Recent questions tagged classification-of-materials

Consider $3$ crystals (all having FCC lattice) labelled as $\text{P, Q}$ and $\text{R}$ as described below:Crystal $\text{P}$: Cu crystal with $4$ $\text{Cu}$ atoms per u...

Which of the following is/are the most appropriate compatibilizer(s) for the ploypropylene/Nylon $66$ blend?Maleic anhydride grafted polystyreneMaleic anhydride grafted p...

​​​​The figure below shows a plane $\text{PQR}$ in a unit cell. The Miller indices of the plane $\text{PQR}$ is$(432)$$(43 \overline{2})$$(23 \overline{4})$$(\overline{2}...

​For $\mathrm{Al}-4.5 \mathrm{wt} \% \mathrm{Cu}$ alloy, the correct sequence of precipitation during age hardening at room temperature isGP zone $\rightarrow \theta^{\pr...

​​​​​There is $\textsf{NO}$ base-centered cubic lattice among the list of $14$ Bravais lattices because of one or more of the following reasonsIt does $\textsf{NOT}$ have...

In an $\textsf{FCC}$ crystal with lattice parameter $a$, consider the reaction of two leading partial dislocations, $\text{AB}$ and $\text{CD}$, at the line of intersecti...

The $\textsf{TTT}$ diagram for eutectoid steel is shown below. The steel after complete austenitization at $1073 \: \mathrm{K}$ is rapidly cooled to different temperature...

For a pure element with a $\textsf{BCC}$ crystal structure, the surface energies per unit area of $\{100\}$ and $\{110\}$ free surfaces are $S_{100}$ and $S_{110}$, respe...

Mechanical behaviour of a crystalline ceramic material is best described asductilebrittleviscoelasticViscoplastic

Which one of the following unit cell parameters represents a tetragonal crystal system?$\mathrm{a}=\mathrm{b}=\mathrm{c} ; \quad \alpha=\beta=\gamma \neq 90^{\circ}$$\mat...

Which of the following is/are typical characteristic(s) of a fungal cell?Presence of histone proteinsPresence of peptidoglycans in the cell wallPresence of chitin in the ...

\begin{tabular}{|l|l|}Q.44 & \begin{tabular}{l}In age-hardening of an aluminium alloy, the purpose of solution treatment \\followed by quenching is to\end{tabular} \\\hli...

\begin{tabular}{|l|l|}\hline Q.48 & \begin{tabular}{l}Aliovalent doping of $M g C l_{2}$ in $\mathrm{NaCl}$ leads to the formation of defects. Which one \\of the followin...

\begin{tabular}{|c|c|c|}\hline Q. 56 & \multicolumn{2}{|c|}{\begin{tabular}{l}TTT diagram of a eutectoid steel is shown below. Match the heat treatment cycle (ir \\Column...

\begin{tabular}{|l|l|}\hline Q. 58 & \begin{tabular}{l}Among the 14 Bravais lattices, there is no base centred cubic unit cell. Which of \\the following statement(s) is/a...

\begin{tabular}{|c|c|c|}\hline \multirow[t]{2}{*}{ Q. 117} & \multicolumn{2}{|c|}{ What is the correct order of decreasing crystallinity of the given polymers? } \\\hline...

\begin{tabular}{|l|l|}\hline Q.44 & Number of atoms per unit area of the (110) plane of a body centered cubic crystal, \\with lattice parameter ' $a$ ', is \\\hline& $\fr...

Q.45 Match the following materials with their corresponding bonding types.$\mathrm{P}-4 ; \mathrm{Q}-2 ; \mathrm{R}-3 ; \mathrm{S}-1$$\mathrm{P}-3 ; \mathrm{Q}-4 ; \mathr...

A two-phase $(\alpha+\beta)$ mixture of an $\text{A-B}$ binary system has the following properties:Phase $\alpha$ has equal weight percentages of $\mathrm{A}$ and $\mathr...