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Worksheets

Base Metals

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Melting Temperature - most of the base metal alloys have at

a)

below 950 c

b)

1150-1500 c

c)

900- 1000 c

d)

above 1500 c

2.

The Average Density Of Cast Base Metal Alloys Is Between

a)

3-5gms /Cm3

b)

9-11gms /Cm3

c)

7-8gms /Cm3

d)

2-4gms /Cm3

3.

Gives an indication of when a permanent deformation of a part such as clasp will occur.

a)

Yield Strength

b)

Tensile Strength

c)

Compressive Strength

d)

All the above

4.

Indication Of Relative Brittleness And Ductility.

a)

Distortion

b)

Compression

c)

Elongation

d)

Propulsion

5.

NICKEL-CHROMIUM-BERYLLIUM ALLOY Composition: Nickel – 62% to 82% Chromium – 11% to 20% Beryllium –

a)

1.0%

b)

2.0%

c)

3.0%

d)

4.0%

6.

Inhalation of beryllium containing dust or fumes is the main route of exposure. It causes a condition know as

a)

berylliosis

b)

berylliophobia

c)

berylliocyst

d)

berylliopenia

7.

It is chromium which makes the stainless steel resistant to

a)

porosity

b)

Creep

c)

tarnish and corrosion

d)

attrition

8.

a Steel at a Temperature Above 912 C Is Suddenly Cooled , It Undergoes Transformation in Its Structure to Form a Body Centered Tetragonal Structure Called

a)

Austenitic

b)

Martensite

c)

both

d)

none

9.

Cobalt and nickel containing alloys could be potential allergens ,biological risks of metal ions being released suggests use of

a)

Chromium

b)

Molybdenum

c)

titanium

d)

bronze

10.

the ability of the alloy to retain and memorize a particular shape given to it

a)

Control Memory effect

b)

Shape Memory effect

c)

No Memory effect

d)

Ferrule effect