Advertisements
Advertisements
प्रश्न
One of the following is a solid foam. This one is :
विकल्प
butter
bread
shaving cream
ruby
Advertisements
उत्तर
bread
Solid foam is a colloid in which a gas is dispersed in a solid medium. Bread is an example of solid foam.
APPEARS IN
संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
Name two processes which provide the best evidence for the motion of particles in matter.
Fill in the following blank with suitable words :
The best evidence that the particles of matter are constantly moving comes from the studies of ................. and ...................
Name the scientist who studied the movement of pollen grains suspended in water through a microscope. What is this phenomenon known as?
Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
Which of the following are not compounds ?
Chlorine gas, Potassium chloride, Iron powder, Iron sulphide, Aluminium foil, Iodine vapour, Graphite, Carbon monoxide, Sulphur powder, Diamond
What are (i) metals (ii) non-metals, and (iii) metalloids ? Give two examples each of metals, non-metals and metalloids.
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
Define solute.
Define solvent.
Name the different types of solutions. Give one example of each.
Define the emulsion. Give one example.
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
How will you separate camphor, common salt and iron nails from their mixture ?
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
The boiling point of liquid argon is :
______ is a smallest particle.
Examples of foam are ______.
Define the term matter.
