Download App

Carbonyl Compounds and Carboxylic Acids — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryCarbonyl Compounds and Carboxylic Acids3 Marks
Question
Give three test for carboxylic acid.
✓

Answer

  1. In aqueous solution, carboxylic acid turn blue litmus red.
  2. Carboxylic acids give brisk effervescence with. sodium bicarbonate due to the evolution of carbon – di – oxide.
  3. When carboxylic acid is warmed with alcohol and conc $H _2 SO _4$ it forms an ester, which is detected by its fruity odour.

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 "[ 3 Marks Questions ]" from Carbonyl Compounds and Carboxylic Acids→Carbonyl Compounds and Carboxylic Acids — all question types→Chemistry STD 12 question papers→Tamilnadu Board STD 12 question papers→Tamilnadu Board question paper generator→

Similar questions

What happens when D – glucose is treated with the following reagents?
  1. HI
  2. Bromine water
  3. $HNO _2$
→
Explain the action of following reagent with ethane nitrile.
  1. Dilute mineral acid
  2. Ni / $H_2$
→
How will you prepare Xenon fluoride?
→
Cr and Cu are more stable. Give reason.
→
How would you calculate the solubility of sparingly soluble salt using Kohlrausch’s law?
→
How many lattice points are there in one unit cell of each of the following lattice?
  1. Face – centred cubic
  2. Face – centred tetragonal
  3. Body – centered
→
The activation energy of a reaction is $22.5 k Cal mol ^{-1}$ and the value of rate constant at $40^{\circ} C$ is $1.8 \times 10^{-5} s^{-1}$. Calculate the frequency factor, A .
→
Explain the following observations: Lyophilic colloid is more stable than lyophobic colloid.
→
What are the biological functions of nucleic acids?
→
Compare the reduction potentials of $Mn ^{3+} / Mn ^{2+}$ and $Fe ^{3+} / Fe ^{2+}$.
→