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प्रश्न
Select the appropriate option for the following statement:
The element which is noble gas and radioactive in nature.
विकल्प
Boron
Chlorine
Potassium
Platinum
Radon
उत्तर
Radon.
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संबंधित प्रश्न
Which property of copper and aluminium makes them suitable for making electric wires?
Name one metal which is stored in kerosene oil.
Name one property which is characteristic of metals.
Name one property which is characteristic of non-metals.
Name a non-metal having a very high melting point.
Name a non-metal having lustre (shining surface).
Which of the following alloys contains a non-metal as one of the constituents?
(a) brass
(b) amalgam
(c) steel
(d) bronze
Name a non-metal that a good conductor of heat and electricity
Name a non-metal that is used for cancer therapy
Give reasons
Copper is used in making electric cables.
Name the metals present in the following alloys
Bronze
Write ‘true’ or ‘false’ for the following statement
Sodium can be cut with a knife.
`N+—→ N^3-`
Name two metals which react with cold water.
In which of the following industries, microbial enzymes are not used?
a) Glass industry.
b) Cheese industry
c) Tanning industry.
d) Paper industry.
Identify the odd term.
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.
Give reason for the following:
Rusting reduces the structural strength of iron.
The sound of one metal colliding with another makes a noise, this property is called as _______.
A non-metal A is an important constituent of our food and forms two oxides B and C. Oxide B is toxic whereas C causes global warming
- Identify A, B and C
- To which Group of Periodic Table does A belong?
