Advertisements
Advertisements
प्रश्न
Name the terms for the particles of matter which may or may not have independent existence.
उत्तर
this criteria is shown by atoms of any matter which may exist alone (like helium) or may not exist alone and exist in molecular form (like oxygen/o₂ )
APPEARS IN
संबंधित प्रश्न
Fill in the blank :
The substances which can flow are called ________
Honey is more viscous than water. Can you suggest why?
Name the property which enables metals to be drawn into wires.
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.
What are the three general classes of matter ? Give one example of each type.
The element which is not common between the compounds called baking soda and soda ash is
You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?
Define solubility of a substance. How does it vary with temperature ?
Name the process which can be used to recover salt from an aqueous salt solution.
Name the process which is used in milk dairies to separate cream from milk.
Write a method to separate a mixture of sand and potash alum.
Describe a method to separate a mixture of camphor and sand.
How is the impurity of iron present in several substances removed in industries ?
Define the term matter.
Diffentiate between absorption and adsorption.
Match the physical quantities given in column A to their S I units given in column B:
(A) | (B) | ||
(a) | Pressure | (i) | cubic metre |
(b) | Temperature | (ii) | kilogram |
(c) | Density | (iii) | pascal |
(d) | Mass | (iv) | kelvin |
(e) | Volume | (v) | kilogram per cubic metre |
The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity:
(A) | (B) | ||
(a) | degree celsius | (i) | kilogram |
(b) | centimetre | (ii) | pascal |
(c) | gram per centimetre cube | (iii) | metre |
(d) | bar | (iv) | kelvin |
(e) | milligram | (v) | kilogram per metre cube |
Compressibility of solids: ______.
Gas-solid is ______.