Advertisements
Advertisements
प्रश्न
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
Advertisements
उत्तर
A mixture of kerosene and petrol can be separated by fractional distillation.
APPEARS IN
संबंधित प्रश्न
Name the processes involved in two cases.
Name the terms for the particles of matter which may or may not have independent existence.
Define the following term of Matter .
“Is malleable and ductile” best describes :
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
Explain what happens when a beam of light is passed through a colloidal solution.
What is a colloid ? Give two examples of colloids (or colloidal solutions)
The solubility of ammonium chloride in water at various temperatures is given below :
| Temperature | : | 10°C | 20°C | 40°C | 60°C | 80°C |
| Solubility | : | 24 g | 37 g | 41 g | 55 g | 66 g |
What mass of ammonium chloride would be needed to make a saturated solution of ammonium chloride in fifty grams of water at 40°C ?
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
Name the process by which the various gases of the air are separated.
Fill in the following blanks with suitable words :
Immiscible liquids are separated by using a .....................
How would you separate iodine from a mixture of iodine and common salt ?
The property which allows the metals to be hammered into their sheets is ______.
Rusting of an article made up of iron is called
Atoms or groups of atoms having a charge are called ______.
Higher the temperature, the higher the kinetic energy of particles.
Define the term matter.
Define the term matter.
