When glucose reacts with acetone in acidic medium, the main product is

• laevulic acid

• glycosazone

• dioxopropylidene glucose

• None of the above

Identify the final product B of the reaction

C₆H₅COOH + NaH$\stackrel{*}{\mathrm{C}}$O₃ → gas (A) $\underset{{\mathrm{H}}_2{\mathrm{O}}^{+}}{\overset{{\mathrm{CH}}_3\mathrm{MgBr}}{\to }}$ (B)

Here, $\stackrel{*}{\mathrm{C}}$ = C¹⁴

• $\stackrel{*}{\mathrm{C}}$H₃COOH

• C₆H₅$\stackrel{*}{\mathrm{C}}$OOH

• CH₃$\stackrel{*}{\mathrm{C}}$OOH

• H$\stackrel{*}{\mathrm{C}}$OOCH₃

The reactant X in the reaction

X $\underset{({\mathrm{CH}}_3\mathrm{CO}{)}_2\mathrm{O}}{\overset{{\mathrm{CH}}_3\mathrm{COONa}}{\to }}$ Cinnamic acid is

The compound B is

The pair of molecules forming strongest hydrogen bonds are

• HCOOH and CH₃COOH

• CH₃COOH and CHCl₃

• H₂O and H₂

• SiF₆ and SiH₄

Which of the following reasonating structures is not correct for

Which of the following represents the correct order of the acidity in the given compound?

• ClCH₂COOH < BrCH₂COOH< CH₃COOH < FCH₂COOH

• CH₃COOH < BrCH₂COOH < ClCH₂COOH < FCH₂COOH

• FCH₂COOH < ClCH₂COOH < BrCH₂COOH < CH₃COOH

• CH₃COOH < ClCH₂COOH < BrCH₂COOH < CH₃COOH

Three of the following four reactions are due to one similar feature of carbonyl compounds, while the fourth one is different.Which one is fourth?

• Haloform reaction

• Aldol condensation

• Knoevenagel reaction

• witting reaction

CH₃CHO + HCHO $\underset{\mathrm{Heat}}{\overset{\mathrm{Dil}. \mathrm{NaOH}}{\to }} \mathrm{A} \underset{{\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{\mathrm{HCN}}{\to }} \mathrm{B}$

The structure of the compound B is

• CH₂=CH-CH(OH)-COOH

• CH₂=CH-CH(CN)-OH

• CH₃-CH₂-CN(CN)OH

• CH₃-$\underset{\mathrm{Cl}}{\overset{\mathrm{CN}}{\underset{\left|}{\overset{\right|}{\mathrm{CH}}}}}$-COOH

The IUPAC name of the following compound is

HOCH₂-CH₂-CO-CH(CH₃)₂

• 2-methyl-5-hydroxy-3-pentane

• 4-methyl-3-oxo-1-pentanol

• 1-hydroxy-4-methyl-3-pentanone

• 3-keto-hexan-1-ol