Atomic Structure Test 7

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 charge on an electron is

A) 1.602 x 10^–19 c
B) 1.602 x 10^–18 c
C) 1.602 x 10^–19 c
D) 1.602 x 10^–21 c

2. The charge on the proton is

A) + 1.602 x 10^–19 c
B) zero
C) – 1.602 x 10^19 c
D) 1.602 x 10^–19 c

3. The charge on the neutron is

A) 1.602 x 10^–19 c
B) zero
C) – 1.602 x 10^–19 c
D) + 1.602 x 10^–19 c

4. The calculated e/m value of electron is

A) 1.602 x 10^19 c kg–1
B) 1.7588 x 10^–11 c kg–1
C) 1.7588 x 10^–13 c kg–1
D) 1.759 x 10^9 c kg

5. The mass of proton is

A) 9.11 x 10^–31 kg
B) 1.676 x 10^–27 kg
C) 1.60 x 10^–19 kg
D) 1.675 x 10^–27 kg

6. The mass of neutron is

A) 1.675 x 10^–27 kg
B) 1.675 x 10^–25 kg
C) 9.11 x 10^–31 kg
D) 1.60 x 10^–19 kg

7. The charge on electron was determined by

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

8. Alpha particles are identical to

A) hydrogen atoms
B) helium atoms
C) helium nuclei
D) fast moving electrons

9. Bombardment of Beryllium with alpha particles generates

A) proton
B) neutron
C) electron
D) positron

10. The colour of the glow produced in the discharge tube depends upon

A) gas
B) electrodes
C) composition of gas
D) pressure