Punjab 9th Class Chemistry Model Paper 4 Mcqs Test Online

Chemistry Model Paper 4 Mcqs Test Online 9th Class Punjab

Question 1 of 36

Chemistry

1. Ice floats on water because:

Water molecules move randomly

Ice is crystalline nature

Water is denser than ice

Ice is denser than water

Question 1 of 36

Question 2 of 36

2. Freezing poing of alchohal is:

115°C

+116°C

+115°C

-116°C

Question 2 of 36

Question 3 of 36

3. The compound which is non-directional in bonding is:

KBr

CO₂

H₂O

CH₄

Question 3 of 36

Question 4 of 36

4. Melting point of sodium is?

95°C

97°C

96°C

98°C

Question 4 of 36

Question 5 of 36

5. The weakest force among the atoms is:

Intermolecular Force

Metallic Force

Ionic Force

Covalent Force

Question 5 of 36

Question 6 of 36

6. C₆H₆ molecule has covalent bond:

Question 6 of 36

Question 7 of 36

7. Floating of Ice on water is an example of:

Carbon Bonding

Ionic Bonding

Hydrogen Bonding

Oxygen Bonding

Question 7 of 36

Question 8 of 36

8. How many covalent bonds does C₂H₄ molecule have:

Question 8 of 36

Question 9 of 36

9. Are often malelial and dectael?

Metals

Metaloids

Both A and B

Non Metals

Question 9 of 36

Question 10 of 36

10. Metallic shine is found in:

Metalloids

Both A and B

Non Metals

Metals

Question 10 of 36

Question 11 of 36

11. Molecule of N₂ is Comprises of how many bonds:

Question 11 of 36

Question 12 of 36

12. The types of chemical bonds are:

Question 12 of 36

Question 13 of 36

13. ___________ pair has polar covalent Bonds:

H₂O and HCl

H₂O and N₂

O₂ and Cl₂

H₂O and C₂H₂

Question 13 of 36

Question 14 of 36

14. Example of single covalent bond is:

N₂

CH₄

C₂H₄

O₂

Question 14 of 36

Question 15 of 36

15. Atoms combinely form:

Bond

Mixture

Compound

Molecule

Question 15 of 36

Question 16 of 36

16. Easily made cation:

Metals

Slids

Metaloids

Non Metals

Question 16 of 36

Question 17 of 36

17. Boiling point of Nacl is:

1413°C

1313°C

1513°C

1613°C

Question 17 of 36

Question 18 of 36

18. A dative bond is formed between ammonia and boron triflouride, the acceptor atom is:

Hydrogen

Fluorine

Boron

Nitrogen

Question 18 of 36

Question 19 of 36

19. Electronegativity of fluorine on palling scale is:

4.1

3.8

3.4

Question 19 of 36

Question 20 of 36

20. The example of Ionic compound is:

H₂

O₂

NaCl

CHl

Question 20 of 36

Question 21 of 36

21. The density of Ice at 0°C is:

0.917gcm⁻³

1.00gcm⁻³

1.5gdm⁻³

1.4gdm⁻³

Question 21 of 36

Question 22 of 36

22. Boiling point of water is:

100°C

101°C

102°C

99°C

Question 22 of 36

Question 23 of 36

23. The melting point of sodium chloride is:

800°C

700°C

600°C

500°C

Question 23 of 36

Question 24 of 36

24. A covalent bond formed between two similar atoms is called:

Dative Covalent Bond

Polar covalent Bond

Non polar covalent Bond

Metallic Bond

Question 24 of 36

Question 25 of 36

25. Chlrine has ____________ electrons in its outer shell:

Question 25 of 36

Question 26 of 36

26. Which couple has single covalent bond:

kCH₄ and CH₃Cl

CH₄ and C₂H₄

CH₄ and C₂H₁

CH₄ and CO₂

Question 26 of 36

Question 27 of 36

27. Bond formation between two non-metals will be possible:

Metallic

Covalent

Coordinate Covalent

Ionic

Question 27 of 36

Question 28 of 36

28. Nitrogen molecule has triple bond?

Question 28 of 36

Question 29 of 36

29. Which one of the following is an electron deficient molecule?

N₂

BF₃

NH₃

O₂

Question 29 of 36

Question 30 of 36

30. Which type of bond is found in Nacl?

Ionic

Cordinate

Metallic

Covalent

Question 30 of 36

Question 31 of 36

31. The atom providing one pair of electrons in dative covalent bond is called:

Electronegative

Ionic Bond

Accepter

Donar

Question 31 of 36

Question 32 of 36

32. Is an example of weak forces:

Chemical forces

Covalent forces

Inter molecular forces

Ionic forces

Question 32 of 36

Question 33 of 36

33. From the following which one is directional according to compound bonding?

NaCl

Mgcl₂

CH₄

KBr

Question 33 of 36

Question 34 of 36

34. The compound not soluble in water is:

NaCl

KBr

MgCl₂

C₆H₆

Question 34 of 36

Question 35 of 36

35. How many electrons take part in triple covalent bond?

Question 35 of 36

Question 36 of 36

36. Which one of these is a polar molecule?

H₂

Cl₂

CHl

O₂

Question 36 of 36

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