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प्रश्न
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
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उत्तर
A mixture of kerosene and petrol can be separated by fractional distillation.
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संबंधित प्रश्न
Fill in the blank :
The state of matter with definite volume and definite shape is called______
All kinds of matter
Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?
During respiration, glucose and oxygen enter our body cells and waste products carbon dioxide and water leave the body cells by the process of :
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
Name a non-metal which is a good conductor of electricity.
State two physical properties on the basis of which metals can be distinguished from non-metals.
On the basis of composition of matter, milk is considered to be :
Which of the following are chemical changes and which physical ? Give reason.
- a glass bottle breaking
- coal burning in air
- making a cake
- wool being knitted into a sweater
What do you understand by the statement " the solubility of copper sulphate in water at 20°C is 20.7 g" ?
Which of the following is not an emulsion ?
Describe a method to separate a mixture of common salt and sand.
The material which is added to water during purification process at the water works so as to disinfect it is :
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
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 |
Gases do not diffuse very easily.
Define the term matter.
Define the term matter.
Define the term matter.
