 9 of 36

Question 10 of 36

10. Radius of carbon is:

87Pm

77Pm

54Pm

164Pm

Question 10 of 36

Question 11 of 36

11. Molar mass of H₂SO₄ is:

98g

98amu

9.8g

9.8amu

Question 11 of 36

Question 12 of 36

12. ___________ number of moles are equivalent to 8 grams of CO₂:

0.15

0.18

0.21

0.24

Question 12 of 36

Question 13 of 36

13. Which one of the following is separated by physical means?

Mixture

Elements

Compounds

Radicals

Question 13 of 36

Question 14 of 36

14. The mass of one molecule of water is:

18 amu

18 g

18 mg

18 kg

Question 14 of 36

Question 15 of 36

15. Mass of neutron is:

1.00073 amu

1.008 amu

1.0087 amu

1.0097 amu

Question 15 of 36

Question 16 of 36

16. Gram atomic mass of hydrogen is:

1.008 g

2.016 g

1.008 amu

2.016 amu

Question 16 of 36

Question 17 of 36

17. All of the following are tri-atomic except:

H₂

O₃

H₂O

CO₂

Question 17 of 36

Question 18 of 36

18. Percentage by weight of hydrogen in ocean is:

Question 18 of 36

Question 19 of 36

19. The valency of chromium is:

Question 19 of 36

Question 20 of 36

20. Human body has carbon up to ____________%

Question 20 of 36

Question 21 of 36

21. Chemical formula for calcium oxide is::

CaO₂

CaO

Ca(OH)₂

CaCO₃

Question 21 of 36

Question 22 of 36

22. Valency of Fe in FeSO₄ is:

Question 22 of 36

Question 23 of 36

23. The mass of electron is:

1.66 x 10⁻²⁴g

1.672 x 10⁻²⁴g

1.674 x 10⁻²⁴g

9.106 x 10⁻²⁸g

Question 23 of 36

Question 24 of 36

24. Molecular mass of O₂ in a.mu.u is:

32 amu

53.12 x 10⁻²⁴amu

1.92 x 10⁻²⁵amu

192.64 x 10⁻²⁵amu

Question 24 of 36

Question 25 of 36

25. The number of naturally occurring elements is:

108

114

Question 25 of 36

Question 26 of 36

26. The empirical formula of glucose is:

CH₂O

CHO

C₂HO

C₂H₂O

Question 26 of 36

Question 27 of 36

27. The velancy of iron in Fe₂(SO₄)₃ :

Question 27 of 36

Question 28 of 36

28. The number of moles in 8g of CO₂ are:

0.15

0.18

0.21

0.24

Question 28 of 36

Question 29 of 36

29. Atomic number of oxygen is:

Question 29 of 36

Question 30 of 36

30. 1mL is equal to:

1cm³

2cm³

3cm³

4cm³

Question 30 of 36

Question 31 of 36

31. Valency of noble gases is usually?

Zero

Question 31 of 36

Question 32 of 36

32. Valency of group 2 is

Question 32 of 36

Question 33 of 36

33. Molecular mass of water is:

Question 33 of 36

Question 34 of 36

34. Percentage by weight of nitrogen in atmosphere is:

78%

76%

77%

79%

Question 34 of 36

Question 35 of 36

35. Formula mass of potassium sulphate is:

174 amu

174g

174g 1mol

174 mol

Question 35 of 36

Question 36 of 36

36. One atmosphere (atm) is equal to:

1 torr

760 torr

101326 torr

1mm of Hg

Question 36 of 36

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Test By Topics	9th Class Chemistry

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Punjab 9th Class Chemistry Model Paper 1 Mcqs Test Online

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Punjab 9th Class Chemistry Model Paper 1 Mcqs Test Online