Solvent extraction - class-VII
Description: solvent extraction | |
Number of Questions: 41 | |
Created by: Jatin Goyal | |
Tags: separation of substances is matter pure is matter around us pure elements, compounds and mixtures further aspects of equilibria structure of matter and molecule basic analytical techniques chemistry matter around us the nature of matter |
A mixture contains two solids A and B. Solid A is light in weight while solid B is very heavy. Their sizes are almost same. Here, A is the unwanted component. To get pure solid B, which separation method would you suggest?
Which of the following mixtures will be the most difficult do separate?
Benzene and water can be separated by
To separate ammonium chloride from common salt, we use:
Sand and water can be separated by:
You can use decantation to separate:
A small boy mischievously mixed small pebbles into a bag of pulses. What method will you employ to separate the mixture?
Greasy spots can be removed from clothes by:
Wheat flour can be separated from wheat bran by:
Seperation of two immiscible liquids is based on :
While separating oil and water, which component forms the upper layer ?
Winnowing is used only for:
A vendor sells white powdered salt mixed with white powdered stone. The knowledge of which property will help you detect this malpractice?
In a separating funnel, one phase is ______ and other phase is : .
We sprinkle water in a dirty room before sweeping because:
A mixture of oil and water is separated by:
Oil and water are miscible liquids.
Mixture of ${\text{Al}}{\left( {{\text{OH}}} \right) _3}\,\,{\text{and}}\,\,{\text{Fe}}{\left( {{\text{OH}}} \right) _3}$ can be separated by
Separation of $CCl 4$ from $CS _2$ can be carried out by ______ method.
Two immiscible liquids are separated by?
Name a technique used to separate : Petrol and water
Filtration as a method of separation can be used for mixtures that are :
The process of settling down of heavier, insoluble particles in an undisturbed mixture solution is called:
A very large quantity of mixture contains tiny particles of three different substances X, Y, and Z. They are of the same size, cubical in. shape and yellow in color. X particles are very heavy, insoluble, non-magnetic and contribute $50\, \%$ of the mixture. Y particles are very light, insoluble, non-magnetic and contribute $40\, \%$ of the mixture. And Z particles are actually iron pieces. Which of the following methods can separate X, Y, and Z in the fastest manner?
The components of a mixture can be separated only by chemical means.
Heavy water is called as heavy because it:
Some iron fillings are mixed with sand. We can separate them using magnetic separation method. This method is applicable only when:
Wheat flour is separated from wheat bran by the method of:
Choose the substance that is used as a filter.
The methods of separation used in municipal water works are:
Which of the following solvents is used for separation of mixture of sand and sulphur?
How is scrap-iron separated from other wastes in a scrap yard?
Winnowing is used to seperate:
Sand and water are separated by the method of:
In a separating funnel, organic phase is always _______ aqueous phase.
X and Y are liquids with unequal densities. Which method can be employed to separate them?
What seperation technique will you use for seperating:
(a) Oil from water
(b) Tea leaves from tea
(c) Wheat grains from husk
A student accidentally poured a blue liquid into a beaker of water in the laboratory. The blue liquid is immiscible in water and is denser than water. What must he use to separate the 2 liquids?
We can separate alcohol dissolved in water by using a separating funnel.
A mixture of chloroform and water taken in a separating funnel is mixed and left undisturbed for some time. The upper layer in the separating funnel will be:
Which of the following is the seperation technique to seperate mercury and water?