How Much Do You Know About Aluminium Alloy? Quiz

10 Questions | Total Attempts: 113

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How Much Do You Know About Aluminium Alloy? Quiz

Do you know much about metals? Do you know that aluminum is a metal, is a chemical element which has the symbol Al and it is shiny and soft in nature? These are few things about aluminum. How much do you know about aluminum alloy? . Take this quiz and lets find out.


Questions and Answers
  • 1. 
    Which of the following properties does not apply to modern ceramics?
    • A. 

      High melting point

    • B. 

      Application in engineering

    • C. 

      Corrode readily

    • D. 

      Very hard

  • 2. 
    Which of the following statements about aluminium is not true?
    • A. 

      It is extracted by electrolysis.

    • B. 

      Its chloride is covalent.

    • C. 

      It is soluble in concentrated nitric acid

    • D. 

      It is soluble in sodium hydroxide solution

  • 3. 
    Which of the following statements is true of dimer Al2Cl6?
    • A. 

      It is an ionic compound.

    • B. 

      Aluminium atom undergoes sp2 hybridisation.

    • C. 

      It is a white solid which melts when heated.

    • D. 

      There are two coordinate covalent bonds in the molecule.

  • 4. 
      When sodium sulphide is added to an aqueous solution of aluminium chloride, the gas evolved is
    • A. 

      Cl2

    • B. 

      CO2

    • C. 

      H2S

    • D. 

      HCl

  • 5. 
     Why is the aqueous solution of an aluminium salt acidic?
    • A. 

      [Al(H2O)6]3+ ion receives a proton in aqueous solution.

    • B. 

      [Al(H2O)6]3+ ion donates a proton in aqueous solution.

    • C. 

      [Al(H2O)6]3+ ion disproportionate and produces H+ (aq) ions.

    • D. 

      Acidic [Al(H2O)6OH]2+ ions are produced in solution.

  • 6. 
    Which statement is not true concerning the aluminium ion, Al3+?
    • A. 

      The Al3+ ion has a high charge density and developes covalent character in its ionic compounds

    • B. 

      In water, the Al3+ ions exist as a complex ion [Al(H2O)6]3+.

    • C. 

      An aqueous solution of Al3+ ions has a pH = 7.

    • D. 

      If hydroxide ions are added to a solution of an aluminium salt, a white precipitate is formed.

  • 7. 
     Which equation represents the reaction between aqueous aluminium and potassium hydroxide?    
    • A. 

      Al (s) + 4OH- (aq) → [Al(OH)4]- (aq)

    • B. 

      Al (s) + 6OH- (aq) → [Al(OH)6]3- (aq)

    • C. 

      Al (s) + 4H2O (l) → [Al(H2O)4]- (aq)

    • D. 

      Al (s) + 3H2O (l) + OH- (aq) → [Al(OH)4]- (aq) + 3/2 H2 (g)

  • 8. 
      A piece of aluminium foil is treated with aqueous mercury(II) chloride to expose a clean surface of the metal. The foil is rinsed and left to stand in water. Bubbles of gas are given off. The final products include  
    • A. 

      Aluminium oxide and hydrogen

    • B. 

      Aluminium chloride and hydrogen

    • C. 

      Aluminium hydroxide and hydrogen

    • D. 

      Aluminium hydroxide and oxygen

  • 9. 
    Aluminium sulphate solution contains aqueous aluminium ions. What is the shape of the Al3+   ions?     
    • A. 

      Tetrahedron

    • B. 

      Octahedron

    • C. 

      Square planar

    • D. 

      Trigonal planar

  • 10. 
      Which of the following is true?    
    • A. 

      Both aluminium fluoride and aluminium chloride are covalent compounds

    • B. 

      Both aluminium fluoride and aluminium chloride are ionic compounds

    • C. 

      Aluminium fluoride is an ionic compound while aluminium chloride is an covalent compound

    • D. 

      Aluminium fluoride is an covalent compound while aluminium chloride is an ionic compound