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प्रश्न
A student puts a drop of acetic acid first on a blue litmus paper and then on a red litmus paper. He would observe that
(A) the red litmus paper turns colourless and there is no change in the blue litmus paper.
(B) the red litmus paper turns blue and the blue litmus paper turns red.
(C) there is no change in the red litmus paper and the blue litmus paper turns red.
(D) there is no change in the blue litmus paper and the red litmus paper turns blue.
उत्तर
Being an acid, acetic acid turns blue litmus paper red. Thus, on putting a drop of acetic acid on blue and red litmus papers, there is no change in the red litmus paper, while the blue litmus paper turns red.
Hence, the correct option is C.
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संबंधित प्रश्न
Name one chemical compound which can be used to distinguish between ethanol and ethanoic acid.
How would you distinguish between ethanol and ethanoic acid by chemical test?
If you are asked to report your observations about the following two properties of acetic acid, what would you report?
(i) Odour
(ii) Effect on litmus
A student takes Na2CO3 powder in a test tube and pours some drops of acetic acid over it. He observes:
(A) no reaction in the test tube
(B) colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) white fumes with smell of vinegar
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
Name the first four members of alphatic carboxylic acid.
Give balanced chemical equations for the following conversion :
Ethanoic acid to ethyl ethanote
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
Ethanoic acid is also known as which of these?
Name the oxidising agent used in the conversion of ethanol to ethanoic acid.
