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प्रश्न
Name four substances that can be used as filters.
उत्तर
(i) Filter paper
(ii) A bead of sand
(iii) Charcoal
(iv) A piece of muslin cloth.
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संबंधित प्रश्न
Which one of the following is most likely to exhibit Tyndall effect ?
Which of the following can be separated by using a separating funnel and which cannot be separated by using a separating funnel ?
- water and kerosene mixture
- water and acetone mixture
Give reasons for your answer.
The chemical which can be used to separate a mixture of carbon powder and sulphur powder successfully is :
Give reason:
Why sulphur does dissolve when carbon disulphide is added to a mixture of iron and sulphur but not when it is added to iron sulphide?
Name the components present in the following mixture:
Crude petroleum oil
Write “true” or “false” for the following statement
Steel is an alloy of iron and aluminum.
Give an example of mixtures of elements and compounds.
Name the following
A black non-metallic component of the mixture gunpowder.
Suggest separation technique(s) one would need to employ to separate the following mixture.
Common salt, water and sand
You are given two samples of water labelled as ‘A’ and ‘B’. Sample ‘A’ boils at 100°C and sample ‘B’ boils at 102°C. Which sample of the water will not freeze at 0°C? Comment.
