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प्रश्न
Name: Three different forms of carbon
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उत्तर
Three different forms of carbon are:
1. Diamond
2. Graphite
3. Coal
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संबंधित प्रश्न
Name the substance you will add to speed up sedimentation.
Name: a Liquid Metal
Indicate whether the following statement is true or false:
Molecules combine to form atoms
Classify substances into pure and impure substances in the form of a chart or tabulation.
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 unreactive non-metallic element
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.
Matter is its simplest form is called ______.
Elements contain the ______of the same kind.
