What is the full form of $MTP$?

If in a regular polygon,the number of diagonals is $54$,then the number of sides of the polygon is:

The solubility product of silver bromide $(AgBr)$ is $5.0 \times 10^{-13}$. Calculate the mass of potassium bromide $(KBr)$ (molar mass = $120 \, g \, mol^{-1}$) that must be added to $1 \, L$ of a $0.05 \, M$ silver nitrate $(AgNO_3)$ solution to initiate the precipitation of $AgBr$.

The geometry of $ClO_3^-$,according to valence shell electron pair repulsion $(VSEPR)$ theory will be

If $\frac{1+\sqrt{3}i}{2}$ is a root of the equation $x^4-x^2+x-1=0$,then its real roots are: 

The reagent used in the preparation of aspirin from salicylic acid is