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Question
Complete the statement given below by filling in the blank with the correct word.
The basic unit of an element is an __________.
Solution
The basic unit of an element is an atom.
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A solvent of Iodine is
Give one use of the following substance:
Brass
Indicate whether the following statement is true or false:
Metals can be polished.
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 the names of elements from the following symbol:
Br
Write the names of elements from the following symbol:
Si
Write the names of elements from the following symbol:
Ir
Select the correct answer to the statement given below:
A metalloid
Give an example of two liquids that form heterogeneous – mixtures.
Select the correct answer from the choice given below to complete the sentence :
Compounds are ____________ in nature.
