State whether the following statements are true or false.
(a) A mixture of oil and water can be separated by filtration.
(b) Water can be separated from salt by evaporation.
(c) A mixture of wheat grains and wheat flour can be separated by sieving.
(d) A mixture of iron filings and rice flour can be separated by a magnet.
(e) A mixture of wheat grains and rice flakes can be separated by winnowing.
(f) A mixture of tea leaves and milk can be separated by decantation.
(a) A mixture of oil and water can be separated by filtration.
(b) Water can be separated from salt by evaporation.
(c) A mixture of wheat grains and wheat flour can be separated by sieving.
(d) A mixture of iron filings and rice flour can be separated by a magnet.
(e) A mixture of wheat grains and rice flakes can be separated by winnowing.
(f) A mixture of tea leaves and milk can be separated by decantation.
(a)
A mixture of oil and water can be separated by decantation, and cannot be separated by filtration, as both of them are liquids.
Hence, the given statement is false.
(b)
Process of conversion of water to its vapour is called evaporation. It can be used to separate water from salt.
Hence, the given statement is true
(c)
Sieving is used to separate those solid mixtures which have components of different sizes. Wheat flour and wheat grains have different sizes.
Hence, the given statement is true.
(d)
Iron fillings get attracted to the magnets, while rice flour is non-magnetic in nature, and do not get attracted by magnets. So, we can use magnets to separate iron fillings from rice flour.
Hence, the given statement is true.
(e)
Winnowing is used to separate heavier and lighter components of a mixture by wind or by blowing air. We can separate wheat grains and rice flakes by this method.
Hence, the given statement is true.
(f)
Decantation is the process of pouring out the liquid without disturbing the sediment, that has settled at the bottom.Tea leaves and milk can be separated by this method.
Hence, the given statement is true.
A mixture of oil and water can be separated by decantation, and cannot be separated by filtration, as both of them are liquids.
Hence, the given statement is false.
(b)
Process of conversion of water to its vapour is called evaporation. It can be used to separate water from salt.
Hence, the given statement is true
(c)
Sieving is used to separate those solid mixtures which have components of different sizes. Wheat flour and wheat grains have different sizes.
Hence, the given statement is true.
(d)
Iron fillings get attracted to the magnets, while rice flour is non-magnetic in nature, and do not get attracted by magnets. So, we can use magnets to separate iron fillings from rice flour.
Hence, the given statement is true.
(e)
Winnowing is used to separate heavier and lighter components of a mixture by wind or by blowing air. We can separate wheat grains and rice flakes by this method.
Hence, the given statement is true.
(f)
Decantation is the process of pouring out the liquid without disturbing the sediment, that has settled at the bottom.Tea leaves and milk can be separated by this method.
Hence, the given statement is true.
