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प्रश्न
State the property of the following substance.
Magnesium reacts with dilute hydrochloric acid, liberating hydrogen gas.
विकल्प
Physical
Chemical
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उत्तर
Chemical
संबंधित प्रश्न
"A substance has a definite shape as well as a definite volume." Which physical state is represented by this statement?
Explain why, the diffusion of a solid in another solid is a very slow process.
Give one difference between atoms and molecules.
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles are far apart and move in all directions
State the main physical properties of matter.
Matter in any state is composed of particles. Compare the three states of matter i,e. solids, liquids, and gases with reference to:
(a) intermolecular space
(b) the intermolecular force of attraction
(c) movement of particles
Complete the statement given below by selecting the correct word.
Solids and liquids have a definite ____ but gases do not.
Match the following.
| Srl. no. | A | B | C |
| i | Separation of visible undesirable components | Water mixed with chalk powder | Magnetic Separation |
| ii | Separation of heavier and lighter components | Sand and water | Decantation |
| iii | Separation of insoluble impurities | Iron impurities | Filtration |
| iv | Separation of magnetic components from non-magnetic components | Rice and stone | Hand-picking |
| v | Separation of solids from liquids | Husk and paddy | Winnowing |
The feather and paper cup can float on the water.
Complete the Analogy.
Bucket: Plastic:: Table: ______.
