1.What difference in the property of two miscible liquids enables their separation by fractional distillation?2.Why is solution not heated to dryness to get crystals?3.Give one example each of homogeneous and heterogeneous mixture.4.Name the apparatus by which mixture of oil and water can be separated.5.How can we check whether the given soli substance is pure or not?6.A hard substance produces a tinkling sound when beat. Is it metal or a non- metal?7.Is brass a mixture or a compound?8.What type of solution is an alloy?Liquid solution or solid solution9.A mixture consisting of two miscible liquids 'A' and 'B' whose boiling points differ by 50 C can be separated by which process?10.Which separation, technique is employed to separate complex mixture of organic compounds like carbohydrates, amino acids. Vitamins, hormones, etc?11.In fractional crystallization two organic compounds gets differentiated on the basis of which property.12.Which method can be used to separate mixture of iron filings and common salt?13.Give one example of solid- liquid homogeneous mixture.14.What is a aquaregia?15.Which method is used to separate two immiscible liquids?16.Name two elements which are in liquid state at room temperature?
Answers
Answer:
10 cm. Find the height of the cuboid.
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of the total surface area of the cuboid and that of the cubes
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application
.. Find the length of the longest thin stick that can be kept in a room whose length, breadth and height
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1. A tall rectangular vessel is half-filled with water. The dimensions of its base are 50 cm x 30 cm
cube of edge 10 cm is dropped into the vessel. Find the rise in the water level in the
id cuboid of dimensions cm 4 cm x 2 cm is melted and cast into identical cubes of edge
Abd cubet edge 10 cm is melted and cast into a cuboid whose base measures 20 cm by
Fauce each of edge om, are put one above the other to form a cuboid. Find the total
Acido dimensions 10 cm x 2 cm 2 cm is divided into cubes of edge 2 cm. Find the ratio
Wome and total surface aren, each face being rectangular. (The bottom of the stand is open.)liquids enables their separation by fractional distillation?2.Why is solution not heated to dryness to get crystals?3.Give one example each of homogeneous and heterogeneous mixture.4.Name the apparatus by which mixture of oil and water can be separated.5.How can we check whether the given soli substance is pure or not?6.A hard substance produces a tinkling sound when beat. Is it metal or a non- metal?7.Is brass a mixture or a compound?8.What type of solution is an alloy?Liquid solution or solid solution9.A mixture consisting of two miscible liquids 'A' and 'B' whose boiling points differ by 50 C can be separated by which process?10.Which separation, technique is employed to separate complex mixture of organic compounds like carbohydrates, amino acids. Vitamins, hormones, etc?11.In fractional crystallization two organic compounds gets differentiated on the basis of which property.12.Which method can be used to separate mixture of iron filings and common salt?13.Give one example of solid- liquid homogeneous mixture.14.What is a aquaregia?15.Which method is used to separate two immiscible liquids?16.Name two elements which are in liquid state at room temperature?