Coaching

Question 1

In terms of which of the following properties, metals are better than ceramics in?

Answer 1

Ductility

Question 2

Ceramics make excellent refractory materials. A material is said to be refractory if it

Answer 2

Retains its strength at high temperatures

Question 3

Which of the ff cannot be used as bio-materials?
A. Metals
B. Ceramics
C. Polymers
D. None of these

Answer 3

D.

Question 4

Which of the ff is true for polymers?
A. They have very high molecular mass
B. They do not have a linear stress-strain curve
C. They have high strength-to-mass ratio
D. All of the above

Answer 4

D.

Question 5

All are attributes of ceramics except:
A. Covalent bonded
B. Low melting point
C. High stiffness
D. High hardness

Answer 5

B. Low melting point

Question 6

All are NOT attributes of metals except:
A. Electrical insulators
B. Thermal insulators
C. High melting points
D. Ductile

Answer 6

D. Ductile

Question 7

It is an element or metallic allow which, when cooled below a certain threshold temperature, the material dramatically loses all electrical resistance

Answer 7

Superconductors