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प्रश्न
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
पर्याय
Gunpowder
Iodine
Boron
Helium
Bromine
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उत्तर
A non-metal that is lustrous: Iodine
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संबंधित प्रश्न
Give one example for the following type of mixtures
solid-solid homogenous mixture.
What are the advantages of chromatography?
Define: Formula
Fill in the blank
A liquid non-metal is _______.
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
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 |
Classify the substances given in Fig. 2.2 into elements and compounds
Name the two elements which are derived from the country.
