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Introduction to Material Science – 1 – 3

11. Aluminium is :

(a) Silvery white in colour
(b) Yellow in colour
(c) Reddish in colour
(d) Pale yellow in colour

ANSWER

EXPLANATION

12. The main constituents of glass is :

(a) SiO2
(b) B2O3
(c) Al2O3
(d) Cr2O3

ANSWER

EXPLANATION

13. Micanite is a form of :

(a) Built up mica
(b) Hydrated potassium aluminium silicate
(c) Magnesium mica
(d) Calcium mica

ANSWER

EXPLANATION

14. Which of the following material has the highest melting point :

(a) Copper
(b) Aluminium
(c) Tungsten
(d) Gold

ANSWER

EXPLANATION

15. Insulators have :

(a) A full valence band
(b) An empty conduction band
(c) A large energy gap
(d) All the above

ANSWER

EXPLANATION

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