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प्रश्न
Observe the given figure of reactivity series of metals and answer the following questions:
Reactivity series of metals
- Name two metals which react with water.
- Name two moderately reactive metals.
- Name the most highly reactive metal and the most less reactive metal.
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उत्तर
- Two metals that react with water: Potassium, sodium
- Two moderately reactive metals: Zinc, iron
- 1. Most highly reactive metal: Potassium
2. Most less reactive metal: Gold
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संबंधित प्रश्न
In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
Write the composition of the alloy called bronze.
How is zinc extracted from its carbonate or (calamine)? Explain with equations.
Name the gas produced when calamine ore is calcined.
Name the electrode at which aluminium metal is produced.
Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?
Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved.
An ore of manganese metal is:
(a) bauxite
(b) haematite
(c) cuprite
(d) pyrolusite
The metal which can be extracted from the bauxite ore is:
(a) Na
(b) Mn
(c) Al
(d) Hg
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
Give reasons, why aluminum is used in:
In aluminiothermy
Name the following:
The process in which an ore is heated in air so that oxygen gets added to it to form the oxides.
What is galvanized iron.
Write equations for each of the above metal which reacts with water.
Arrange the metals of copper, iron, magnesium, sodium and zinc in the decreasing order of reactivity.
What is the difference between calcination and roasting?
Explain the following reaction with the balanced equation.
Zinc sulphide is heated strongly in excess of air
The poorest conductor of heat among metals is ____________.
Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper, etc. are reduced by using:
