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प्रश्न
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is required for combustion.
एक शब्द/वाक्यांश उत्तर
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उत्तर
Oxygen
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संबंधित प्रश्न
Name: a Metal Which is a Poor Conductor of Electricity.
Name: a Non-metal Which is a Good Conductor of Electricity.
Give two examples of Metalloids.
Give two examples of the following.
Metals which are soft
Give two examples of the following.
Inert gases
Give the name of the radical - SO4
With reference to elements – define the term ‘molecule’. Give two examples each of a monoatomic, diatomic & polyatomic molecule.
State five different characteristics of compounds.
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
Complete the table:
| Element | Latin Name | Symbol |
| Mercury | ______ | Hg |
| Lead | Plumbum | ______ |
| Iron | ______ | Fe |
| Potassium | Kalium | ______ |
