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प्रश्न
Give an example for the elements derived from their Latin names.
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उत्तर
| Element | Latin Name | Symbol |
| Copper | Cuprum | Cu |
| Lead | Plumbum | Pb |
| Potassium | Kalium | K |
| Iron | Ferrum | Fe |
| Mercury | Hydrargyrum | Hg |
| Sodium | Natrium | Na |
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संबंधित प्रश्न
Tick the most appropriate answer.
The constituents of a mixture are present in
- a fixed ratio
- a variable ratio,
- the ratio of 2: 1
- none of these
Give one example for the following types of mixtures :
misicible liquids
Define Elements.
Give two examples of the following.
Non-metals which are solids
Complete the statement given below by filling in the blanks with the correct words.
Atom contains ________ , with positively charged _____.
Select the correct answer from the choice given below.
The element which is malleable
Write the names of elements from the following symbol:
Fe
Match the separation of components in List I with the most appropriate process in List II.
| List I | List II |
| 1. Naphthalene from naphthalene & sodium chloride. | A: Separating funnel |
| 2. Cream from milk. | B: Sublimation |
| 3. Kerosene oil from kerosene oil & water. | C: Boiling |
| 4. Lead nitrate from an aqueous solution of lead nitrate. | D: Centrifugation |
| 5. Ammonia from an aqueous solution of ammonia. | E: Distillation |
Differentiate metals and non-metals.
Assertion: Air is a mixture of elements only.
Reason: Only nitrogen, oxygen and neon gases exist in air.
