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QUIZ START
#1. The maximum number of electrons in a sub-shell with l = 3 is:
#2. Radius of the third shell of H-atom is:
#3. Colour of fluorescence produced by cathode rays depends upon:
#4. A fast moving neutron can eject from nitrogen:
#5. Pressure in gas discharge tube was kept:
#6. Angle of deflection of cathode rays in electric field was studied by:
#7. Positive rays give flash on:
#8. Free neutron change into proton with the emission of:
#9. The value of e/m ratio of electron is —————— C-kg⁻¹:
#10. Charge of electron was measured by:
#11. Angular momentum of an electron:
#12. Plank’s equation is:
#13. Millikan used —————— in his atomizer:
#14. When electron de-excite back into orbit 1, then series obtained is:
#15. The wave number of the light emitted by a certain source is 2 × 10⁶ m⁻¹. The wavelength of this light will be:
#16. Quantum number values for 2p orbitals are:
#17. When 6d orbital is complete, entering electron goes into:
#18. The e/m value for the positive rays is maximum for:
#19. The radius of first orbit of hydrogen atom is:
#20. Total number of d-electrons in an atom of atomic number 26 is:
#21. Which of the following orbital is not possible:
#22. Spin quantum number was given by:
#23. X-rays have same nature as:
#24. The value of Rhdberg constant is:
#25. Balmer series lie in:
#26. Which one of the following orbital will be first filled:
#27. An orbital can accommodate max. of:
#28. The orbital which is spherically symmetrical is:
#29. The SI unit of wave number is:
#30. X-rays were discovered by:
#31. Which of the following particles contain 20n, 19p and 18e:
#32. The electrons in K-shell of the atom will differ in:
#33. The no. of electrons in the M. shell of the element with atomic number 24 is:
#34. The value of Plank’s constant ‘h’ is:
#35. If “r” is the radius of first orbit, the radius of “nth” orbit of H-atom will be:
