Please select a subject first
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Write true or false
Milk is an emulsion.
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Write true or false
The constituents of a mixture can only be separated by chemical means
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Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.
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Differentiate between the following
Supernatant liquid and Fill rate
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Name two methods by which solid-solid mixtures can be separated.
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How can you separate iron metal from non-magnetic impurities ?
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Name the different types of chromatographic techniques.
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Why is filtration a better technique than sedimentation and decantation ?
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How is distillation method different from evaporation?
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What is centrifugation ? Also write the principle on which it works.
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Define water of crystallization. Give two examples with formulae.
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Give two examples of Crystalline anhydrous substances.
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Give two examples for Deliquescent substance.
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What do you observe when Blue vitriol is heated?
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Water turns the colour of anhydrous copper sulphate .................
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The sticky substance formed when soap is added to hard water is ______.
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Give one word for the following statement:
A substance which does not contain water .
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Give one word for the following statement:
A property due to which a substance absorbs water without dissolving.
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Give one word for the following statement:
Water molecules in loose chemical combination with other substances.
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Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Ammonium chloride from sand
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