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प्रश्न
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.
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उत्तर
Tyndall effect – Scattering of light
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संबंधित प्रश्न
Define: Formula
State the number of atoms of CaCO3
Tick (√) the correct alternative from the choice given for the following statement.
Atoms of different kinds combine to form molecules of
Tick (√) the correct alternative from the choice given for the following statement
A gaseous non-metal.
Differentiate between the terms –
elements, compounds & mixtures.
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
Select the correct answer from the choice given below.
A group of atoms of elements
Explain the difference between Metals and non-metals.
What are elements? What are they made of?
Matter is its simplest form is called ______.
