Is Matter Aroun...

The copper sulphate solution during crystallization is filtered to:   

Arrange the following steps in the crystallisation of copper sulphate.
A. Dissolve it in a minimum amount of water.
B. Take some (approximately 5 g) impure sample of copper sulphate in a china dish.
C. Cover the solution with filter paper and leave it undisturbed at room temperature to cool slowly for a day.
D. Evaporate water from the copper sulphate solution so as to get a saturated solution.
E. Filter the impurities out.

The colloidal solutions of gold prepared by different methods have different colours. This is due to:

What do you call a mixture where two substances are mixed in uniform composition?

The suitable method is to separate the following components of the mixtures.

Which of the following is made up of atoms of two different elements?

If a chemical is given to you, how would you know that it is pure?

Petrol and water can be separated by ............ because................

Mixture of $$MgCO_{3}$$ & $$NaHCO_{3}$$ on strong heating gives $$CO_{2}$$ & $$H_{2}O$$ in $$3 : 1$$ mole ratio. The weight $$\%$$ of $$NaHCO_{3}$$ present in the mixture is :

A mixture of mustard oil and water forms