General Principles and Processes of Isolation of Elements (Metallurgy) questions

507 published questions with worked solutions.

• Aluminium hydroxide is soluble in excess of sodium hydroxide forming the ion
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Which of the following is formed when aluminium oxide and carbon are strongly heated in dry chlorine gas?
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Extraction of lead by reduction methods is done by
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Aluminium oxide is not reduced by chemical reactions since
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Al(s) is to be converted into Al^ 3+ (aq) ion. How many steps are involved? (Assume ionization in one step)
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Al dissolves in molten NaOH with the formation of:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• The purification method used for mineral Al_2O_3 2H_2O (bauxite containing silica impurity) is:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• In Hall's process, the ore is mixed with:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Purification of alumina is essential because:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• The process used for purification of bauxite containing iron oxide impurity is known as:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• The process used for purification of bauxite ore containing high silica content as impurity is:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Alumina on heating with carbon in a nitrogen atmosphere gives:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Al_2O_3 can be converted to anhydrous AlCl_3 by heating:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• The role of fluorspar (CaF_2), which is added in small quantities in the electrolytic reduction of alumina dissolved in fused...
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Mineral of aluminium that does not contain oxygen is:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Aluminium is mainly extracted from:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Electrolytic reduction of alumina to aluminium by the Hall-Héroult process is carried out:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• The cryolite is:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• In the electrolysis of alumina, cryolite is added to:
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus
• Which of the following is not a mineral of aluminium?
  JEE Main · Chemistry · General Principles and Processes of Isolation of Elements (Metallurgy)
  Not in JEE Main or NEET syllabus

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