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प्रश्न
State any two uses of esters.
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उत्तर
Uses of esters:
(1) Esters are used in making artificial perfumes because of their sweet fragrance.
(2) Esters are used as flavouring agents in ice-creams, sweets and cold drinks.
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संबंधित प्रश्न
A student takes about 6 ml of distilled water in each of the four test tubes P, Q, R and S. He then dissolves an equal amount of four different salts namely, sodium chloride in 'P', potassium chloride in 'Q', calcium chloride in 'R' and magnesium chloride in 'S'. Next, he then adds 10 drops of soap solution to each test tube and shakes its contents. The test tubes in which scum (insoluble substance) is formed with soap are:
(A) P and Q
(B) Q and R
(C) R and S
(D) Q and S
How esters are prepared ?
Complete the following chemical equations :CH3COOH+NaOH→
You have four test tubes, A, B, C and D containing sodium carbonate, sodium chloride, lime water and blue litmus solutions respectively. Out of these the material of which test tube/ test tubes would be suitable for the correct test of acetic/ethanoic acid?
(a) only A
(b) A and B
(c) B and C
(d) A and D
Complete the following chemical equations: C2H5OH+O2→
When you add a few drops of acetic acid to a test-tube containing sodium bicarbonate powder, which one of the following is your observation?
(A) No reaction takes place
(B) A colourless gas with pungent smell is released with brisk effervescence
(C) A brown coloured gas is released with brisk effervescence
(D) Formation of bubbles of a colourless and odourless gas
Give the name and structural formula of one homologue of HCOOH.
What type to compound is CH3COOH?
How does ethanoic acid react with sodium hydrogen carbonate? Give equation of the reaction which takes place.
The next higher homologue of ethanoic acid is ______.
What do you notice when acetic acid reacts with metals?
A student adds 4 mL of acetic acid to a test tube containing 4 mL of distilled water. He then shakes the test tube and leaves it to settle. After about 10 minutes he observes:
(A) a layer of water over the layer of acetic acid
(B) a layer of acetic acid over the layer of water
(C) a precipitate settling at the bottom of the test tube
(D) a clear colourless solution
On adding acetic acid to sodium hydrogen carbonate in a test tube, a student observes
(A) no reaction
(B) a colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) a strong smell of vinegar
What type of compound is formed by the reaction between acetic acid and an alcohol?
When acetaldehyde is oxidized with acidified potassium dichromate, it forms ______.
Convert ethane to acetic acid.
Distinguish between esterification and saponification reactions with the help of chemical equations for each.
Write the molecular formula of the given compound.
Sodium ethanoate
What are catalysts?
Write the chemical equation for the following:
Esterification Reaction
