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CBSE Class 9 Answered

How will you separate the following: (i) Salt and sea water mixture      (ii) Poison from contents of bladder (iii) Components of ink               (iv) Pure alum from impure sample
Asked by Topperlearning User | 08 May, 2014, 08:48: AM
answered-by-expert Expert Answer
(I) Salt and sea water: Evaporation
(ii) Poison from contents of bladder: Chromatography
(iii) Components of ink: Evaporation
(iv) Pure alum from impure sample: Crystallisation
Answered by | 08 May, 2014, 10:48: AM

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CBSE 9 - Chemistry
Simple distillation is used for what types of mixtures?
Asked by Topperlearning User | 08 May, 2014, 08:45: AM
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CBSE 9 - Chemistry
Why is evaporation not preferred for separation of both salt and water from a salt water mixture? What other process can be used?
Asked by Topperlearning User | 08 May, 2014, 08:46: AM
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CBSE 9 - Chemistry
How will you separate the following: (i) Salt and sea water mixture      (ii) Poison from contents of bladder (iii) Components of ink               (iv) Pure alum from impure sample
Asked by Topperlearning User | 08 May, 2014, 08:48: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Chemistry
Describe the structure of the 'water condenser' used in the process of distillation. Why is water circulated through the condenser during distillation?
Asked by Topperlearning User | 08 May, 2014, 08:45: AM
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CBSE 9 - Chemistry
On what basis does the separation of different components of black ink takes place in chromatography?
Asked by Topperlearning User | 08 May, 2014, 08:50: AM
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CBSE 9 - Chemistry
How can we test the formation of saturated solution during the process of crystallisation?
Asked by Topperlearning User | 08 May, 2014, 08:51: AM
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CBSE 9 - Chemistry
What do you infer from the statement "In the process of chromatography, a sample of black ink drop split up into three coloured spots on filter paper strip"?
Asked by Topperlearning User | 08 May, 2014, 08:52: AM
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CBSE 9 - Chemistry
(a) What is the purpose of adding porcelain pieces in the distillation flask in the beginning of distillation process? (b) During distillation of salt water mixture, what remains behind in the distillation flask after completion of the distillation process and why?
Asked by Topperlearning User | 08 May, 2014, 08:53: AM
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CBSE 9 - Chemistry
(a) Why we cannot separate common salt from common salt - water mixture using filtration? (b) How is evaporation process used to obtain common salt from sea water on a large scale?
Asked by Topperlearning User | 08 May, 2014, 08:54: AM
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CBSE 9 - Chemistry
What is chromatography? Which is the simplest form of chromatography? What types of mixtures can be separated using this type of chromatography? What is the basis of this separation technique?
Asked by Topperlearning User | 08 May, 2014, 08:55: AM
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