English

What are amphoteric oxides? - Science

Advertisements
Advertisements

Question

What are amphoteric oxides?

Short Note

Solution

Metals combine with oxygen to form basic oxides. Aluminium oxide and zinc oxide show the properties of both basic and acidic oxides. These oxides are known as amphoteric oxides.

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Metallugy - Solve the following Questions

APPEARS IN

SCERT Maharashtra Science and Technology 1 [English] 10 Standard SSC
Chapter 8 Metallugy
Solve the following Questions | Q 12. 1
Lakhmir Singh Chemistry (Science) [English] Class 10
Chapter 3 Metals and Non-metals
Exercise 1 | Q 39.1 (i) | Page 133
NCERT Science [English] Class 10
Chapter 3 Metals and Non-metals
Exercises | Q 6. 1 | Page 56

RELATED QUESTIONS

Give two examples of amphoteric oxides.


Name two metals which will displace hydrogen from dilute acids, and two metals which will not.


Give reason:

Sodium, potassium and lithium are stored under oil.


Diamond : electric insulator : : _______ : electric conductor


Example of an amphoteric oxide is:


Which of the following metals liberate hydrogen with 5% HNO3?

(i) Cu

(ii) Zn

(iii) Mn

(iv) Mg


Which one of the following metals does not react with cold as well as hot water?


Generally, metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?


Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?


Silver articles become black on prolonged exposure to air. This is due to the formation of


If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of


When a metal X is treated with cold water, it gives a basic salt Y with molecular formula XOH (Molecular mass = 40) and liberates a gas Z which easily catches fire. Identify X, Y and Z and also write the reaction involved.


Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?


Which of the following reacts with cold water vigorously?


The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution is


Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turning in it?


Material: Copper wire, Iron nail, Beaker or Big test tube.

Chemicals: Ferrous Sulphate and Copper Sulphate Solution.

  1. Which reaction you will study with the help of the above material and solutions? Draw the diagram of the experiment arrangement.
  2. How do you identify that the reaction is carried out?
  3. Which type of reaction did you observe?

Answer the questions based on the figure below:

  1. Which experiment setup is demonstrated in the figure?
  2. What do you conclude after the reactions? Name reaction.

Answer the questions based on the figure below:

  1. Which reaction is shown in the figure?
  2. Which gas is evolved in the reaction?
  3. Give an example of reactants that rapidly show this reaction. Give equations.
  4. Give an example of reactants that do not react rapidly.
  5. In what condition will reactants of (c) part react? Give equation.

Metal oxides generally react with acids, but few oxides of metal also react with bases. Such metallic oxides are:

  1. MgO
  2. ZnO
  3. Al2O3 
  4. Cao

Select the appropriate state symbols of the products given as X and Y in the following chemical equation by choosing the correct option from table given below: 

\[\ce{Zn_{(s)} + H_2SO_{4(l)} ->ZnSO_{4(X)} + H_{2(Y)}}\]


Write a chemical equation showing the ionic products formed on dissolving potassium hydroxide in water.


On adding dilute sulphuric acid to a test tube containing a metal ‘X’, a colourless gas is produced when a burning match stick is brought near it. Which of the following correctly represents the metal ‘X’?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×