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What Special Name is Given to Substances like Aluminium Oxide. - Science

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प्रश्न

What special name is given to substances like aluminium oxide.

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उत्तर

Aluminium oxide reacts with both acids and bases and so it is called an amphoteric oxide.

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अध्याय 3: Metals and Non-metals - Exercise 1 [पृष्ठ १३४]

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लखमीर सिंग Chemistry (Science) [English] Class 10
अध्याय 3 Metals and Non-metals
Exercise 1 | Q 56.2 | पृष्ठ १३४

संबंधित प्रश्न

.................... liberated when acetic acid reacts with sodium metal.
(a) Hydrogen
(b) Chlorine
(c) Oxygen
(d) Nitrogen


Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium


Differentiate between metal and non-metal on the basis of their chemical properties.


A solution of _________________ in water is green in colour.

(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3


Fill in the following blank with suitable word:

 Magnesium liberates ............... gas on reacting with hot boiling water.


Which of the following elements would yield a basic oxide.

Na, S, C, K, H


What is the nature of the oxide Na2O? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.


What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.


How do metals react with hydrogen? Explain with an example.


Describe the reaction of potassium with water. Write the equation of the reaction involved.


Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.


What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with eater.


A metal less reactive and another metal more reactive than hydrogen are:
(a) aluminium and lead
(b) iron and magnesium
(c) copper and tin
(d) copper and mercury


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


In nature, metal A is found in a free state while metal B is found in the form of its compounds. Which of these two will be nearer to the top of the activity series of metals?


Write the chemical equation of the above process.


Write the chemical equation for the following reaction:
Manganese dioxide is heated with aluminum powder.


Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

(i) Good thermal conductivity

(ii) Good electrical conductivity

(iii) Ductility

(iv) High melting point


Why is acidified water considered to be a good conductor of electricity?


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