Physical and Ch...

One of most common solvent used for crystallization is:

Insoluble impurities from solution during crystallization are removed by :

Large crystals of pure substances can be formed from their solutions during ____________.

Which of the following is/are true when milk changes into curd?
(i) Its state is changed from liquid to semi-solid.
(ii) It changes colour.
(iii) It changes taste.
(iv) The change cannot be reversed.

Changes in which only ____________ properties of a substance change are called physical changes.

Chemical changes are:

Anaerobic bacteria digest animal waste and produce biogas(Process-A). The biogas is then burnt as fuel(Process-B). The following statements pertain to these changes. Choose the correct one.

Brown colour formation in an exposed apple after it's cut is:

The process of obtaining salt by evaporation of seawater is known as :

Conversion of milk into curd is :