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प्रश्न
Ester is a sweet-smelling compound.
विकल्प
Right
Wrong
उत्तर
Ester is a sweet-smelling compound- Right
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संबंधित प्रश्न
The molecular formula of acetic acid is _________ .
(a) CH3COOH
(b) CH3 – CH3
(c) C6H6
(d) C2H4
Write three different chemical reactions showing the conversion of ethanoic acid to sodium ethanoate. Write balanced chemical equation in each case. Write the name of the reactants and the products other ethanoic acid and sodium ethanoate in each case.
A student puts a drop of reaction mixture of a saponification reaction first a blue litmus paper and then on a red litmus paper. He may observe that:
(a) There is no change in the blue litmus paper and the red litmus paper turns white.
(b) There is no change in the red litmus paper and the blue litmus paper turns red.
(c) There is no change in the blue litmus paper and the red litmus paper turns blue.
(d) No change in colour is observed in both the litmus papers
Fill in the following blank with a suitable word:
The organic acid present in vinegar is ______.
Choose those compounds from the following which can turn blue litmus solution red:
HCHO, CH3COOH, CH3OH, C2H5OH, HCOOH, CH3CHO
Give reasons for your choice.
What do you notice when acetic acid reacts with litmus?
Name the substance used to change acetic acid to acetic anhydride?
Give two tests to show that CH3COOH is acidic in nature ?
If you take a pinch of sodium hydrogen carbonate powder in a test-tube and add drop-by-drop acetic acid to it, what would you observe immediately? List any two main observations.
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 NaHCO3 to acetic acid, a gas is evolved which turns lime water milky due to the formation of:
(1) Calcium bicarbonate
(2) Calcium hydroxide
(3) Calcium carbonate
(4) Calcium acetate
Write balanced euation for the following :
Ethane is burnt in air.
Why is pure acetic acid also known as glacial acetic acid?
State how the following conversions can be carried out:
Ethyl chloride to Ethene.
State how the following conversions can be carried out:
Ethyl alcohol to Ethane
Give reason for the following :
Ethyne is more reactive than ethane
Ethanoic acid _________.
CH3–CH2–CHO : propanal : : CH3–COOH : _______
Bubbles are seen in the test tube during the preparation of lime water.
A spatula full of sodium carbonate is taken in a test tube and 2 mL of dilute ethanoic acid is added to it.
Write a chemical equation for the reaction.
