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AP EAMCET s-Block Elements — practice questions — page 5

Explore 128 free s-Block Elements questions in AP EAMCET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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s-Block Elements questions and exercises with answers

Showing questions 121–128 of 128.

Which sodium compound forms first from brine, ammonia and CO2 in the Solvay process?Read the answer and worked solution →Heating sodium bicarbonate gives sodium carbonate, water and which gas?Read the answer and worked solution →What is the only waste product of the Solvay process?Read the answer and worked solution →Who patented the 1792 salt, sulfuric acid, limestone and coal route to soda ash?Read the answer and worked solution →Which waste pair made Leblanc's process worse than Solvay's?Read the answer and worked solution →Sodium carbonate softens hard water by precipitating Ca2+ as what?Read the answer and worked solution →Sodium carbonate is a stronger base than bicarbonate but weaker than what?Read the answer and worked solution →Unlike most metal carbonates, which carbonate dissolves in water?Read the answer and worked solution →

Worked practice questions

Which sodium compound forms first from brine, ammonia and CO2 in the Solvay process?

  1. Sodium bicarbonate
  2. Sodium carbonate
  3. Sodium hydroxide
  4. Sodium sulfate
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Correct answer: A. Sodium bicarbonate

Sodium bicarbonate precipitates first and is later heated to give sodium carbonate.

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Heating sodium bicarbonate gives sodium carbonate, water and which gas?

  1. Carbon dioxide
  2. Hydrogen gas
  3. Oxygen gas
  4. Ammonia gas
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Correct answer: A. Carbon dioxide

In 2 NaHCO3 giving Na2CO3 + H2O + CO2, the gas released is carbon dioxide.

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What is the only waste product of the Solvay process?

  1. Ammonium sulfate
  2. Calcium chloride
  3. Calcium sulfide
  4. Hydrogen chloride
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Correct answer: B. Calcium chloride

Ammonia is recycled and only calcium chloride is left over as waste.

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More Chemistry topics

SolutionsAtomic StructureSurface ChemistryChemical Bonding and Molecular StructureClassification of ElementsHydrocarbonsSolid StateEquilibrium