Self Studies
Self Studies
Self Studies
Self Studies

Metals and Non-metals Test - 19

Result Self Studies

Metals and Non-metals Test - 19
  • 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
    1 / -0
    Which of the following products is/are formed when cinnabar is heated in air?
    Solution
    When cinnabar is heated in air, it will give oxide of the mercury which is then decomposed to give pure metal on heating. 
    \(2 HgS +3 O _ 2 \rightarrow 2 HgO +2 SO _2\)
    \(2 Hg O \rightarrow 2 Hg + O _2\)
    Hence, the correct option is (B).
  • Question 2
    1 / -0
    Metals such as sodium, magnesium and calcium are obtained by electrolysis of which of the following compounds of these metals?
    Solution
    Metals such as \(K, Na, Ca, Mg\) and \(Al \) that are highly reactive or at the top of the electrochemical series are extracted from the electrolysis of their fused Compounds (molten Compounds) The molten Compounds are generally chlorides.
    Hence, the correct option is (B).
  • Question 3
    1 / -0
    Ores mined from the earth are usually contaminated with large amount of impurities known as 
    Solution
    Ore contains only a desired substance. It is usually contaminated with earthly or undesired materials that are known as gangue.
    Hence, the correct option is (C).
  • Question 4
    1 / -0
    Which of the following metals has lesser affinity for oxygen than carbon?
    Solution
    Zn has a lesser affinity for oxygen than carbon that is why zinc oxide(ZnO) can be reduced by carbon.
    Hence, the correct option is (B).
  • Question 5
    1 / -0
    In the electrolytic reduction of aluminium, which of the following is taken as an electrolyte?
    Solution
    Aluminium is extracted by the electrolytic reduction method. In which reduction of molten aluminium oxide is done to get alumina
    Hence, the correct option is (C).
  • Question 6
    1 / -0
    After electrolytic refining of a metal, where can we get pure metal in the apparatus?
    Solution
    The clean or pure metal is formed at the cathode when the electrical current of a sufficient voltage is applied by dissolving impure metal at the anode.
    Electrolytic refining: It is a process of refining a metal (mainly copper) by the process of electrolysis. During electrolysis, a large chunk or slab of impure metal is used as the anode with a thin strip of pure metal at the cathode. In this setup, an electrolyte (metal salt aqueous solution) depending on the metal is often used. Pure metal is formed at the cathode when the electrical current of a sufficient voltage is applied by dissolving impure metal at the anode.
    Hence, the correct option is (B).
  • Question 7
    1 / -0
    Which of the following statements is not true? 
    Solution
    An alloy is a combination of metals or metals combined with one or more other elements. It is a homogenous mixture and the physical property of alloy is different from its constituent element .
    Example: Brass is an alloy of copper and zinc.
    Hence, the correct option is (B).
  • Question 8
    1 / -0
    During the electrolytic refining of a metal, cathode is made up of 
    Solution
    During the electrolytic refining of metal, the cathode is made up of a strip of the pure metal.
    Hence, the correct option is (A).
  • Question 9
    1 / -0
    The oxide of which of the following metals can be reduced to the corresponding metal by heating only?
    Solution
    Oxide of Platinum(Pt) can be reduced to metal by heating only. As the oxides of metals which are present at the bottom of the reactivity series can be reduced to metals by the action of heat alone.
    Hence, the correct option is (A).
  • Question 10
    1 / -0
    Which of the following metals is never found in nature as a free element?
    Solution
    Highly reactive metals such as Na, Ca which is found at the top of the activity series are always found in a combined state due to their high reactivity.
    Hence, the correct option is (C).
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