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प्रश्न
Select the correct answer from the choice given below.
An element which is a poor conductor of heat
पर्याय
copper
carbon
aluminum
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उत्तर
carbon
संबंधित प्रश्न
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
Name: a Metal Which is brittle
Give two applications of chromatography.
Give two examples of the following.
Metals which are soft
Select the correct answer from the choice given below.
An impure substance
Write the names of elements from the following symbol:
Cd
Explain the difference between Metals and non-metals.
With reference to elements – define the term ‘molecule’. Give two examples each of a monoatomic, diatomic & polyatomic molecule.
Define the term ‘compound’. In the compound carbon dioxide – the elements carbon & oxygen are combined in a fixed ratio. Explain.
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 |
