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Solutions
Short Answer Type
81.
50 mL of a liquid A when mixed with 50 mL of liquid B, the resulting volume is 100.5 ml. What do you think about nature of solution?
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82.
Mention two biological phenomena regulated by osmosis in plants and animals.
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83.
What happens if pressure greater than osmotic pressure is applied on the solution separated by a semi-permeable membrane from the solvent?
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84.
10 mL of a liquid A was mixed with 10 mL of liquid B. The volume of resulting solution was found to be 19.9 mL. What do you conclude?
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85.
Ethanol is an organic compound, yet it is freely miscible with water. Why?
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86.
In cold countries, ethylene glycol is added to water radiators of cars during winter. Why?
Answer:
This causes lowering in freezing point of water and therefore water does not freeze in radiators.
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87.
What is a semi-permeable membrane?
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Long Answer Type
88.
Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.
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Short Answer Type
89.
Define the following terms:
Mole fraction
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90.
Define the following terms:
Molality
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