Biomolecules — Chemistry STD 12 Science — Question

An organic compound (A) (molecular formula C₈H₁₆O₂) was hydrolysed with dilute sulphuric acid to give a carboxylic acid (B) and an alcohol (C). Oxidation of (C) with chromic acid produced (B). (C) on dehydration gives but-1-ene. Write equations for the reactions involved.

The resistance of a conductivity cell containing 0.001 M KCI solution at 298 K is 1500 Ω. What is the cell constant if the conductivity of 0.001 M KCI solution at 298 K is 0.146 × 10^–3 S cm^–1?

Phenols do not undergo substitution of the -OH group like alcohols.

Explain the classification of amine compounds.

For any solvent, the molal gradient constants value is certain. Why?

Arrange the following in decreasing order of their acidic strength and give reason for your answer.
CH₃CH₂OH, CH₃COOH, ClCH₂COOH, FCH₂COOH, C₆H₅CH₂COOH

Define native state in reference to protein.

Give an example of a material used for making semipermeable membrane for carrying out reverse osmosis.

Calculate the half-life of a first order reaction from their rate constants given below:

1. 200 s^–1
2. 2 min^–1
3. 4 years^–1

Give structures of the products you would expect when each of the following alcohol reacts with

SOCl₂

(i) Butan-1-ol

(ii) 2-Methylbutan-2-ol