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प्रश्न
Fill in the following blank with suitable word:
The white powder formed when magnesium ribbon burns in oxygen is of ....................
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उत्तर
The white powder formed when a magnesium ribbon burns in oxygen is magnesium oxide.
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संबंधित प्रश्न
What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.
Name two metals which form amphoteric oxides.
Name the metal which has been placed at the top of the reactivity series.
Which of the following elements would yield an acidic oxide.
Na, S, C, K, H
Which of the following elements would yield a neutral oxide?
Na, S, C, K, H
How do non-metals react with hydrogen? Explain with an example.
What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place
Why does aluminium not react with water under ordinary conditions?
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
Name another metal oxide which behaves like aluminium oxide.
One of the following is not a neutral oxide. This is:
(a) CO
(b) H2O
(c) N2O
(d) Na2O
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
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.
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Write the chemical equation for the following reaction:
Cinnabar is heated in the presence of air.
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
