Advertisements
Advertisements
प्रश्न
State whether the following statement is true or false :
Sponge is an example of solid sol.
उत्तर
False. Sponge is an example of solid foam.
APPEARS IN
संबंधित प्रश्न
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
The inter-molecular space is maximum in
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Fill in the blank
Liquids have a definite ______
Name two processes which provide the best evidence for the motion of particles in matter.
Out of solids, liquids and gases, which one has :
- maximum movement of particles ?
- maximum interparticle attractions ?
- minimum spaces between particles ?
Name a non-metal which is a good conductor of electricity.
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
What elements do the following compounds contain ?
Sugar, Common salt
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
How much water should be added to 15 grams of salt to obtain 15 per cent salt solution ?
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
Name the process which is used in milk dairies to separate cream from milk.
What is the general name of the process by which tea-leaves are separated from prepared tea ?
Name the process by which common salt is obtained from sea-water.
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
Which among the following ______ will get attracted to by magnet?
The movement of particles in liquids is ______.
Higher the temperature, the higher the kinetic energy of particles.
