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प्रश्न
Classify the following as metals, non-metals and metalloids.
Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper
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उत्तर
| 1. | Sodium | Metal |
| 2. | Bismuth | Metal |
| 3. | Silver | Metal |
| 4. | Nitrogen | Non-metal |
| 5. | Silicon | Metalloid |
| 6. | Carbon | Non-metal |
| 7. | Chlorine | Non-metal |
| 8. | Iron | metal |
| 9. | Copper | Metal |
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संबंधित प्रश्न
Classify the following substances into compounds and mixtures:
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
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 |
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Tick (√) the correct alternative from the choice given for the following statement
A non-metal which is a good conductor of electricity.
Write the names of elements from the following symbol:
Zn
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
Select the correct answer from A, B, C, D & E for the statement given below :
A metalloid.
Name the element which is used in toothpaste to strengthen our teeth.
