HARD
6th CBSE
IMPORTANT
Earn 100

Sort the following into homogeneous and heterogeneous mixture:
Cereal in milk, blood, salt and water, air, smog, rain, soil, orange juice, sand and water, lemonade, fruit salad, cookies and carbonated water.
What fraction of the total is the homogenous mixture and the heterogeneous mixture? Find the ratio of homogeneous mixture to the heterogeneous mixture. 

Important Questions on Separation of Substances

HARD
6th CBSE
IMPORTANT
Why can the processes of sedimentation and decantation not be used to clean water and make it safe for drinking?
HARD
6th CBSE
IMPORTANT

Two glass beakers (A and B) were taken and filled them with equal quantity of water. Now added a teaspoon full of salt in beaker A. Kept on adding one teaspoon of salt at a time. Recorded the number of teaspoons of salt that dissolved in beaker A. Now repeated the activity by adding teaspoon full of sugar in beaker B. Again recorded the number of teaspoons of full of sugar that was dissolved in beaker B.

Does the same quantity of water dissolve same amount of sugar and salt?

HARD
6th CBSE
IMPORTANT
Solubility of gases decreases with increase in temperature. Then how do you think these carbonated drinks are prepared?
MEDIUM
6th CBSE
IMPORTANT
In _____ method of separation, insoluble solid particles from a mixture of water are allowed to settle down.
EASY
6th CBSE
IMPORTANT
_____ is the process in which a filter paper is used to separate an insoluble solid from a liquid.
EASY
6th CBSE
IMPORTANT
_____ is the process of obtaining a pure liquid from a mixture.
EASY
6th CBSE
IMPORTANT
Water is known as a universal _____, as it can dissolve so many substances in it.
MEDIUM
6th CBSE
IMPORTANT
Most substances around us exist as: