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IGCSE A Level Chemistry MCQs – Mock Test 266

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Free "Materials Conservations MCQ" App Download (iOS & Android) with MCQ: There is saving of 95% energy in recycling rather than extracting of material; with answers: aluminum, copper, glass, and iron. Practice States of Matter Questions and Answers, Google Book to download free chapter for chemistry online skill acquisition.

Materials Conservations MCQ – Mock Test 266 PDF Download

MCQ 1326: There is saving of 95% energy in recycling rather than extracting of material:

  1. copper
  2. aluminum
  3. iron
  4. glass

MCQ 1327: What is true about nitrogen oxides?

  1. they are fertilizers
  2. they are pollutants
  3. they used as catalysts in many industrial processes
  4. none of above

MCQ 1328: Na3AlF6 that melts at 1000 °C is known as:

  1. cryolite
  2. bauxite
  3. brine
  4. sludge

MCQ 1329: Consider the equation: Mg(OH)2(s) + HCl → MgCl2. The other by product is:

  1. HO3+
  2. OH-
  3. H2O (l)
  4. H2(g)

MCQ 1330: If the position of functional group varies in each of its isomer then its is:

  1. position isomerism
  2. functional group isomerism
  3. chain isomerism
  4. none of above

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