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प्रश्न
Write the molecular formulae of the following compound.
Sodium aluminate
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उत्तर
Sodium aluminate- NaAlO2
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संबंधित प्रश्न
Name the following:
Main ore of aluminium.
What chemical process is used for obtaining a metal from its oxide?
Silver metal does not combine easily with oxygen but silver jewellery tarnishes after some time. How?
Why does a new aluminium vessel lose shine so soon after use?
What is the difference between a mineral and an ore?
Name two ores of zinc. Write the names of the chemical compounds present in them and give their chemical formulae.
Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
The following questions relate to the extraction of aluminium by electrolysis.
Explain why it is necessary to renew the anode periodically.
Name : The metal which is liquid at room temperature.
Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.
Usually ______ ores are subjected to ______ which is done in the absence of air.
Zinc blende is converted to oxide by ______ process.
Iron is _______.
Find the odd one out and give its explanation.
Explain Bayer’s process.
Explain the following reaction with the balanced equation.
Chlorine dissolved in water
Which of the following metals exist in their native state in nature?
- Cu
- Au
- Zn
- Ag
Care must be taken while diluting concentrated nitric acid with water. Why?
Assertion (A): The extraction of metals from their sulphide ores cannot take place without roasting the ore.
Reason (R): Roasting converts sulphide ores directly into metals.
