Question

Match the following lists:

• A. A-4 B-3 C-2 D-1
• B. A-3 B-4 C-2 D-5
• C. A-2 B-5 C-3 D-4
• D. A-5 B-2 C-3 D-4

Answer 1

Answer: (A)

A-4 B-3 C-2 D-1

Answer 2

Wurtz reaction: Alkyl halide when heated with metallic sodium and zinc powder in ether gives alkane by joining two alkyl groups. $2RX+2Na\xrightarrow{\text{ether}}R.R+2NaX$ Williamson synthesis: It is the laboratory preparation of ether. $\underset{\text{Sod}\text{.alkoxide}}{\mathop{RONa}}\,+\underset{\text{Alkyl}}{\mathop{XR}}\,\xrightarrow{\Delta }\underset{\text{Ether}}{\mathop{ROR}}\,+NaX$ Hell-Volhard-Zelinsky reaction: $\alpha -$ chloro or $\alpha -$ bromo acids are usually prepared by first converting the acid into its chloride and bromide and then carrying out chlorination or bromination. Thus is called HV Z reaction. So, is for $\alpha -$ halogenation. $\underset{\text{Add}}{\mathop{RC{{H}_{2}}COOH}}\,\xrightarrow{\text{P + B}{{\text{r}}_{\text{2}}}}\underset{\text{Acid}\,\text{bromide}}{\mathop{RC{{H}_{2}}CO.Br}}\,$
Aldol condensation: When aldehydes and ketones having $\alpha -$ hydogen atoms are treated with alkali they undergo self-addition between two molecules to form a $\beta -$ hydroxy aldehyde or ketone (known as aldol). This addition is usually followed by elimination of a water molecule resulting in overall condensation reaction. $C{{H}_{3}}CHO+C{{H}_{3}}CHO\xrightarrow{O{{H}^{-}}}\underset{\begin{smallmatrix} \beta -\text{hydroxy}\,\text{butyraldehyde} \\\ \text{(Aldol)} \end{smallmatrix}}{\mathop{C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}CHO}}\,$ Molasses: Ethyl alcohol is obtained from molasses. It is obtained as a byproduct of sugarindustry.