Advertisements
Advertisements
प्रश्न
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
विकल्प
evaporation
simple distillation
fractional distillation
crystallisation
Advertisements
उत्तर
simple distillation
In the mixture of iodine and alcohol, both are miscible. So, distillation process is used to recover both the components.
APPEARS IN
संबंधित प्रश्न
Name a non-metal which is a good conductor of electricity.
Name a liquid which can be classified as a pure substance and conducts electricity.
State any two properties for believing that aluminium is a metal.
Name a metal which is yellow in colour.
There is a large group of materials P which can be divided into three groups Q, R and S on the basis of their properties. The substances belonging to group Q can be solids, liquids or gases. The solids belonging to group Q are usually electrical insulators. Most of the substances of group R are solids which are good conductors of electricity. The substances belonging to group S are neither insulators like Q nor good conductors like R. The properties of S are intermediate between those of Q and R.
- What could the group of materials P be ?
- Name the substances Q. Give two examples of such substances.
- Name the substances R. Write two examples of such substances.
- Name the substances S. Give two examples of such substances.
- Out of Q, R and S, which substances are malleable and ductile ?
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
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)
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
What is the general name of the process by which tea-leaves are separated from prepared tea ?
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
Which of the following cannot be separated from air by the process of fractional distillation ?
What's the solution?
We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.
Wipe the board with a duster and then tap the duster against the table. What do you see?
Define the term matter.
Match the physical quantities given in column A to their S I units given in column B:
| (A) | (B) | ||
| (a) | Pressure | (i) | cubic metre |
| (b) | Temperature | (ii) | kilogram |
| (c) | Density | (iii) | pascal |
| (d) | Mass | (iv) | kelvin |
| (e) | Volume | (v) | kilogram per cubic metre |
Solid is an arrangement of particles ______.
Define the term matter.
Define the term matter.
