Advertisements
Advertisements
Question
Name the technique that you use if only the solid component of a solution is required.
Advertisements
Solution
Evaporation.
APPEARS IN
RELATED QUESTIONS
Define: Elements
Classify the following substances into compounds and mixtures:
Tick the most appropriate answer
Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
Fill in the blank
Chalk powder dissolved in water is an example of a Chalk powder dissolved in water is an example of a _________.
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 |
Name the substance you will add to speed up sedimentation.
What is the difference between a pure substance and a mixture ?
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Sand
Define Elements.
Name: Three different forms of carbon
Fill in the blank
A metal which is a liquid at room temperature is _______.
Tick (√) the correct alternative from the choice given for the following statement.
Sulphur and carbon are
Tick (√) the correct alternative from the choice given for the following statement.
The most abundant elements in the universe are
Complete the statement – an element is a pure substance made up of ____________ atoms.
Write the names of elements from the following symbol:
Br
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
Differentiate metals and non-metals.
Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
Name the process associated with the following
A fine beam of light entering through a small hole in a dark room illuminates the particles in its paths.
Elements contain the ______of the same kind.
