Advertisements
Advertisements
Question
Why is it necessary to separate the constituents of a mixture.
Advertisements
Solution
Because: The mixtures contain unwanted substances which may be harmful and may degrade the properties of mixtures. So we, need to separated them and extract useful substances.
This is necessary because
(i) It removes unwanted and harmful substances
(ii) to obtain pure and useful substances them.
Example: Sea water is rich in common salt which is an important ingredient of our food to add taste and nutrients. But sea water, cannot be directly used to get the salt.
Hence, it is necessary to separate both.
APPEARS IN
RELATED QUESTIONS
Name: the Hardest Naturally Occurring Substance
Fill in the blank
The most abundant element in the earth’s crust is _______.
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
Complete the statement with the correct words.
__________ are chemicals formed on reaction of a base with an _____ giving salt and water.
Explain the difference between Atoms and molecules.
Select the correct answer from the choice in the bracket.
The least reactive metal.
Why are utensils made up of aluminium and brass?
An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?
______ is the life-giving element is the air.
Classify the substances given in Fig. 2.2 into elements and compounds
