Atomic Structure test 9

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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. Splitting of spectral lines when atoms are subjected to strong electric field is called

A) Zeeman effect
B) Stark effect
C) Photoelectric effect
D) Compton effect

2. The velocity of photon is

A) independent of its wavelength
B) depends on its wavelength
C) equal to square of its amplitude
D) depends on its source

3. The nature of positive rays depend on

A) the nature of electrode
B) the nature of discharge tube
C) the nature of residual gas
D) all of the above

4. The wave number of the light emitted by a certain source is 2 x 10^6 m. The wavelength of this light is

A) 500 nm
B) 500 m
C) 200 nm
D) 5x 10^-1

5. Rutherford’s model of atom failed because

A) the atom did not have a nucleus and electrons
B) it did not account for the attraction between protons and neutrons
C) it did account for the stability of the atom
D) there is actually no space between the nucleus and the electrons

6. A) Planck’s quantum theory
B) Pauli exclusion principle
C) Heisenberg uncertainty principle
D) All of the above

7. Quantum number value for 2p orbitals are

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

8. In the ground state of an atom, the electron is present

A) in the nucleus
B) in the second shell
C) nearest to the nucleus
D) farthest from the nucleus

9. When the 6d orbital is complete the entering electron goes into

A) 7f
B) 7s
C) 7p
D) 7d

10. Orbitals having same energy are called

A) hybrid orbitals
B) valence orbitals
C) degenerate orbitals
D) d–orbitals