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प्रश्न
Complete and balance the following equation:
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उत्तर
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संबंधित प्रश्न
‘E’ is an element which reacts with oxygen to form an oxide E2O. An aqueous solution of E2O turns red litmus blue, so:
i. What is the nature of oxide E2O ?
ii. Write the name of element ‘E’.
What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.
Write the electron-dot structures for sodium, oxygen and magnesium.
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Complete and balance the following equation:
Na + O2 →
Complete and balance the following equation:
Na2O + H2O →
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
Why does aluminium not react with water under ordinary conditions?
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Write the equation for the reaction of Aluminium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Write the equation for the reaction of Iron with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
The least reactive metal among the following is:
(a) sodium
(b) silver
(c) copper
(d) lead
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
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
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
Why is acidified water considered to be a good conductor of electricity?
