What is a conjugated protein called if it contains a carbohydrate as a prosthetic group?

Which of the following species can act as a reducing agent?

$A$ polygon has $54$ diagonals. Then,the number of its sides is

The diameter of the objective of a telescope is $1 \ m$. Its resolving limit for light of wavelength $4538 \ \mathring A$ will be:

One mole of $A_{(g)}$ is heated to $200^{\circ} C$ in a one litre closed flask,till the following equilibrium is reached.
$A_{(g)} \rightleftharpoons B_{(g)}$
The rate of forward reaction at equilibrium is $0.02 \ mol \ L^{-1} \ min^{-1}$. What is the rate (in $mol \ L^{-1} \ min^{-1}$) of the backward reaction at equilibrium?

The angular magnification of a simple microscope can be increased by increasing