(Paper) Atomic Structure Quiz Exercise -1 (Part-1)

Paper : Atomic Structure Quiz Exercise -1 (Part-1)

Discovery and Properties of Anode, Cathode Rays, Neutron and Nuclear Structure

Q.1 The size of nucleus is of the order of

[1] 10–12
[2] 10–8
[3] 10–15
[4] 10–10 m

Q.2 The ratio of charge and mass would be greater for

[1] Proton 
[2] Electron 
[3] Neutron 
[4] Alpha

Q.3 The radius of an atom is of the order of

[1] 10–10 cm 
[2] 10–13 cm 
[3] 10–15 cm 
[4] 10–8 cm

Q.4 Which one of the following pairs is not correctly matched

[1] Rutherford-Proton 
[2] J.J.Thomson-Electron 
[3] J.H.Chadwick-Neutron 
[4] Bohr-Isotope

Q.5 Proton was discovered by

[1] Chadwick 
[2] Thomson 
[3] Goldstein 
[4] Bohr

Q.6 The average distance of an electron in an atom from its nucleus is of the order of

[1] 106
[2] 10–6
[3] 10–10
[4] 10–15 m

Q.7 The ratio of specific charge of a proton and an α-particle is

[1] 2 : 1 
[2] 1 : 2 
[3] 1 : 4 
[4] 1 : 1

Atomic Number, Mass Number, Atomic Species

Q.8 Which of the following are isoelectronic with one another

[1] Na+ and Ne 
[2] K+ and O 
[3] Ne and O 
[4] Na+ and K+

Q.9 The number of electrons in one molecule of CO2 are

[1] 22 
[2] 44 
[3] 66 
[4] 88

Q.10 An atom has 26 electrons and its atomic weight is 56. The number of neutrons in the nucleus of the atom will be

[1] 26 
[2] 30 
[3] 36 
[4] 56

Q.11 An atom has the electronic configuration of 1s2, 2s2 2p6,3s2 3p6 3d10, 4s2 4p5. Its atomic weight is 80. Its atomic number and the number of neutrons in its nucleus shall be

[1] 35 and 45 
[2] 45 and 35 
[3] 40 and 40 
[4] 30 and 50

Q.12 Which of the following particles has more electrons than neutrons

[1] C 
[2] F  
[3] O–2  
[4] Al+3

Q.13 Na+ ion is isoelectronic with

[1] Li+  
[2] Mg+2  
[3] Ca+2  
[4] Ba+2

Q.14 Which of the following oxides of nitrogen is isoelectronic with CO2

[1] NO2
[2] N2
[3] NO 
[4] N2O2

Q.15 The hydride ions (H) are isoelectronic with

[1] Li 
[2] He+  
[3] He 
[4] Be

Q.16 Which of the following are isoelectronic species I = CH3+, II = NH2, III = NH4+, IV = NH3

[1] I, II, III 
[2] II, III, IV 
[3] I, II, IV 
[4] I and II

Q.17 Number of unpaired electrons in inert gas is

[1] 0 
[2] 8 
[3] 4 
[4] 18

Q.18 Which one of the following is not isoelectronic with O2–

[1] N3–  
[2] F  
[3] Tl+  
[4] Na+

Q.19 If molecular mass and atomic mass of sulphur are 256 and 32 respectively, its atomicity is

[1] 2 
[2] 8 
[3] 4 
[4] 16

Q.20 The number of neutron in tritium is

[1] 1 
[2] 2 
[3] 3 
[4] 0

Q.21 The atomic mass of an element is 12.00719 amu. If there are 6 neutrons in the nucleus of the atom of the element, the binding energy per nucleon of the nucleus will be

[1] 7.64 MeV 
[2] 76.4 MeV 
[3] 764 MeV 
[4] 0.764 MeV

(e = 0.00055 amu, p = 1.00814 amu, n = 1.00893 amu)

Answer Key

Ques.

1

2

3

4

5

Ans.

3

2

4

4

3

Ques.

6

7

8

9

10

Ans.

3

1

1

1

2

Ques.

11

12

13

14

15

Ans

1

3

2

2

3

Ques.

16

17

18

19

20

Ans.

2

1

3

2

2

Ques.

21

Ans.

1

Page : 1      2     3      4     Next 

For full Atomic Structure Quiz Exercise-1 Click Here!