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प्रश्न
Fill in the following blanks with suitable words :
Brass is an alloy which is considered a ..............
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उत्तर
Brass is an alloy, which is considered as mixture.
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संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
Fill in the blank :
The state of matter with definite volume and definite shape is called______
When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.
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 one solid, one liquid and one gaseous non-metal.
You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?
Classify the following into metals, non-metals and metalloids:
Silicon, Mercury, Diamond, Sulphur, Iodine, Germanium, Sodium, Carbon, Magnesium, Copper, Boron, Helium
The element which is not common between the compounds called baking soda and soda ash is
The elements which normally exist in the liquid state are :
Explain what happens when a beam of light is passed through a colloidal solution.
Name the process by which common salt is purified.
How will you separate a mixture of iron filings and powdered carbon ?
Explain how, nitrogen , oxygen and argon gases are separated from air.
Explain the meaning of the term ‘matter’.
Matter is made up of ______.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
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 |
Liquids have ______.
Gases change to liquid by the process of ______.
Higher the temperature, the higher the kinetic energy of particles.
