Self Studies
Self Studies
Self Studies
Self Studies

General Principle of Extraction of Metal Test - 5

Result Self Studies

General Principle of Extraction of Metal Test - 5
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    4 / -1

    Ores like magnetite or tungstates in tin ores are concentrated by ______.

    Solution

    Magnetic Separation:- This method is adopted when either ore or the impurities are magnetic in nature. They are separated from each other by means of magnetic separators.

    Eg: SnO2​ (Non magnetic) in Fe3​O4​ (magnetic)

     

  • Question 2
    4 / -1

    An ore like zinc blende is concentrated by

    Solution

    Froth floatation because it is sulphide ore (ZnS).

     

  • Question 3
    4 / -1

    Roasting is generally done in case of the following

    Solution

    In this process sulphide ores are converted into oxide ores

     

    2ZnS+3O2​ → 2ZnO+2SO2​

     

  • Question 4
    4 / -1

    Heating of pyrites in presence of air to remove sulphur is called _________.

    Solution

    In roasting, the ore is treated with very hot air. This process is generally applied to sulphide minerals. During roasting, the sulfide is converted to an oxide, and sulfur is released as sulfur dioxide, a gas.

     

  • Question 5
    4 / -1

    A substance which reacts with gangue to form fusible material is called:

    Solution

     

  • Question 6
    4 / -1

    The substance which is mixed with the ore for removal of impurities is termed as

    Solution

    Flux is added during smelting it combines with infusible gangue present in the ore to form a fusible mass known as slag. Flux + Gangue → Slag

     

  • Question 7
    4 / -1

    Which one of the following furnaces can produce the highest temperature?

    Solution

    The heat produced in electric furnace is because of electricity and continuous flow of electricity through high resistant metals can make highest temperature. Examples of high resistant metals and alloys are Nichrome, Tungsten etc.

     

  • Question 8
    4 / -1

    In metallurgy , flux is a substance used to convert

    Solution

    In metallurgy , flux is a substance used to convert infusible impurities to fusible material.

     

  • Question 9
    4 / -1

    In the metallurgy of iron, when limestone is added to the blast furnace, the calcium ions end up in:

    Solution

    In the metallurgy of iron, when limestone is added to the blast furnace, the calcium ions end up in slag.

     

    CaCO3​ → CaO+CO2​

    CaO+SiO2 ​→ CaSiO3​ (slag)

     

    Calcium ions end up in slag in form of CaSiO3​

     

  • Question 10
    4 / -1

    The flux used in the extraction of iron is :

    Solution

    In the blast furnace for extraction of iron, the flux added is limestone CaCO3​.

     

Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now