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प्रश्न
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – two coloured gases (with their colours)
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उत्तर
(i) Chlorine – greenish-yellow
(ii) Nitrogen dioxide – reddish brown.
संबंधित प्रश्न
Name the substance you will add to speed up sedimentation.
Fill in the blank
A metal which is a poor conductor of electricity is _______.
Fill in the blank
A liquid non-metal is _______.
Tick (√) the correct alternative from the choice given for the following statement
The most ductile metal.
Differentiate between homogenous & heterogeneous mixtures.
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
Higher Order Thinking Skills.
List out the metals, non-metals and metalloids which you use in your house, schools. Compare their properties.
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
Why are utensils made up of aluminium and brass?
Name the process associated with the following
A fine beam of light entering through a small hole in a dark room illuminates the particles in its paths.
