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प्रश्न
Fill in the blank
The most abundant element in the earth’s crust is _______.
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उत्तर
The most abundant element in the earth’s crust is oxygen.
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संबंधित प्रश्न
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
Name the substance you will add to speed up sedimentation.
Find the atomicity of the Following molecule:
Calcium Chloride
Fill in the blank
A metal which is a poor conductor of electricity is _______.
Indicate whether the following statement is true or false:
Molecules can exist independently.
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – two coloured gases (with their colours)
Select the correct answer from the choice given below.
The negatively charged particles in an atom
Select the correct answer from the choice given below.
A group of atoms of elements
Elements are made up of______ kinds of atoms.
Differentiate between elements and compounds.
