pulse Click on Answer tab for Answers.

Atoms and Electrons – 1 – 10

46. Mobility of electron is highest in :

(a) Silicon
(b) Germanium
(c) Gallium arsenide
(d) Carbon

ANSWER

EXPLANATION

47. The nature of atomic bond found in diamond is :

(a) Tetravalent
(b) Covalent
(c) Metallic
(d) Ionic

ANSWER

EXPLANATION

48. Facing fraction of simple cube is :

(a) 6.48
(b) 0.52
(c) 0.65
(d) 0.89

ANSWER

EXPLANATION

49. According to Coulomb’s first law :

(a) Like charges attract each other
(b) Like charges repel each other
(c) There is no force between the charges
(d) None of these

ANSWER

EXPLANATION

50. When an electron moves from lower orbit to a higher orbit :

(a) Emission of energy takes place
(b) Absorption of energy takes place
(c) Size of atom increases
(d) Either absorption or emission of energy takes place

ANSWER

EXPLANATION

1 2 3 4 5 6 7 8 9 10 Exercise 2

Be a Part of The New & Next

MCQs fb  MCQs G+

Share the Knowledge

Leave a Reply

Your email address will not be published. Required fields are marked *

Shares
Copy Protected by Chetan's WP-Copyprotect.