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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
Tick the most appropriate answer
Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Sand
State the number of atoms of C6H12O6
Tick (√) the correct alternative from the choice given for the following statement.
Sand is a compound of
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
Define the terms elements, compounds & mixtures with a view to show their basic difference.
‘An atom is the basic unit of an element’. Draw a diagram of an atom – divisible as seen today.
Explain the term ‘mixture’.
Give two example of elements.
Higher-Order Thinking questions:
Why is hydrogen considered an element?
