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प्रश्न
Give two example of elements.
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उत्तर
Example: Hydrogen, Oxygen is made from atoms containing a single proton and a single electron.
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संबंधित प्रश्न
Define the term: Element
Name: A form of carbon used as a gem
Find the atomicity of the Following molecule:
Acetic Acid
Select the correct answer from the choice given below.
The unreactive non-metallic element
Select the correct answer from the choice in the bracket.
The positively charged particle of an atom.
‘An atom is the basic unit of an element’. Draw a diagram of an atom – divisible as seen today.
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
The diagram represents fractional distillation for the separation of mixtures. Answer the following :
- Can two immiscible liquids be separated by this process?
- Separation of liquids by this process is based on which physical property?
- If methyl alcohol & water are to be separated, which liquid would remain in flask ‘X’ after condensation.
- Give a reason for the above answer.
- State the purpose of the fractionating column in the apparatus.
Elements are made up of______ kinds of atoms.
Reason out
Elements are called semimetals.
