List of top Material Science & Ceramic Technology Questions asked in Tamil Nadu Common Entrance Test

Which one of the following statements about phase diagrams is NOT correct?
A cation vacancy and an anion vacancy in a crystal is called
Choose the wrong statement
In a binary system of A and B, if a liquid of 30% A is co-existing with a solid of 75% A, for an overall composition of 40% A, the fraction of liquid is given by
Fatigue failure occurs due to
The correct order of co-ordination number in BCC, FCC and HCP unit cells is
If resistivity is \( 1.7 \times 10^{-6} \) \( \Omega \)cm, area of cross-section is \( 19.6 \times 10^{-8} \) m\(^2\), length is 31.4 m, the resistance is found to be
The nearest neighbor distance in case of BCC structure is
Martensitic transformations
If \( K \) and \( \sigma \) be the thermal and electrical conductivities of a metal at temperature \( T \), then
The degree of freedom when ice, water, and water vapour co-exist in equilibrium is
Which of the following substances is not used as coolant in nuclear reactors?
Which of the following structures has the highest density of packing?
Which one of the following sets of constituents is expected in equilibrium cooling of a hyper-eutectoid steel from the austenitic state?
Corrosion resistance of steel is increased by adding
Specify the sequence correctly
The lattice constant of a BCC unit cell with an atomic radius of 1.24 Å is
In N-Type semiconductor, the Fermi Level
The unit of diffusional flux is
Which of the following heat treatment processes is used for softening hardened steel?
Choose the correct statement
The crystal structure of the following materials is FCC except
In comparison to lattice diffusion, the activation energy for diffusion along surfaces and grain boundaries is
_________ is used to calculate theoretical weight deposited on the electrode during electrolysis.
How many number of atoms are present in the unit cell of HCP structure?