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प्रश्न
An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?
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उत्तर
It is metal. The element is expected to be a lustrous, malleable and good conductor of heat and electricity.
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संबंधित प्रश्न
Give one example for the following types of mixtures :
misicible liquids
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Marble
How is sodium chloride different from its constituent elements, sodium and chlorine in its properties? Justify.
Give reason: Graphite is used to make a lead of the pencils.
Find the atomicity of the Following molecule:
Calcium Chloride
Fill in the blank
A liquid non-metal is _______.
Complete the statement – an element is a pure substance made up of ____________ atoms.
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 |
Who are my companions?
| Group 'A' | Group 'B' |
| 1. Stainless steel | (a) Non-metal |
| 2. Silver | (b) compound |
| 3. Bhajani mixture for milling | (c) Mixture |
| 4. Salt | (d) Element |
| 5. Coal | (e) Alloy |
| 6. Hydrogen | (f) Metal |
Why are utensils made up of aluminium and brass?
