Chemistry 2nd Paper CQ-Dhaka Board-2021

Define partial pressure.

$\mathrm{HCO}_{3}{ }^{-}$is an amphoteric substance - Explain.

Find out the kinetic energy of $\mathrm{B}$ gas at $27^{\circ} \mathrm{C}$ temperature. 3

Under which conditions B gas will behave like A gas? Explain.

What is ppm?

What do you understand by electro chemical equivalent of silver is $0.001118 \mathrm{~g}$ ?

Which gaseous law support the fig-1, of the stem, prove it.

State the law supported by graph-2 and explain whether the law is applicable in cylinderizing of gas or not.

State Faraday's 1 st law?

In between molarity and molality which one depends on temperature?

What type of stereo isomerism does the B-compound of the stem exhibit? Explain.

Illustrate the difference between compound $\mathrm{P}$ and $\mathrm{Q}$ of the stem with proper reaction.

Define chiral carbon.

Why is alcohol soluble in water?

Describe the difference between A and B compound with reaction.

Analyze the reaction mechanism for the preparation of $B$ in given stem.

Define standard electrode potential.

Write down the equation of real gas $64 \mathrm{~g} \mathrm{O}_{2}$.

Determine the cell potential of the cell made by connecting (i) and (iii) electrode through a salt bridge.

$\mathrm{FeSO}_{4}$ solution is safe to keep in one but not in another in the container made by $\mathrm{Zn}$ and $\mathrm{Cu}$. - Explain the statement mathematically.