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14 Oxidation and Reduction Reactions MCQ1

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14 Oxidation and Reduction Reactions MCQ1

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Questions and Answers

What is the purpose of adding dilute HCl in the test for sulfites?

To form a green precipitate

To oxidise the sulphite

To reduce the sulphite

To dissolve the white precipitate (correct)

Which of the following is NOT a common oxidising agent?

Oxygen

Sodium dichromate

Sodium chloride (correct)

Hydrogen peroxide

What is the colour of the solution when bromine water is added to potassium iodide?

Colourless

Green

Red-brown (correct)

Orange

What is the function of an oxidising agent in a reaction?

To allow oxidation to happen by gaining electrons Signup and view all the answers

What is the purpose of the test for Fe2+?

To ensure no Fe3+ is present Signup and view all the answers

What is the colour of the precipitate formed when BaCl₂ is added to a sulphite solution?

White Signup and view all the answers

What is the colour of the precipitate formed when chlorine is added to a Fe(II) solution?

Red-Brown Signup and view all the answers

What indicates the presence of Fe 3+ ions in a solution?

An orange-brown precipitate Signup and view all the answers

What is added to the test tube to detect the presence of nitrate ions?

Iron II sulphate and concentrated sulphuric acid Signup and view all the answers

What is the result of the test for nitrate ions?

A brown ring formed near the bottom of the test tube Signup and view all the answers

What is the result of adding silver nitrate to a chloride solution?

A white precipitate Signup and view all the answers

What is the result of adding magnesium sulfate to a carbonate solution?

A white precipitate Signup and view all the answers

What is the result of adding ammonium molybdate to a phosphate solution?

A white precipitate Signup and view all the answers

14 Oxidation and Reduction Reactions MCQ1

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Podcast

Questions and Answers

What is the purpose of adding dilute HCl in the test for sulfites?

Which of the following is NOT a common oxidising agent?

What is the colour of the solution when bromine water is added to potassium iodide?

What is the function of an oxidising agent in a reaction?

What is the purpose of the test for Fe2+?

What is the colour of the precipitate formed when BaCl₂ is added to a sulphite solution?

What is the colour of the precipitate formed when chlorine is added to a Fe(II) solution?

What indicates the presence of Fe 3+ ions in a solution?

What is added to the test tube to detect the presence of nitrate ions?

What is the result of the test for nitrate ions?

What is the result of adding silver nitrate to a chloride solution?

What is the result of adding magnesium sulfate to a carbonate solution?

What is the result of adding ammonium molybdate to a phosphate solution?

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