The correct IUPAC nomenclature for the following compound is:

The descending order of acidity for the following carboxylic acid is-

A. $$\mathrm{CH}_{3} \mathrm{COOH}$$

B. $$\mathrm{F}_{3} \mathrm{C}-\mathrm{COOH}$$

C. $$\mathrm{ClCH}_{2}-\mathrm{COOH}$$

D. $$\mathrm{FCH}_{2}-\mathrm{COOH}$$

E. $$\mathrm{BrCH}_{2}-\mathrm{COOH}$$

Choose the correct answer from the options given below:

From the figure of column chromatography given below, identify incorrect statements.

A. Compound 'c' is more polar than 'a' and 'b'

B. Compound '$$\mathrm{a}$$' is least polar

C. Compound 'b' comes out of the column before 'c' and after 'a'

D. Compound 'a' spends more time in the column

Choose the correct answer from the options given below:

Resonance in carbonate ion $$\left(\mathrm{CO}_{3}{ }^{2-}\right)$$ is

Which of the following is true?