Punjab 9th Class Chemistry Model Paper 2 Mcqs Test Online

Chemistry Model Paper 2 Mcqs Test Online Punjab 9th Class

Question 1 of 36

Chemistry

1. Who discovered neutron?

Rutherford

Gold Stein

Chadwick

Bohar

Question 1 of 36

Question 2 of 36

2. Which one of the following element is the lightest and floats on water.

Calcium

Sodium

Lithium

Magnesium

Question 2 of 36

Question 3 of 36

3. The concept of orbit was used by:

Planks

J.J. Thamson

Bohr

Ruther ford

Question 3 of 36

Question 4 of 36

4. Who discovered proton?

Ruther ford

J.J. Thomas

Bohar

Gold Stein

Question 4 of 36

Question 5 of 36

5. Which one is a radioactive isotope?

¹³C

¹⁴C

¹¹C

¹²C

Question 5 of 36

Question 6 of 36

6. Number of isotopes of carbon are:

Question 6 of 36

Question 7 of 36

7. Which one is a non polar-molecule?

HCl

H₂

HNO₃

H₂O

Question 7 of 36

Question 8 of 36

8. Which one of the following shell consists of three sub-shell:

Shell-M

Shell-L

Shell-N

Shell-O

Question 8 of 36

Question 9 of 36

9. The amount of energy given out when an electron is added to an atom is called:

Ionization

Lattice Energy

Electron Affinity

Electromagnetically

Question 9 of 36

Question 10 of 36

10. When U-235 breaks up, it produces:

Electrons

Neutrons

None of these

Protons

Question 10 of 36

Question 11 of 36

11. Which are of these results in proton discovery?

X-rays

Cathode Rays

Alpha-Rays

Canal Rays

Question 11 of 36

Question 12 of 36

12. Which radio isotope is used to diagnose goiter?

Iodine-131

Sternotium-90

Cobalt-60

Phosphorus-30

Question 12 of 36

Question 13 of 36

13. The Scientist who discovered proton was:

Gold Stein

Neil Bohr

Ruther Ford

J.J. Thamson

Question 13 of 36

Question 14 of 36

14. Isotopes of chlorine are:

³⁴Cl, ³⁵Cl

³⁵Cl, ³⁷Cl

³⁴Cl, ³⁶Cl

³⁰Cl, ³²Cl

Question 14 of 36

Question 15 of 36

15. The third abundant gas found in the earth’s crust is:

Argon

Nitrogen

Oxygen

Aluminum

Question 15 of 36

Question 16 of 36

16. There are five electrons in the M-Shall of an element. Its atomic no will be:

Question 16 of 36

Question 17 of 36

17. “N” shell can accommodate electrons:

Question 17 of 36

Question 18 of 36

18. Maximum number of electrons accommodate in L-shell are:

Question 18 of 36

Question 19 of 36

19. _________ shell consists of three subshells:

Shell O

Shell L

Shell N

Shell M

Question 19 of 36

Question 20 of 36

20. How many electrons can K-shell accommodate?

Question 20 of 36

Question 21 of 36

21. How much electrons can be accommodated in M-Shell:

Question 21 of 36

Question 22 of 36

22. The maximum number of electrons in L shell?

Question 22 of 36

Question 23 of 36

23. The distance between Nuclei of two carbon atomms is:

140 Pm

154 Pm

115 Pm

110 Pm

Question 23 of 36

Question 24 of 36

24. Number electrons accommodate in “P” sub shell?

Question 24 of 36

Question 25 of 36

25. The total number of sharin electrons in N₂ gas is:

Question 25 of 36

Question 26 of 36

26. The M-Shell can accommodate mazxium:

Question 26 of 36

Question 27 of 36

27. Number of electrons accommodate in valence shell of halogens are:

Question 27 of 36

Question 28 of 36

28. “P” sub shell is consists of:

Orbital 1

Orbitals 2

Orbitals 4

Orbitals 3

Question 28 of 36

Question 29 of 36

29. The mass of electron is:

1.672x10⁻²⁴kg

1.672 x10⁻²⁴g

9.106 x10⁻²⁸g

9.106 x10⁻²⁸kg

Question 29 of 36

Question 30 of 36

30. The Scientist who presented the concept of orbit around the:

Ruther Ford

J.J. Thomson

Bohar

Planks

Question 30 of 36

Question 31 of 36

31. The particle which penetrates into matter more than others is:

Alpha particle

Proton

Neutron

Electron

Question 31 of 36

Question 32 of 36

32. Electrons in N-Shell are:

Question 32 of 36

Question 33 of 36

33. Nucleus of an atom consists of:

Electrons and Protons

Protons and Neutrons

Electrons

Electron and Neutrons

Question 33 of 36

Question 34 of 36

34. Which radioisotope is used for the diagnosis of goiter in thyroid gland?

Iodine 131

Stronitium 90

Phosphorus 30

Cobalt 60

Question 34 of 36

Question 35 of 36

35. Second Period consists of elements?

Question 35 of 36

Question 36 of 36

36. No. of isotopes of uranium are:

Question 36 of 36

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