Atomic Structure Test 8

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A test from chapter 5 i.e Atomic Structure of Chemistry part 1. This is Free online test for FSc and Entry test Preparation for UET, NUST, FAST, GIKI, PIEAS, NFC, Punjab University, UHS, other Engineering Universities and Medical Colleges.

1. The e/m value for the positive rays is maximum for

A) hydrogen
B) helium
C) nitrogen
D) oxygen

2. Neutron was discovered by Chadwick in

A) 1935
B) 1930
C) 1932
D) 1934

3. Quantum number values for 3p orbitals are

A) n = 0, l = 3
B) n = 3, l = 1
C) n = 2, l = 1
D) n = 1, l = 3

4. The velocity of photon is

A) equal to square of its amplitude
B) independent of its wavelength
C) equal to its wave number
D) equal to velocity of light

5. The radius of first orbit of hydrogen atom

A) 0.329 A
B) 9.429 A
C) 0.529 A
D) 0.229 A

6. All atoms are principally composed of few fundamental particles which are in number

A) 2
B) 3
C) 4
D) 5

7. Which scientist gave the name of electron to the cathode rays

A) Planck
B) Einstein
C) Stoney
D) Bohr

8. The divisibility of atom was showed by

A) Stoney
B) J.J. Thomson
C) Millikan
D) Rutherford

9. The nature of cathode rays remains the same irrespective of the material used for

A) gas
B) cathode
C) glass
D) electrode

10. Mass of electron is

A) 9.1 x 10^–31 kg
B) 9.109 x 10^–32 gm
C) 8.1 x 10^–31 g
D) 9.1 x 10^–31 mg