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प्रश्न
Select the correct answer from A, B, C, D & E for the statement given below :
A metalloid.
पर्याय
Gunpowder
Iodine
Boron
Helium
Bromine
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उत्तर
A metalloid: Boron
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संबंधित प्रश्न
Tick the most appropriate answer
Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
Give two examples of the following.
Elements which are liquids
Indicate whether the following statement is true or false:
Ozone is a triatomic molecule
Tick (√) the correct alternative from the choice given for the following statement
A gaseous non-metal.
Match the statements in List I – 1 to 10 correct answers in List II-A to J.
| List I | LIst II | ||
| 1 | Fluorine and chlorine | A | Nitrogen |
| 2 | A diatomic molecule | B | Boron |
| 3 | A molecule containing the elements hydrogen and oxygen. | C | Reactants |
| 4 | A metalloid - showing properties of both metals and non-metals. | D | Chemical Formula |
| 5 | The term used for the substances which take part in the chemical reaction | E | Halogens |
| 6 | The term represents a substance by means of symbols. | F | Water |
| 7 | The term used for the substances formed as a result of a chemical reaction | G | Nitric Acid |
| 8 | A compound containing one atom of zinc and two atoms of chlorine. | H | Products |
| 9 | The chemical name for nitrogen monoxide. | I | Phosphorus |
| 10 | A polyatomic molecule. | J | Zinc Chloride |
Explain the difference between Atoms and molecules.
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
Elements are made up of______ kinds of atoms.
Name the process associated with the following
A fine beam of light entering through a small hole in a dark room illuminates the particles in its paths.
Reason out
Elements are called semimetals.
