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प्रश्न
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
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उत्तर
BRASS is HOMOGENOUS because the mixture is just the same throughout and its constituents cannot be distinguished from each other i.e. composition is the same throughout.
Whereas in Heterogenous mixture of iron and sulphur, the constituents. It can be separated easily by a magnet, the particles can be distinguished from each other and composition is not uniform.
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संबंधित प्रश्न
Fill in the blank
A pure substance has definite.................. and constant ..............
Give two examples of the following.
Metals which are soft
Give one use of the following substance:
Brass
Answer the following question:
Why are copper and aluminium used to make electric wires?
Match the Columns:
| Column A | Column B | ||
| (a) | Metals | (i) | Non-Reactive |
| (b) | Molecules | (ii) | Brittle |
| (c) | Non-Metals | (iii) | Lustrous |
| (d) | Noble Gases | (iv) | Smallest unit of Compound |
Tick (√) the correct alternative from the choice given for the following statement
A metal which is brittle
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
Select the correct answer from the choice given below.
The negatively charged particles in an atom
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
Differentiate between elements and compounds.
