Engineering - Mechanical Engineering

You Are Here :: Home > Mechanical Engineering > Engineering Materials -General Questions

 
25.

A reversible change in the atomic structure of steel with corresponding change in the properties is known as                        
A. molecular change B. physical change
C. allotropic change D. solidus change



26.

The molecules in a solid move                        
A. in a random manner B. in a haphazard way
C. in circular motion D. back and forth like tiny pendulums



27.

The crystal structure of gamma iron is                        
A. body centred cubic B. face centred cubic
C. hexagonal close packed D. cubic structure




28.

The crystal of alpha iron is                        
A. body centred cubic B. face centred cubic
C. hexagonal close packed D. cubic structure



29.

The metallic structure of mild steel is                        
A. body centred cubic B. face centred cubic
C. hexagonal close packed D. cubic structure



30.

For the allotropic forms of iron, the points of arrest are                        
A. the points where no further change occurs B. constant for all metals
C. the points where there is no further flow of metal D. the points of discontinuity



« prev

1

2

3

4

5

6

7

8

9

next »
 
 



© 2013 freshersindia.in ® | Copyrights | Terms & Conditions   Designed by Freshers India
Catch Us on