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प्रश्न
Name one pair of liquids which can be separated by using a separating funnel.
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उत्तर
Kerosene and water are two immiscible liquids which can be separated by using a separating funnel.
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संबंधित प्रश्न
What are the conditions for 'something' to be called 'matter'?
When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.
- What could particles X be ?
- What do you think liquid Y is ?
- What is the zig-zag movement of X known as ?
- What is causing the zig-zag movement of particles X ?
- Name the scientist who discovered this phenomenon.
- What does this experiment tell us about the nature of liquid Y?
What is meant by saying that non-metals are brittle ?
Which of the following are compounds ?
- CO
- No
- NO
- Co
Which of the following is a sol ?
Shaving cream, Milk, Fog, Soap solution, Hairspray
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
Name the different types of solutions. Give one example of each.
What is the effect of temperature on the solubility of solids in liquids ?
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 ?
Name the process which can be used to recover salt from an aqueous salt solution.
Name the process which can be used to purify an impure sample of copper sulphate.
How will you separate water from mustard oil ?
A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.
- What could P, Q, R and S be ?
- How would you separate a mixture containing P, Q, R and S ?
Name the metals that are used in jewellery.
Complete the following table:
| S.No. | CELSIUS | KELVIN |
| 1. | 90°C | 363 K |
| 2. | ______ | 283 K |
| 3. | 63 °C | ______ |
| 4. | 250°C | ______ |
| 5. | ______ | 303 K |
Solids do not flow.
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
Define the term matter.
Define the term matter.
Define the term matter.
