Chemistry : Aldehydes, Ketones and Carboxylic Acids

Which of the following organic compounds answers to both iodoform test and Fehling's test ?

• Ethanol

• Methanal

• Ethanal

• Propanone

In Clemmensen reduction, compound is treated with

• zinc amalgam + HCI

• sodium amalgam+ HCI

• zinc amalgam + HNO₄

• sodium amalgam + HNO₃

The following conversion is known as

CH₃-CH=O + H-CH₂CHO $\stackrel{\mathrm{Dilute} \mathrm{NaOH}}{\to }$ CH₃-CHOH-CH₂CHO

• Cannizzaro reaction

• aldol condensation

• polymerisation

• benzoin condensation

The yellow colour in NaCl crystals is due to

• excitation of electrons in F-centres

• reflection of light from Cl ions on the surface

• refraction of light from Na⁺ ions

• all of the above

Assertion: Formic acid reduces mercuric chloride to mercurous chloride on heating, while acetic acid does not.

Reason: Formic acid is a stronger acid than acetic acid.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

The IUPAC name of the following compound is 

• propionic anhydride

• dipropanoic anhydride

• ethoxy propanoic acid

• propanoic anhydride

Acetaldehyde cannot show :

• iodoform test

• Lucas test

• Benedict's test

• Tollen's test

Which of the following will be most readily dehydrated under acidic conditions ?

Which of the following cannot reduce Fehling solution ?

• HCOOH

• H₃CCOOH

• HCHO

• H₃CCHO

Assertion : (CH₃)₃CCOOH does not give HVZ reaction.

Reason: (CH₃)₃CCOOH does not have $\text{α}$-hydrogen atom.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.