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प्रश्न
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
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उत्तर
The reactivity series of metals as: K > Na > Ca > Mg > Al > C > Zn > Fe > Sn > Pb
As aluminium is more reactive than iron so it is placed above iron in the reactivity series.
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संबंधित प्रश्न
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write equation for the reaction of sodium with oxygen.
What is the action of water on magnesium ? Write equation of the chemical reaction involved.
The metals which can produce amphoteric oxides are:
(a) sodium and aluminium
(b) zinc and potassium
(c) calcium and sodium
(d) aluminium and zinc
An element is soft and can be cut with a knife. If is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
(a) Mg
(b) S
(c) P
(d) Na
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
(a) What is the nature of the oxide E2O?
(b) State whether element E is a metal or a non-metal.
(c) Give one example of an element like E.
Choose the correct alternative and rewrite the following:
Which of the following is lue in colour?
An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following.
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
- Good thermal conductivity
- Good electrical conductivity
- Ductility
- High melting point
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
