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प्रश्न
Fill in the blank
Liquids have a definite ______
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उत्तर
Liquids have a definite Volume.
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संबंधित प्रश्न
Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into
(i) osmosis, and (ii) diffusion :
- swelling up of a raisin on keeping in water
- spreading of virus on sneezing
- earthworm dying on coming in contact with common salt
- shrinking of grapes kept in thick sugar syrup
- preserving of pickles in salt
- spreading of smell of cake being baked in the kitchen
- aquatic animals using oxygen dissolved in water during respiration
An inflated balloon full of air goes down slowly (becomes smaller and smaller slowly) even though the knot at the mouth of the balloon is airtight. And after a week all the air has escaped from the balloon. Explain how the air particles got out of the balloon.
Name a metal which is soft and a non-metal which is hard.
Name one solid, one liquid and one gaseous non-metal.
Fill in the following blanks with suitable words :
An element is made up of only one kind of ........
What is the other name for impure substances ? Give two examples of impure substances.
How would you confirm that a colourless liquid given to your is pure water ?
State whether the following statement is true or false :
Bread is an example of solid foam.
Define Aerosol Give one example.
Define the emulsion. Give one example.
What is meant by the concentration of a solution ?
What is meant by a solution?
How will you separate a mixture containing sand and sugar ?
How will you separate water from mustard oil ?
The dyes present in fountain pen ink can be separated by the technique of :
The particles in the matter are extremely small and can be seen even with a powerful microscope.
Which among the following is not a matter?
Rusting of an article made up of iron is called
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 |
