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 

Atomic number equals


Following is wrong about a phase diagram.


Not a basic step of precipitation strengthening


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


Very electronegative atoms (Cl) are most likely to


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:


Not a Hume-Ruthery condition:


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


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


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


Overall transformation rate changes with temperature as follows:


Gibbs phase rule for general system:


The size of a unit cell is described by:


Grain boundaries are:


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


Figure out the odd statement about ceramics in the following


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


Interstitials are:


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


A metallic bond forms by


Impurity not responsible for temper embrittlement


First metal known to be used by man


In general, strongest polymer group is __________


Kevlar is commercial name for ___________


Strong and ductile materials