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प्रश्न
Indicate whether the following statement is true or false:
All elements are artificially prepared
विकल्प
True
False
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उत्तर
False
Correct Statement: All elements are made up of a limited number of basic substances
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संबंधित प्रश्न
Fill in the blank
A metal which is a liquid at room temperature is _______.
Indicate whether the following statement is true or false:
Molecules combine to form atoms
Complete the statement – an element is a pure substance made up of ____________ atoms.
Select the correct answer from the choice given below.
The unreactive non-metallic element
Select the correct answer from the choice given below.
The element which is malleable
Write the names of elements from the following symbol:
Br
Select the correct answer from A, B, C, D & E for the statement given below :
A mixture consisting of elements & a compound.
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.
______ is the life-giving element is the air.
