Advertisements
Advertisements
प्रश्न
Write the molecular formulae of the following compound.
Sodium aluminate
Advertisements
उत्तर
Sodium aluminate- NaAlO2
APPEARS IN
संबंधित प्रश्न
In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.
Name the gas in air which tarnishes silver articles slowly.
Why are the metals like Na, K, Ca and Mg never found in their free state in nature?
How are the less reactive metals (which are quite low in the reactivity series) extracted? Explain with the help of an example.
Define the term ore.
Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?
Name two metals which are found in nature mainly in the free state (as metallic elements).
How is copper extracted from its sulphide ore (copper glance), Cu2S? Explain with equations of the reactions involved.
The major ore of aluminium is known as ______.
A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.
- Name the metal and write its chemical symbol.
- Write the name and formula of the sulphide ore.
- Give the equations of chemical reactions involved in the production of metal from its sulphide ore.
- Name a common device in which this metal is used.
- Can this metal displace copper from copper sulphate solution? Why?
Distinguish between ‘roasting’ and ‘calcination’. Which of these two is used for sulphide ores and why?
Which one of the following is not true of metal :
Metals form non-polar covalent compounds
Extraction of moderately reactive elements is done by _______ and _______ method.
In Electrolytic reduction of alumina, Anode : _______ : : Cathode : Graphite lining
Find the odd one out and give its explanation.
Explain the following reaction with the balanced equation.
Sodium aluminate reacts with water
Explain concept with example/explain with the help of a balanced equation.
Roasting
Which of the following ore is concentrated by the Froth floatation process?
Which of the following metals exist in their native state in nature?
- Cu
- Au
- Zn
- Ag
- Given below are the steps for extraction of copper from its ore. Write the reaction involved.
- Roasting of copper (I) sulphide
- Reduction of copper (I) oxide with copper (I) sulphide.
- Electrolytic refining
- Draw a neat and well labelled diagram for electrolytic refining of copper
