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प्रश्न
Name the following:
Name two metals always find in combined state.
उत्तर
sodium and potassium
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संबंधित प्रश्न
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
A zinc ore gave CO2 on treatment with a dilute acid. Identify the ore and write its chemical formula.
Why are the metals like Na, K, Ca and Mg never found in their free state in nature?
Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula.
Name two ores of zinc. Write the names of the chemical compounds present in them and give their chemical formulae.
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
Aluminum is used in thermite welding:
what is ignition mixture?
State the property of the metal being utilized in the following :
| Use of metal | Property |
| Zinc in Galvanization | |
| Aluminium in Thermite welding |
choose the most appropriate term to match the given description.
Heating of the ore in the absence of air to high temperature
Define calcination.
