Chemistry : Aldehydes, Ketones and Carboxylic Acids

In the reaction $\underset{\left(\mathrm{vapour}\right)}{{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}} \underset{300°\mathrm{C}}{\overset{\mathrm{Cu}}{\to }} \mathrm{X}$. The molecular formula of X is

• C₄H₆O

• C₄H₁₀O

• C₂H₄O

• C₂H₆

Which of the products is formed when acetone is reacted with barium hydroxide solution ?

• CH₃ - $\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}$ - CH₂ - $\underset{\mathrm{OH}}{\overset{{\mathrm{CH}}_3}{\underset{\left|}{\overset{\right|}{\mathrm{C}}}}}$ - CH₃

• CH₃ - $\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}} - \underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}} - \underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}}$ - CH₃

• CH₃ - $\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}} - \underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}} - \underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}$ - CH₃

• CH₃ - $\underset{{\mathrm{CH}}_3}{\overset{\mathrm{OH}}{\underset{\left|}{\overset{\right|}{\mathrm{C}}}}} - \underset{{\mathrm{CH}}_3}{\overset{\mathrm{OH}}{\underset{\left|}{\overset{\right|}{\mathrm{C}}}}}$ - CH₃

When acetaldehyde is heated with Fehling solution, a red precipitate is formed. Which of the following is that ?

• Cu₂O

• Cu

• CuO

• CuSO₄

When compound X is oxidised by acidified potassium dichromate, compound Y is formed. Compound Y on reduction with LiAlH₄ gives X. X and Y respectively are :

• C₂H₅OH, CH₃COOH

• CH₃COCH₃, CH₃COOH

• C₂H₅OH, CH₃COCH₃

• CH₃CHO, CH₃COCH₃

The functional groups present in 'salol' are

• -NH₂ and -OR

• OH and -COR

• -NH₂ and -COOH

• -OH and -COOR

$$\begin{gathered} {\mathrm{CH}}_3\mathrm{COOH} \stackrel{{\mathrm{LiAlH}}_4}{\to } \mathrm{A} \\ \mathrm{A} + {\mathrm{CH}}_3\mathrm{COOH} \stackrel{{\mathrm{H}}_3{\mathrm{O}}^{+}}{\to } \mathrm{B} + {\mathrm{H}}_2\mathrm{O} \end{gathered}$$

In the above reactions 'A' and 'B' respectively are

• CH₃COOC₂H₅, C₂H₅OH

• CH₃CHO, C₂H₅OH

• C₂H₅OH, CH₃CHO

• C₂H₅OH, CH₃COOC₂H₅

An organic compound 'X on treatment with pyridinium chloro chromate in dichloromethane gives compound 'Y'. Compound Y', reacts with I₂ and alkali to form triiodomethane. The compound 'X' is

• C₂H₅OH

• CH₃CHO

• CH₃COCH₃

• CH₃COOH

Aqueous solution of an organic compound, 'A' on electrolysis liberates acetylene and CO₂ at anode. 'A' is

• potassium acetate

• potassium succinate

• potassium citrate

• potassium maleate

What are $\underline{\mathrm{X}}$ and $\underline{\mathrm{Y}}$ in  the following reaction sequence?

C₂H₅OH $\stackrel{{\mathrm{Cl}}_2}{\to } \underline{\mathrm{X}} \stackrel{{\mathrm{Cl}}_2}{\to } \underline{\mathrm{Y}}$

• C₂H₅Cl, CH₃CHO

• CH₃CHO, CH₃CO₂H

• CH₃CHO, CClCHO

• C₂H₅Cl, CCl₃CHO

What are $\underline{\mathrm{A}}, \underline{\mathrm{B}} \mathrm{and} \underline{\mathrm{C}}$ in the following reactions?

(I) (CH₃CO₂)₂Ca $\stackrel{∆}{\to } \underline{\mathrm{A}}$

(II) CH₃CO₂H $\underset{\mathrm{Red} \mathrm{P}}{\overset{\mathrm{HI}}{\to }} \underline{\mathrm{B}}$

(III) 2CH₃CO₂H $\stackrel{{\mathrm{P}}_4{\mathrm{O}}_{10}}{\to } \underline{\mathrm{C}}$

• $\underline{\mathrm{A}}$ - C₂H₆ ; $\underline{\mathrm{B}}$ - CH₃COCH₃ ; $\underline{\mathrm{C}}$ - (CH₃CO)₂O

• $\underline{\mathrm{A}}$ - (CH₃CO)₂O ; $\underline{\mathrm{B}}$ - C₂H₆ ; $\underline{\mathrm{}}$$\underline{\mathrm{C}}$ - CH₃COCH₃

• $\underline{\mathrm{A}}$ - CH₃COCH₃ ; $\underline{\mathrm{B}}$ - C₂H₆ ; $\underline{\mathrm{C}}$ - (CH₃CO)₂O

• $\underline{\mathrm{A}}$ - CH₃COCH₃ ; $\underline{\mathrm{B}}$ - (CH₃CO)₂O ; $\underline{\mathrm{C}}$ - C₂H₆