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प्रश्न
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
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उत्तर
Metals are ductile, i.e., they can be drawn or stretched into thin wires.
They are malleable, i.e., they can be beaten into thin sheets.
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संबंधित प्रश्न
Define: Elements
Define:
Atomicity
Give reason: Argon is filled in electric bulbs.
Fill in the blank
A liquid non-metal is _______.
Indicate whether the following statement is true or false:
Elements are made up of compounds
Tick (√) the correct alternative from the choice given for the following statement
A non-metal which is a good conductor of electricity.
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
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 |
Write the names of elements from the following symbol:
Fe
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
