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प्रश्न
Name: a Metal Which is brittle
उत्तर
Zinc
APPEARS IN
संबंधित प्रश्न
Tick the most appropriate answer.
The constituents of a mixture are present in
- a fixed ratio
- a variable ratio,
- the ratio of 2: 1
- none of these
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
Name: a Liquid Metal
Give one use of the following substance:
Brass
Answer the following question:
Give the advantages of using symbols instead of names of elements or compounds.
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
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?
Give an example of each mixture having the following characteristics. Suggest a suitable method to separate the components of this mixture
Two or more coloured constituents are soluble in some solvent.
