Advertisements
Advertisements
प्रश्न
Why do we need pure substances?
Advertisements
उत्तर
We need pure substances because of the following reasons:
- A pure substance has a fixed melting and fixed boiling point.
- A pure substance has its characteristic taste, colour, and odour.
- Pure substances can not be broken further into more simple substances by any physical means.
APPEARS IN
संबंधित प्रश्न
Which separation technique will you apply for the separation of the following?
Tea leaves from tea.
What is meant by (i) homogeneous mixtures, and (ii) heterogeneous mixtures ? Give two examples of homogeneous mixtures and two of heterogenous mixtures.
How will you separate common salt, sand and iron filings from their mixture ?
How will you separate a mixture of kerosene oil and water ? Explain with the help of a labelled diagram.
Give reason:
Why do petrol and water form a heterogeneous mixture?
Name the components present in the following mixture:
Duralumin
Give one example of the following type of mixture.
Solid-liquid homogeneous mixture
Tick (√) the correct alternative from the choice given for the following statement:
Example of a homogeneous mixture is
Name the following:
A mixture of two immiscible liquids
Select the correct answer from the choice in the bracket.
A homogenous mixture.
