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प्रश्न
Complete the statement with the correct words.
__________ are chemicals formed on reaction of a base with an _____ giving salt and water.
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उत्तर
Salts are chemicals formed on reaction of a base with an acid giving salt and water.
संबंधित प्रश्न
Give Two Examples for Each of the Following: Inert Gases
Name: a Liquid Metal
Give two examples of the following.
Non-metals which are solids
Fill in the blank
A liquid non-metal is _______.
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as 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 |
Write an answer to the following question in your own words.
Which elements (metals and non-metals), compounds and mixtures do we use in our day-to-day life?
Select the correct answer from the choice in the bracket.
The least reactive metal.
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
