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Engineering Materials

Engineering Materials
An eutectoid steel consists of

Wholly pearlite
Wholly austenite
Pearlite and ferrite
Pearlite and cementite

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Engineering Materials
Nodular cast iron is produced by adding ________ to the molten cast iron.

Copper
Chromium
Magnesium
Nickel

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Engineering Materials
Cementite consist of

6.67% carbon and 93.33% iron
13% ferrite and 87% cementite
13% cementite and 87% ferrite
13% carbon and 87% ferrite

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Engineering Materials
The heat treatment process used for softening hardened steel is

Tempering
Carburising
Annealing
Normalizing

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Engineering Materials
Which of the following has a fine gold colour and is used for imitation jewellery?

Gun metal
Aluminium bronze
Babbitt metal
Silicon bronze

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Engineering Materials
Maximum percentage of carbon in austenite is

0.017
0.008
0.0026
0.00025

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