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प्रश्न
Name two metals which are always found in combined state.
उत्तर
Sodium (Na) and magnesium (Mg) are always found in combined state. This is because they are highly reactive and their oxides are highly stable.
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संबंधित प्रश्न
Name one metal which is extracted by reduction with carbon.
Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?
Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula.
Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.
The two metals which are extracted by means of electrolytic reduction of their molten salts are:
(a) magnesium and manganese
(b) iron and aluminium
(c) zinc and magnesium
(d) magnesium and aluminium
A black metal oxide XO2 is used as a catalyst in the preparation of oxygen gas from potassium chlorate. The oxide XO2 is also used in ordinary dry cells. The metal oxide XO2 cannot be reduced satisfactorily with carbon to form metal X.
(a) Name the metal X.
(b) Name the metal oxide XO2.
(c) Which reducing agent can be used to reduce XO2 to obtain metal X?
(d) Name another metal which can also be extracted by the reduction of its oxide with the above reducing agent.
Name the following:
A steel grey coloured solid non-metal.
In Electrolytic reduction of alumina, Anode : _______ : : Cathode : Graphite lining
Find the odd one out and give its explanation.
The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the ____________.
