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Engineering Materials

Engineering Materials
Lead is poured into the joint between two pipes. These pipes may be made of

Vitrified clay
Cast iron
Concrete
Asbestos cement

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Engineering Materials
Following elements have face-centered cubic structure

A iron (below 910°C and between 1400 to 1539°C), W
Mg, Zn, Ti, Zr, Br, Cd
All of these
Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt

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Engineering Materials
Which is false statement about case hardening? Case hardening is done by

Nitriding
Induction hardening
Electroplating
Cyaniding

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Engineering Materials
Steel containing ferrite and pearlite is

Hard
Hard and tough
Tough
Soft

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Engineering Materials
There are fourteen atoms in a unit cell of

Body centered cubic space lattice
Face centered cubic space lattice
Close packed hexagonal space lattice
None of these

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Engineering Materials
Pearlite consists of

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

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