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प्रश्न
Write the names of elements from the following symbol:
Ti
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उत्तर
Ti- Titanium
संबंधित प्रश्न
Give two examples for the following: Metals
Tick the most appropriate answer
Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
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 |
Define: Formula
Indicate whether the following statement is true or false:
Molecules can exist independently.
Tick (√) the correct alternative from the choice given for the following statement.
Gold is used to make jewellery because
Tick (√) the correct alternative from the choice given for the following statement.
Sand is a compound of
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
Select the correct answer to the statement given below:
A compound containing carbon, oxygen and calcium.
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
