Online exam on Material science

Please select the correct answer from the bellow multiple choice. Every question contain 2 marks. It has no negative marking, correct answer bring you two have to answer 25 question to complete the exam. After select the correct answer press “Show Answer” button it will show the correct result and then press the “Next” button to get next question. End of exam you will see your overall result with grade card. so check your preparation


online exam 

First metal known to be used by man


Following is wrong about a phase diagram.


Grain boundaries are:


Strong and ductile materials


The degree of freedom at triple point in unary diagram for water ________.


In general, strongest polymer group is __________


Interstitials are:


Gibbs phase rule for general system:


The size of a unit cell is described by:


100 g of solder contains 52 wt% tin (Sn) and 48 wt% lead (Pb). The atomic weight of Sn is 118.7 g/mol, and the atomic weight of Pb is 207.2 g/mol.

No. of mole of Sn in the solder is:


The number of atoms in a unit cell of bcc, fcc and hcp metals are


An invariant reaction that produces a solid up on cooling two liquids:


The word ‘polymer’ meant for material made from ______________.


The boundary line between (liquid) and (liquid+solid) regions must be part of _________.


A metallic bond forms by


Not a basic step of precipitation strengthening


Atomic number equals


In a bcc structure, the lattice constant, a, and the atom radius, R, have the following relationship:


Kevlar is commercial name for ___________


Not a Hume-Ruthery condition:


Very electronegative atoms (Cl) are most likely to


Mg has an atomic number Z = 12. The electronic configuration for a magnesium ion with a plus two (+2) charge is:


Figure out the odd statement about ceramics in the following


Impurity not responsible for temper embrittlement


Overall transformation rate changes with temperature as follows: