XI Chemistry Atomic Structure Online Test Mdcat-2024

1. The unit in which wave number is measured

2. According to Bohr’s Theory which one of the following values of angular momentum is not permitted :

3. Transition of electron from M-Shell to K-Shell results in emission of :

4. The energy of a photon is given by the relation

5. The energy of an electron in Bohr’s atom _______ as we move away from the nucleus

6. What is a,b, and c in the figure respectively

7. In the picture given above, select the option in which electronic configuration is incorrectly represented.

8. The radius of first orbit of hydrogen is

9. ________ states that In an orbital of an atom, no two electrons can have the same set of four quantum numbers at least one quantum number must be different

10. Maximum number of electrons in sub energy level is given by formula

11. The possible number of orbitals in level with n=3 is

12. The quantum number which gives an idea about the distance of the electron from the nucleus and the energy of the electron is called:

13. Which have better penetrating power

14. Spin Quantum no may be

15. The orbitals having n+l=5 are

16. According to Planck’s quantum theory
I)Energy travel in a discontinuous manner
II)Energy occurs in the form of wave packets
III) The energy of a photon is inversely proportional to its wavelength
IV)Energy emitted or absorbed is quantized

17. In the configuration of nitrogen which rule is violated 7N=1s², 2s²,2p_x²​2p_y¹

i) Hund’s rule

ii) Aufbau’s Principle

iii) n+l rule

iv) Pauli Rule

18. The shape of orbital when l=2

19. Which of the following would, on gaining an electron have a half filled set of p orbitals

20. if the number of values of m is seven, the azimuthal quantum no should be

21. Two electrons in helium differ in the value quantum no denoted by

22. Which of the following produce positive rays of minimum charge to mass ratio

23. All possible values of l and m for n=2

24. Mosely during his studies on wavelength of x-rays noted that wavelength of x-rays is inversely proportional to :

25. Orbitals having same energy are called...

26. Which of the following is used to measure the age of fossils and artifacts

27. 2p,3p,4p differ from each other by

28. Which of the following is rule is concerned with filling of degenerate orbitals

29. When 4d orbital is filled, the next electron enter into

30. Rutherford’s model of an atom failed because:

31. Shape of orbital is described by:

32. In continuos spectrum which color suffers maximum deflection:

33. When the electron jumps from the 1st orbit to the 2nd orbit radius increases:

34. Energy of 1st orbit of Hydrogen is equal to:

35. A type of spectrum in which all wavelength of electromagnetic radiation are present without any gap or interruptions is:

36. Which of the following is not the postulate of Bohr Atomic Model

37. When electron is in second orbit its Angular momentum can be stated as:

38. When electron returns back to lower orbit from higher orbit it;

39. ”As long as electron remains in an appropriate orbit, it neither loses, nor gains energy” is the statement of:

40. Select the correct statement for neutrons

41. Which of the following statement is correct
I)Balmer studied spectrum of hydrogen atom in visible light
II)Lyman studied spectrum of Hydrogen atom in U.V light
III)Paschen series of hydrogen atom belongs to UV light
IV)Bracket series of hydrogen spectrum belongs to Infrared light

42. Balmer Series in hydrogen emission spectrum is formed when:

43. Electronic Configuration affects the:

44. Charge of an electron was calculated by which experiment

45. EXCEPT ____ NUCLEI OF ALL OTHER ATOM CONTAIN NEUTRONS

46. NEUTRON WAS DISCOVERED BY :

47. RUTHERFORD STATE THAT NUCLEUS IS :

48. THE LIMITING LINE IN BRACKET SERIES IS:

49. QUANTUM NUMBER OF 2s ARE:

50. PAULI’S PRINCIPLE IS APPLICABLE TO: