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प्रश्न
Select the correct answer from the choice given below to complete the sentence :
Compounds are ____________ in nature.
विकल्प
homogenous or heterogenous
always homogenous
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उत्तर
Compounds are always homogenous in nature.
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संबंधित प्रश्न
What is the difference between a pure substance and a mixture ?
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Iron
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The most abundant element in the earth’s crust is _______.
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elements, compounds & mixtures.
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Name – a gas with a pungent, choking odour which is lighter than air
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 |
Give three differences between elements & compounds with relevant examples.
Give an example of two liquids that form heterogeneous mixtures.
Complete the table:
| Element | Latin Name | Symbol |
| Mercury | ______ | Hg |
| Lead | Plumbum | ______ |
| Iron | ______ | Fe |
| Potassium | Kalium | ______ |
