Class 7 th-Science 14.Element, Compound And Mixtures - Online Test
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Matter made of only one constituent is called--------- *
2 points
Mass and ........ are two important properties of matter. *
2 points
Scientists have discovered 118 elements of these ............... element occur in nature. *
2 points
The property of solubility of the substance in the solvent that moves up is used in the technique of chromatography *
2 points
An object is made of------------- *
2 points
A substance whose molecules are made of exactly alike atoms is called------ *
2 points
------- is also used for purification of impure liquids. *
2 points
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