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प्रश्न
Name a gaseous non-metal,. having greenish yellow colour.
उत्तर
Chlorine.
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संबंधित प्रश्न
Give an example of a metal which is a liquid at room temperature.
Which of the following can be beaten into thin sheets?
Choose the acidic oxides, basic oxides and neutral oxides from the following:
Na2O; CO2; CO; SO2; MgO; N2O; H2O.
Name two metals whose melting points are so low that they melt when held in the hand.
"Is malleable and ductile". This best describes:
(a) a metal
(b) a compound
(c) a non-metal
(d) a solution
The electronic configurations of four particles A, B, C and D given below:
| A | 2, 8, 8 |
| B | 2, 8, 2 |
| C | 2, 6 |
| D | 2, 8 |
Which electronic configuration represents:
(i) magnesium atom?
(ii) oxygen atom?
(iii) sodium ion
(iv) chloride ion?
Name a metal that is most malleable
Give reasons
Tungsten is used in electric bulbs.
State any five physical properties of a metal.
Physical properties of a metal :
Name one metal which is a liquid at room temperature
What do you understand by the term non-metal?
Name the non-metal and its natural form, which is the hardest substance.
What is an alloy?
Name the three classes in which elements are classified. Which was the first metal used by man?
Name:
a metal with low melting and boiling points
Name:
a non- metal used in alloys
Select from the following ist:
`Fe_2O_3, , NO, PbO, Mn_2O_7`
Acidic oxide ………………
Identify the odd term.
Identify the odd term.
Which non-metal is essential for our life and all living beings?
