Advertisements
Advertisements
प्रश्न
Fill in the following blanks with suitable words :
If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................
Advertisements
उत्तर
If a mixture contains iron fillings as one of the constituents, it can be separated by using a magnet.
APPEARS IN
संबंधित प्रश्न
The molecules can move freely anywhere in
Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?
Name the property which enables metals to be drawn into wires.
What is meant by saying that non-metals are brittle ?
What is the general name of the materials which contain at least two pure substances and show the properties
of their constituents ?
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
What are the two types of pure substances? Give one example of each type.
Which of the following are not compounds ?
Chlorine gas, Potassium chloride, Iron powder, Iron sulphide, Aluminium foil, Iodine vapour, Graphite, Carbon monoxide, Sulphur powder, Diamond
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
What is meant by the concentration of a solution ?
Milk of Magnesia is :
Fill in the following blanks with suitable words :
The separation of liquids by fractional distillation is based on the difference in their .....................
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
What is chromatography ? State its two applications.
Naphthalene can be separated from sand :
Which of the following cannot be separated from air by the process of fractional distillation ?
Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.
- What could X be ?
- What could Y be ?
- Name the process Z.
- Which process would you use to recover both the components X and Y from tincture of iodine ?
- Which process can be used to recover only component Y from tincture of iodine ?
Compressibility of solids: ______.
Define the term matter.
