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प्रश्न
Complete the given analogy.
Murukku from hot oil: ______:: Coffee powder residue from decoction: ______
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उत्तर
Murukku from hot oil: filtration :: Coffee powder residue from decoction: filtration
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संबंधित प्रश्न
What do you mean by the inter-molecular spaces? How do they vary in different states of matter?
Name the terms for the change of a solid into liquid.
Name two processes which provide the best evidence for the motion of particles in matter.
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
Name the property which allows metals to be hammered into thin sheets.
What are pure substances ? Give two examples of pure substances.
A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.
(a) Which liquid could be an element ? Name this element.
(b) Which liquid could be a mixture ? Name this mixture.
(c) Which liquid could be a compound ? Name this compound.
(d) What could the solid D be ?
(e) What do you think is liquid E ?
How will you separate a mixture of common salt, sulphur powder and sand ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
From what substance has the potter made all the things?
All the matter made of ______.
