Chemistry 2nd Paper CQ-Chittagong Board-2023

What is an amide?

How carbonyl group can be converted into methylene group? Explain.

In compound ' $\mathrm{A}$ ' there are three $\pi$-bondsExplain with suitable reactions.

In the case of clectrophilic substitution reaction, between compounds ' $\mathrm{A}$ ' and ' $\mathrm{B}$ ' which one is more reactive? Analyze.

What is an absolute zero temperature?

Why COD value of sample water is higher than that of BOD value? Explain.

Calculate the total pressure of gas mixture in vessel-3.

Diffusion rate of which gas in this stem will be higher? Give mathematical logic.

What is called molarity?

Why does $\mathrm{FeO}$ act both as an oxidising and reducing agent? Explain.

Explain with equation, the identification reaction of the functional group of compound 'A'.

Will the mechanism of the two reactions of the stem be same? Analyze.

What is TDS of sample water?

Why the pressure of a real gas is lower than that of an ideal gas? Explain.

Calculate the number of molecules of gas 'A' in the stem.

Which gas of the stem is responsible for acid rain? Analyze mathematically.

What is called hardness of water?

Naphthalene is an aromatic compound-Explain.

Calculate the time required to deposit half of the metal ion of vessel-1 on the cathode by passing $2 \mathrm{~A}$ of electricity?

Will the cell reaction of the stem take place spontaneously? Give mathematical logic.