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प्रश्न
Give two examples of the following.
Elements which are liquids
उत्तर
Mercury, Bromine
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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
Indicate whether the following statement is true or false:
All elements are artificially prepared
Tick (√) the correct alternative from the choice given for the following statement.
Gold is used to make jewellery because
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
Complete the statement given below by filling in the blank with the correct word.
Element ______ has the symbol derived from its Latin name ‘Argentum’
Write the names of elements from the following symbol:
Xe
Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
Give an account of elements known to us.
Complete the table by writing the symbols of the following elements
| Element | Symbol |
| Aluminum | Al |
| Nickel | |
| Bromine | |
| Helium | |
| Magnesium |
Reason out
Elements are called semimetals.
