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Introduction to Material Science – 1 – 2

6. A glass is a/an :

(a) good conductor
(b) semiconductor
(c) insulator
(d) resistive material

ANSWER

EXPLANATION

7. Ceramics are good :

(a) insulators
(b) conductors
(c) superconductors
(d) semiconductors

ANSWER

EXPLANATION

8. The heating elements of electric irons are made of :

(a) Copper
(b) Nichrome
(c) Constantan
(d) 
Aluminium

ANSWER

EXPLANATION

9. The most malleable, ductile low resistivity material is :

(a) Copper
(b) Aluminium
(c) Silver
(d) 
Iron

ANSWER

EXPLANATION

10. The percentage of carbon in mild steel is :

(a) 0.08 to 0.3 %
(b) 0.5 to 1.4 %
(c) 2.35 %
(d) 
0.5 %

ANSWER

EXPLANATION

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