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प्रश्न
Find the odd one out and give its explanation.
विकल्प
Na
K
Cu
Li
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उत्तर
Cu
Explanation-
Copper (Cu) is a less reactive metal while others are highly reactive metals.
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संबंधित प्रश्न
Name the following:
The property possessed by metals by which they can be beaten into sheets.
In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
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Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?
An ore of manganese metal is ______.
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Give the principles of the hydrolytic method.
Give reasons, why aluminum is used in:
In aluminiothermy
Define the following term.
Mineral
Answer the following questions based on the extraction of aluminium from alumina by Hall - Heroult’s Process :
What is the function of cryolite used along with alumina as the electrolyte?
Complete the incomplete statement with missing word:
Metals form positive ions while non- metals ______.
Name the methods by which concentrated ore is converted to metallic oxide.
Usually ______ ores are subjected to ______ which is done in the absence of air.
How is the method of extraction of metals high up in the reactivity series different from that for metals in the middle? Why can the same process not be applied for them? Name the process used for the extraction of these metals.
Mercury, silver, gold are highly reactive metals.
Identify who I am!
Ore of Aluminum- ______
Explain in brief types of extraction of moderately reactive metals according to their reactivity.
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Identify the substance oxidised and reduced in the above reaction.
