Biomolecules — Chemistry STD 12 Science — Question

Answer the following question:
Why a person suffering from high blood pressure is advised to take minimum quantity of common salt?

Give plausible explanation for each of the following:

Cyclohexanone forms cyanohydrin in good yield but 2, 2, 6-trimethylcyclohexanone does not.

Explain reactivity order of S_N1 and S_N2 reaction for alkyl halide, allylic halide and benzylic halide.

Describe the following :
Acetylation

How will you bring about the following conversion?
Ethane to bromoethene.

Explain classification of haloalkane and haloarene on the basis of number of halogen atoms.

Explain why :
alkyl halides, though polar, are immiscible with water?

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true and the reason is not the correct explanation of assertion.
3. Assertion is true but the reason is false.
4. Both assertion and reason are false.
5. Assertion is false but reason is true.

Assertion: E_Ag+/Ag increases with increase in concentration of Ag⁺ ions.
Reason: E_Ag+/Ag has a positive value.

Explain why p-nitrophenol is more acidic than phenol.

Explain the observed K_b order:
Et₂NH > Et₃N > EtNH₂ in aqueous solution.