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1. To separate salt from sea water, ___ method is used.
2. The homogeneous mixture of a metal and a non-metal is known as _.
3. A miscible liquid mixture having a boiling point difference of 10 °C can be separated by __ distillation.

Across
4. Loading tanks in water purification technique contain _ , which helps to separate suspended impurities.
5. In ______ technique, components are separated based on attraction towards paper and water.

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Solution

Down:
1. Evaporation
2. Alloy
3. Fractional

Across:
4. Alum
5. Chromatography

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Q. Fill in the following blanks with suitable words :
(a) Miscible liquids are separated by .........................
(b) Immiscible liquids are separated by using a ........................
(c) A mixture of kerosene and petrol can be separated by ........................
(d) The separation of liquids by fractional distillation is based on the difference in their ............................
(e) The gases of air can be separated by fractional distillation of liquid air because they have different ......................
(f) A heterogeneous mixture of liquid and solid is conveniently separated by ............................
(g) If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................

Q. The method that can be used to separate a liquid from a mixture of miscible liquids with different boiling points is ___________ distillation.

Fill in the following blanks :

(a) Milk is a ___ solution but vinegar is a ___ solution.

(b) A colloid is a___ mixture and its components can be separated by the technique known as___

Q. Fill in the following blanks :
(a) Milk is a .................... solution but vinegar is a .................... solution.
(b) A colloid is a ..................... mixture and its components can be separated by the technique known as ......................

Q. Question 25
Fill in the blanks
(a) A colloid is a mixture and its components can be separated by the technique known as___.
(b) Ice; water and water vapour look different and display different ___ properties but they are ___ the same.
(c) A mixture of chloroform and water are taken in a separating funnel is mixed and left undisturbed for some time. The upper layer in the separating funnel will be of ___ and the lower layer will be that of ______ and the lower layer will be that of____.
(d) A mixture of two or more miscible liquids, for which the difference in the boiling points is less than 25 K can be separated by the process called ___.
(e) When light is passed through water containing a few drops of milk, it shows a bluish tinge. This is due to the ___ of light by milk and the phenomenon is called ___. This indicates that milk is a ___ solution.

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