Chemistry 2nd Paper CQ-Jessore Board-2022

What is paraffin?

Why salt bridge is used in cells? Explain.

Write the balanced equation of the reaction which occurred by the mixture of solution 1 and 2 .

$10 \mathrm{~mL}$ of solution number 3 is needed to completely oxidise solution number 2 . Verify purity of iron mathematically.

What is the full form of SATP?

Electrochemical equivalence of $\mathrm{Ag}$ is $0.001118 \mathrm{gC}^{-1}$-Explain.

Prepare B from A with chemical equation.

Between $A$ and $C$ which one is acidic? Analyze.

What is 'Absolute zero temperature'?

Propane and butane are homologue of each other-Explain.

What will be the product if $\mathbf{B}$ is strongly oxidised? Show with relevant equations.

Which one will be the major product when HX is added to the compound A? Analyze with the reference of relevant rule.

What is secondary standard substance?

$\mathrm{AlCl}_{3}$ is a Lewis acid-Explain.

Calculate kinetic energy of 1 mole $B$ gas.

Which one's diffusion rate of the gases between A and $B$ will be greater? Analyze mathematically.

What is functional group?

$\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ is an oxidising agent- Explain.

Calculate the number of molecules of gas $\mathrm{A}$.

Does the gas mixture of A and B support Dalton's partial pressure law? Analyze mathematically.