STD 9 CHEMISTRY CHAPTER -1 Atomic Structure (EM)

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Total Score-20
Time- 20 minutes
Prepared by USHAKUMARY S , GOVT HSS KARUNAGAPPALLY

Name of the student *

Class & Division *

Required

1. Who proposed Atomic Theory? *

1 point

J J Thomson

Ernest Rutherford

John Dalton

2. Who isolated Sodium for the first time by using electricity? *

1 point

Michael Faraday

Sir Humphry Davy

Eugen Goldstein

3. Who discovered the presence of negatively charged particle in atom? *

1 point

J J Thomson

Rutherford

Faraday

4. What is the mass of a proton? *

1 point

5. Who discovered Neutron? *

1 point

Rutherford

Faraday

James Chadwick

6. Who put forward the Planetary Model of Atom? *

1 point

William Crookes

J J Thomson

Rutherford

7. Who discovered presence of positively charged particles in the atom? *

1 point

J J Thomson

Rutherford

Chadwick

8. Which particles are seen in the nucleus? *

1 point

Electron & proton

Proton & neutron

Electron & neutron

9. What is the charge of Nucleus? *

1 point

Positive

Negative

No charge

10. What is Atomic Number? *

1 point

No of neutrons

No of protons

No of protons & neutrons

11. Atomic number of an element is 13, mass number is 27. Find out the no of protons, neutrons, electrons? *

1 point

p - 14 , n - 13 , e - 13

p - 13, n - 14 , e - 13

p - 13 , n - 13 , e - 13

12. Which isotope is used as a fuel in atomic reactors? *

1 point

Phosphorous - 31

Carbon - 14

Uranium - 235

13. What is the mass numbers of these atoms A & B *

1 point

A - 8 , B - 10

A - 18 , B - 10

A - 16 , B - 18

14.In an atom, protons - 11 , neutrons - 12 , electrons - 11. Find out its Atomic number, mass number, electronic configuration? *

1 point

Atomic no - 11, Mass no - 23 , electronic configuration - 2,8,1

Atomic no - 12, Mass no - 23 , electronic configuration - 2,8,2

Atomic no - 12, Mass no - 22 , electronic configuration - 2,8,2

15. Find out the atomic number , electronic configuration of the atom given below? *

1 point

Atomic no - 14 , Electronic configuration - 2,8,3

Atomic no - 13 , Electronic configuration - 2,8,3

Atomic no - 13 , Electronic configuration - 2,8,4

16. Who proposed Law of Electrolysis? *

1 point

William Crookes

Humphry Davy

Michael Faraday

17. Among the following, which is the isotopic pair? ₈A ¹⁷, ₆c¹⁴, ₈A¹⁶ , ₇N¹⁴ *

1 point

₈A ¹⁷, ₆c¹⁴

₆c¹⁴ , ₇N¹⁴

₈A ¹⁷ , ₈A¹⁶

18. The mass number of an atom is 35. The M shell of this atom contain 7 electrons. What is its Atomic number , Number of neutrons? *

1 point

Atomic number - 17 , Number of neutrons - 18

Atomic number - 18 , Number of neutrons - 18

Atomic number - 17 , Number of neutrons - 17

19. Name the experiment conducted by Rutherford to discover protons? *

1 point

Discharge tube experiment

Gold Foil experiment

Electrolysis

20. Maximum number of electrons that can accomodate in 'N' shell of the atom? *

1 point

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