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प्रश्न
Select the appropriate option for the following statement:
The element which shows properties of both metals and non-metals.
पर्याय
Boron
Chlorine
Potassium
Platinum
Radon
उत्तर
Boron.
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संबंधित प्रश्न
Classify the following elements into metals, non–metals and metalloids: C, Mg, Si, S, Hg, As.
Name the gas that is produced in the given case:
The reaction of ethanol and sodium.
Name one metal and one non-metal which exist in liquid state at room temperature.
Name two metals which are used for making electric wires.
Give reasons
Tungsten is used in electric bulbs.
Tick (√) the most appropriate answer.
Sodium amalgam is prepared by dissolving sodium in :
State two important uses of following non-metals
Uses of nitrogen
State two important uses of following non-metal
Uses of oxygen
State two important uses of following non-metal
Uses of graphite
`N+—→ N^3-`
Name:
a non metal which conducts electricity
Name:
two metallic oxides which are amphoteric
Name:
a metal whose oxide is reduced only by carbon
Distinguish between an ore and a metallic compound.
What are the metals that make the alloys brass and bronze?
Give a reason why – properties of metals are related to their activity or reactivity series of metals. Explain the same with reference to potassium and iron in the series.
State whether the statement given below is true or false. If false write the correct statement.
Lead pencils contain lead.
Find the odd one out and give its explanation.
Pencil lead contains
