Which of the following functional groups is present in a ketone compound?

In electron dot structure,the valence shell electrons are represented by crosses or dots.
$(a)$ The atomic number of chlorine is $17$. Write its electronic configuration.
$(b)$ Draw the electron dot structure of chlorine molecule $(Cl_2)$.

Write the chemical equations for the reactions of ethanoic acid with the following:
$(a)$ Sodium
$(b)$ Sodium hydroxide
$(c)$ Ethanol
Also,write the name of one main product for each reaction.

$CH_{3}COOH + C_{2}H_{5}OH \xrightarrow[\Delta]{\text{conc. } H_{2}SO_{4}} (?)$

Which of the following tests is used for the detection of glucose?

Which condensation polymer is formed from hexamethylenediamine and adipic acid?