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प्रश्न
Give two examples of the following.
Inert gases
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उत्तर
Helium, Neon
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संबंधित प्रश्न
Define the term: Element
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
Mention three gaseous elements and write their molecular formulae
State the number of atoms of H2SO4
Give one use of the following substance:
Coal
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
Indicate whether the following statement is true or false:
Molecules combine to form atoms
Define the terms elements, compounds & mixtures with a view to show their basic difference.
Select the correct answer from the choice given below to complete the sentence :
An example of a monoatomic molecule is ___________.
______ is the life-giving element is the air.
