Download App

Aldehydes, Ketones, and Carboxylic Acids — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryAldehydes, Ketones, and Carboxylic Acids1 Mark
MCQ
Ethanol on reaction of acidified potassium dichromate form:
  • A
    Ethane
  • B
    Ethene
  • C
    Ethanal
  • D
    Ethanoic acid
✓

Answer

  1. Ethanoic acid

Explanation:

C2​H5​OH + K2​Cr2​O7​/H+ → CH3​CHO → CH3​COOH

Ethanol is first oxidised to ethanal and then to ethanoic acid.

Potassium dichromate is a very strong oxidising agent, ethanol on oxidation, the dichromate ion (IV) solution which is orange in colour is reduced to a green colour Cr(III) ion solution. This reaction is used in detecting the presence of alcohol in breath in suspected drunken drivers.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q [1M]" from Aldehydes, Ketones, and Carboxylic Acids→Aldehydes, Ketones, and Carboxylic Acids — all question types→Chemistry STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

Which of the following is a 3° amine?
→
Write the IUPAC name of the given compound:

$\text{HO}−\text{CH}_2​−\text{​CH}−\text{CH}_2​−\text{OH}​\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ∣ \\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3​​$

→
Which of following is the incorrect match?
→
The compound having tetrahedral geometry is:
→
Which of the following methods is suitable for preventing an iron frying pan from rusting?
→
The positive value of the standard electrode potential of Cu2+/Cu indicates that ____________.
→
Which of the following is a disaccharide?
→
Which concentration terms is not changed with change in temperature ?
→
Arrange these haloalkanes in correct order of density:
→
Aluminothermic process is used in the metallurgy of :
→