Decantation is a:
Decantation involves the separation of liquid from solid and other immiscible (non-mixing) liquids, by removing the liquid layer at the top from the layer of solid or liquid below. This process can separate two liquids that do not mix, e.g., oil and water.
Mercury has a low boiling point. Therefore, it can be purified by the tech process:
Distillation is useful low boiling metals like zinc and mercury. The impure metal evaporated to obtain pure metals distillate.
Which of the following set's components from a homogenous mixture?
A homogeneous mixture appears uniform, regardless of where you sample it. Examples of homogeneous mixtures include air, saline solution, most alloys, and bitumen.
A Homogeneous Mixture:Option~
The process of_________is used to separate the component from a solid-solid mixture which_________on heating and the other component being non-volatile.
The sublimation process is used to separate the component from a solid-solid mixture which sublimes on heating and other components being non-volatile.
Sugar Obtained From Dates And Sugarcane Is Mixed. Then:
It will be a pure substance because the chemical composition is both the same(sucrose).
In the laboratory, carbon disulphide is used as a solvent to separate a mixture of iron filings and sulphur powder. What precaution has to be taken with carbon disulphide?
(ii) When HCl is added to a mixture of iron filings and sulphur powder, then iron being more reactive than hydrogen will displace hydrogen from the acid, forming its salt instead. The sulphur powder will not react with HCl. Following is the reaction between Fe and HCl
Fe + 2HCl → FeCl2 + H2
In an experiment to separate the components of a mixture of sand, common salt and ammonium chloride, the component which will be removed by filtration is :
1) Aim: To Separate Ammonium Chloride (NH4Cl) and Common salt (NaCl) and Sand.
Materials required: Mixture of NH4Cl and NaCl, Inverted funnel, China Dish, Cotton plug, Burner
i. Put the mixture in a china dish and put it on burner ii. Cover the china dish with an inverted funnel
iii. Cover the stem of the funnel with a cotton plug iv. Heat for some time v. Close the Burner when you observe vapours in the funnel
Observation: You can observe the solidified Ammonium Chloride (NH4Cl) on the funnel's internal wall.
Conclusion-: The NH4Cl is a volatile substance and hence got sublimed into the gaseous form on heating. When it cooled down, it got solidified on the wall of the inverted funnel.
Hence, we have separated Ammonium Chloride from the mixture, and we have a mixture of NaCl and Sand.
2.) Aim: To separate NaCl and Sand Materials required: Water, filter Paper.
i. Add some water to the Mixture.
ii. Use a filter paper to separate sand from the mixture through the process of filtration.
iii. Boil the remaining mixture of water and salt.
iv. Separate the mixture of water and Salt through the process of vaporization.
Sulphur powder dissolves carbon disulphide to form yellow coloured solution, but solid sulphur reappears by :
While separating the components of a mixture of sand, camphor and common salt, Mohan added water to the mixture in a beaker and stirred it well. He observed that component that has dissolved in water is :
In a china dish, 7g iron filings and 4g sulphur powder are mixed properly. Suggest a method to separate the individual constituents from its mixture.
A mixture of sand, ammonium chloride and sodium chloride is dissolved in water and filtered. The filtrate consists of :
To separate a mixture of iron filings, sulphur powder and iron sulphide, which sequence of methods should be used?
A mixture contains iodine, ammonium chloride and sand. Only iodine and ammonium chloride are sublime. Only iodine dissolves in carbon tetrachloride. How will you separate the three components? The sequence of steps will be :
The separation steps are thus as follows :
1) Addition of CCl4
The process of: can separate
Mixture of common salt and water
A mixture containing iron filings and sulphur powder is spread on the white paper, and a magnet is rolled in it. The particles which cling to the magnet are :
Rusting of an article made up of iron is called
A mixture of sulphur and carbon disulphide is
Tincture of iodine has antiseptic properties. This solution is made by dissolving
Tincture of iodine is an antiseptic, also called a weak iodine solution. It is usually 27% elemental iodine, potassium iodide or sodium iodide, dissolved in a mixture of ethanol and water.
Which of the following are homogeneous in nature? (i) ice (ii) wood (iii) soil (iv) air