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प्रश्न
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 |
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उत्तर
| Column A | Column B | ||
| (a) | Metals | (iii) | Lustrous |
| (b) | Molecules | (iv) | Smallest unit of Compound |
| (c) | Non-Metals | (ii) | Brittle |
| (d) | Noble Gases | (i) | Non-Reactive |
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संबंधित प्रश्न
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
Give two examples of the following.
Inert gases
Fill in the blank
A metal which is a poor conductor of electricity is _______.
Indicate whether the following statement is true or false:
Molecules combine to form atoms
Tick (√) the correct alternative from the choice given for the following statement.
Atoms of different kinds combine to form molecules of
Give the name of the radical - SO4
Explain the difference between Atoms and molecules.
‘The modern periodic table consists of elements arranged according to their increasing atomic numbers’. With reference to elements with atomic numbers 1 to 20 only in the periodic table – differentiate them into – metallic elements, metalloids, non-metals & noble gases.
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
