Evolution of gas


 
 
Concept Explanation
 

Evolution of gas

Evolution of gas:

Some of the chemical reactions occur with the evolution of a gas or a mixture of gases. For example,

  • Metals like zinc, magnesium, iron etc react with dilute hydrochloric acid with the evolution of hydrogen gas. The chemical reaction between zinc and dilute sulphuric acid is characterized by the evolution of hydrogen gas. Take some zinc granules in a conical flask. Add dilute sulphuric acid over zinc granules. We will see the bubbles of hydrogen gas being formed around zinc granules. If we touch the conical flask with our hand, we will find that it is somewhat hot. So, a change in temperature also occurs in this c
  • .... (More Text Available, Login?)
    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    When lead nitrate is heated, it gets decomposed to give a solid residue of lead monoxide with the evolution of ____________________ gases.

    Right Option : D
    View Explanation
    Explanation
    Question : 2

    Which of the following are correct :

    (a) The chemical reaction between zinc and dilute sulphuric acid is characterized by the evolution of hydrogen gas.

    (b) Metals like zinc, magnesium, iron etc react with dilute hydrochloric acid with the evolution of carbon dioxide gas.

    (c) When lead nitrate is heated, it gets decomposed to give a solid residue of lead monoxide with the evolution of nitrogen dioxide and oxygen gases.

     

    Right Option : C
    View Explanation
    Explanation
    Question : 3

    Which of the following are correct :

    (a) Some of the chemical reactions occur with the evolution of a gas or a mixture of gases.

    (b) Metals like zinc, magnesium, iron etc react with dilute hydrochloric acid with the evolution of hydrogen gas.

    (c) The chemical reaction between zinc and dilute sulphuric acid is characterized by the evolution of oxygen gas.

    Right Option : A
    View Explanation
    Explanation
     
    Video Link - Have a look !!!
     
    Language - English
     
     
     
    Related Videos
    Language - English
    Language - English
    Language - English

    Language - English
    Language - English
    Language - English

    Language - English
    Language - English

    Language - English
    Language - English

    Language - English

    Language - English



    Students / Parents Reviews [10]