MEDIUM
9th CBSE
IMPORTANT
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You are provided with a mixture of iron filing and sulphur powder. When you add carbon disulphide to the mixture, you would observe:
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Important Questions on Is Matter Around Us Pure?
EASY
9th CBSE
IMPORTANT
The colour of sodium chloride and ammonium chloride respectively is:
MEDIUM
9th CBSE
IMPORTANT
In the laboratory, carbon disulphide is used as a solvent to separate a mixture of iron filings and Sulphur powder. What precaution has to be taken with carbon disulphide?
EASY
9th CBSE
IMPORTANT
In an experiment to separate the components of a mixture of sand, common salt and ammonium chloride, the component which will be removed by filtration is:
MEDIUM
9th CBSE
IMPORTANT
The correct procedure for heating a mixture of iron filings and sulphur powder is:
EASY
9th CBSE
IMPORTANT
Sulphur powder dissolves carbon disulphide to form yellow coloured solution but solid sulphur reappears by:
EASY
9th CBSE
IMPORTANT
While separating the components of a mixture of sand, camphor and common salt, Mohan added water to the mixture in a beaker and stirred it well. He observed that component that has dissolved in water is:
EASY
9th CBSE
IMPORTANT
Sample 'A' contains iron filings and sulphur powder, Sample 'B' is iron sulphide. Sample 'A' and 'B' are taken on a watch glass and a bar magnet is rolled over both.
You will observe that:
EASY
9th CBSE
IMPORTANT
In a china dish, of iron filings and of sulphur powder are mixed properly. Suggest a method to separate the individual constituents from its mixture.
