Advertisements
Advertisements
प्रश्न
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
Advertisements
उत्तर
BRASS is HOMOGENOUS because the mixture is just the same throughout and its constituents cannot be distinguished from each other i.e. composition is the same throughout.
Whereas in Heterogenous mixture of iron and sulphur, the constituents. It can be separated easily by a magnet, the particles can be distinguished from each other and composition is not uniform.
APPEARS IN
संबंधित प्रश्न
Match the columns.
| column A | column B |
|
1. to separate grain from chaff |
a. filtration |
| 2. to saparate sawdust from water | b. sedimentation and deeantation |
| 3. to separate iodine from sodium chloride | c. winnowing |
| 4. to separate iron fillings from sand | d.sublimation |
|
5. it is used to separate sand and water |
e maganetic separation |
|
|
f .handpicking |
Why is it necessary to separate the constituents of a mixture.
State the number of atoms of CaCO3
Give one use of the following substance:
Iron
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
Select the correct answer to the statement given below:
A compound containing carbon, oxygen and calcium.
Select the correct answer from the choice in the bracket.
The least reactive metal.
The first letter of an element is always written in ______ letter.
______ is a mixture of gases.
Complete the table by writing the symbols of the following elements
| Element | Symbol |
| Aluminum | Al |
| Nickel | |
| Bromine | |
| Helium | |
| Magnesium |
