MCQ
Polymer used in bullet proof glass is:
- ALexan
- ✓$\text{PMMA}$
- CNomex
- DKevlar
✓
Answer
Correct option: B.
$\text{PMMA}$
Lexan is a kind of polycarbonate i.e. thermosetting polymers containing carbonate groups.
They are strong, tough materials, and are optically transparent.
This is why a laminated polycarbonate $($Lexan$)$ is used to make bulletproof glass.
They are strong, tough materials, and are optically transparent.
This is why a laminated polycarbonate $($Lexan$)$ is used to make bulletproof glass.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The disproportionation of $MnO _{4}^{2-}$ in acidic medium resulted in the formation of two manganese compounds $A$ and $B$. If the oxidation state of $Mn$ in $B$ is smaller than that of $A$, then the spin-only magnetic moment $(\mu)$ value of $B$ in $BM$ is $.........$ (Nearest integer)
→In which of the following reaction $1^o$ alkyl halide is a major product ?
→Out of the following the one that undergoes reaction with $50\%\ \text{NaOH}$ solution to give corresponding alcohol and acid is:
→How many $S-S$ bond, $S-O-S$ bond, $\sigma$ bonds and $\pi$ bonds are present in trimer of $SO_3.$
→The end product of the following reaction is:
During estimation of nickel, we prepare nickel dimethylglyoxime, a scarlet red solid. This compound is ______.
$1\,mol$ each of the following compounds is dissolved in $1\,L$ of solution. Which will have the largest $\Delta T_b$ value ?
→When $2-$ ethylanthraquinol dissolved in a mixture of benzene and cyclohexanol is oxidised, the product is
→One mole of calcium phosphide on reaction with excess water gives
The correct order of spin only magnetic moments for the following complex ions is