Advertisements
Advertisements
प्रश्न
Which of the following is not an emulsion ?
विकल्प
milk
butter
face cream
shaving cream
उत्तर
shaving cream
Shaving cream is not an emulsion but foam.
APPEARS IN
संबंधित प्रश्न
The molecules can move freely anywhere in
Define the following term of Matter .
How would you confirm that a colourless liquid given to your is pure water ?
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
Choose the correct answer.
A 15% alcohol solution means :
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
Explain what happens when a beam of light is passed through a colloidal solution.
One of the following is a solid foam. This one is :
Name the property of one of the constituents which can be used to separate a mixture of salt and iodine
Name the process which can be used to recover salt from an aqueous salt solution.
How will you separate a mixture of common salt, sulphur powder and sand ?
Explain how, impure copper sulphate can be purified by crystallisation.
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.
- What could P, Q, R and S be ?
- How would you separate a mixture containing P, Q, R and S ?
Write a few lines on the blackboard with a chalk. Now observe the chalk. What changes do you see in the chalk?
______ is not made of matter.
Diffentiate between absorption and adsorption.
______ is a smallest particle.
Atoms or groups of atoms having a charge are called ______.
Define the term matter.
