Advertisements
Advertisements
प्रश्न
On the basis of composition of matter, milk is considered to be :
पर्याय
a pure substance
an impure substance
an element
a compound
Advertisements
उत्तर
an impure substance
Milk is considered to be an impure substance as it is an emulsion. Emulsion is a colloid in which minute droplets of one liquid are dispersed in another liquid, which is not miscible with it.
APPEARS IN
संबंधित प्रश्न
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
Explain why steel is used to make railway lines.
Which type of elements, metals or non-metals, show the property of brittleness ?
What are pure substances ? Give two examples of pure substances.
Name a metal which forms amalgams.
Out of a colloid, solution and a suspension :
which one has the largest particles ?
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Write a method to separate a mixture of sand and potash alum.
How will you separate water from mustard oil ?
How can you obtain pure water from a salt-water mixture (or salt-solution) ? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from a salt-water mixture (or salt-solution).
Explain how, nitrogen , oxygen and argon gases are separated from air.
The dyes present in fountain pen ink can be separated by the technique of :
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
One of the following does not undergo sublimation. This one is :
Explain the meaning of the term matter with special reference to the term ‘substance’.
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
The movement of particles in liquids is ______.
Compressibility of solids: ______.
