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प्रश्न
Write true or false
All pure substances have characteristic melting and boiling points.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Name the main metal present in the following:
Chlorophyll
Give four examples of non-metallic elements.
What do you understand by :
Metalloids
Fill in the blank:
________ and _______ are pure substances.
Fill in the blank
A pure substance has definite _______ and constant _________.
Fill in the blank
Use of a __________ to separate the components of a mixture of solids is based on the difference in the size of the components.
Fill in the blank.
_________ is used when the constituents of a mixture of solids have a difference in their weights.
Differentiate between the terms elements, compounds, and mixtures with suitable examples.
Write the differences between elements and compounds and give an example for each.
When two or more elements combine together they form ______.
