Question 1

Which of the following describes the reaction between an acid and a base to produce a salt and water?

Accepted Answer

Neutralisation

Answer

Sublimation

Answer

Hydration

Answer

Thermal decomposition

Question 2

Which ion is produced by all acids when they are dissolved in water, according to the Arrhenius theory?

Accepted Answer

Answer

Answer

Answer

Question 3

An oxide is dissolved in water and the resulting solution turns universal indicator purple. Which element could form this oxide?

Accepted Answer

Sodium

Answer

Sulfur

Answer

Carbon

Answer

Phosphorus

Question 4

Which of the following describes the behavior of an amphoteric oxide?

Accepted Answer

It reacts with both acids and bases to form a salt and water

Answer

It only reacts with acids to form a salt and water

Answer

It only reacts with bases to form a salt and water

Answer

It does not react with either acids or bases

Question 5

Which of the following is produced when an acid reacts with a metal carbonate?

Accepted Answer

Salt, water and carbon dioxide

Answer

Salt and hydrogen only

Answer

Salt and water only

Answer

Salt and carbon dioxide only

Question 6

Which of the following describes the properties of a strong base in an aqueous solution?

Accepted Answer

It completely dissociates to produce

OH^{-}

ions

Answer

It partially dissociates to produce

OH^{-}

ions

Answer

It partially dissociates to produce

OH^{-}

ions

Answer

It completely dissociates to produce

OH^{-}

ions

Question 7

Which of the following salt preparation methods is most suitable for making the insoluble salt, barium sulfate (

OH^{-}

)?

Accepted Answer

Precipitation

Answer

Reacting a metal with an acid

Answer

Titration

Answer

Reacting an insoluble base with an acid

Question 8

Which of the following describes the color change of methyl orange indicator when it is added to a solution of sodium hydroxide?

Accepted Answer

From orange to yellow

Answer

From colorless to pink

Answer

From orange to red

Answer

From yellow to blue

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