Long Answer Type(a) What is fragmentation in organisms? Name a multicellular organism which reproduces by this method.
(b) What is regeneration in organism? Describe regeneration in Planaria with the help of a suitable diagram.
(a) What is fragmentation in organisms? Name a multicellular organism which reproduces by this method.
(b) What is regeneration in an organism? Describe regeneration in Planaria with the help of a suitable diagram.
(a) In a tabular form, differentiate between ethanol and ethanoic acid under the following heads:
(i) Physical state
(ii) Taste
(iii) NaHCO3 test
(iv) Ester test
(b) Write a chemical reaction to show the dehydration of ethanol.
(a)
|
Property |
Ethanol |
Ethanoic acid |
|
|
(i) |
Physical state |
Ethanol is a colorless liquid with pleasant odor |
Ethanoic acid is colorless, pungent smelling liquid |
|
(ii) |
Taste |
Ethanol is bitter to taste |
Ethanoic acid is sour to taste |
|
(iii) |
NaHCO3 test |
Ethanol does not react with sodium bicarbonate |
When ethanoic acid reacts with sodium NaHCO3 with the evolution of carbon dioxide gas. |
|
(iv) |
Ester test |
Ethanol on reaction with ethanoic acid in the presence of acid forms ester. |
Ethanoic acid on reaction with alcohols in the presence of conc. Sulphuric acid to form ester./ |
(b) Ethanol undergoes dehydration to form ethane.
(a) What is soap? Why are soaps not suitable for washing clothes when the water is hard?
(b) Explain the action of soap in removing an oily spot from a piece of cloth.
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