Electron was discovered by?

Related Mcqs:

1. When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is______________?

   A. 0.33 nm
   B. 0.34 nm
   C. 0.35 nm
   D. 0.36 nm

2. What is the name of newsly discovered galaxy which may be the earliest and most distant galaxy ever discovered in April 2022?

   A. HD1
   B. GN-z11
   C. Milky way
   D. None of these

   Submitted by: adeel2550

3. The absolute value of charge on electron was determined by ________ ?

   A. J.J.Thomson
   B. Chadwick
   C. Rutherford
   D. Robert Millikan

   Submitted by: Rashid Mehmood

4. When electron jump into orbit 1 then series obtained is___________________?

   A. Lyman
   B. Paschen
   C. Pfund
   D. Brackett

5. Charge of electron was measured by__________________?

   A. J.J Thomson
   B. Millikan
   C. Rutherford
   D. Perrin

6. Wavelength of electron was verified by_________________?

   A. Moseley
   B. Davisson and Germer
   C. Einstein
   D. Roentgen

7. Quantum number which tells the energy of electron is________________?

   A. n
   B. 1
   C. m
   D. s

8. Unpaired electron in a molecule gives ______________ character ?

   A. Ferromagnetic
   B. Paramagnetic
   C. Diamagnetism
   D. Both A & B

9. Higher value of electron affinity means__________________?

   A. Atom will lose electron easily
   B. Atom will gain electron easily
   C. Atom may form di-positive ion
   D. The reason is unknown

10. An element having low value of ionization energy and low value of electron affinity is likely to belong to__________________?

    A. Group IA
    B. Group IB
    C. Group VIIA
    D. Group VIII