10-minute Quiz : Chapter 4 Rocks and minerals

Refer to the following diagram. Which of the following word equations represents the reaction taking place?

• A. Calcium oxide + carbon dioxide → calcium carbonate
• B. Calcium oxide + carbon dioxide → calcium carbonate + water
• C. Calcium hydroxide + carbon dioxide → calcium carbonate
• D. Calcium hydroxide + carbon dioxide → calcium carbonate + water

Which of the following processes is involved when making quicklime from limestone?

• A. Dissolving in water
• B. Electrolysis
• C. Strong heating
• D. Distillation

Which of the following statements concerning carbon dioxide are correct?

(1) It has a smell of burning carbon.

(2) It turns hydrogencarbonate indicator from red to yellow.

(3) It does not relight a glowing splint.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

A student uses the set-up shown in the diagram below to extract lead from lead(II) oxide. Which of the following statements concerning the experiment are correct?

(1) Silvery solids form in the boiling tube.

(2) The limewater turns milky.

(3) The type of reaction involved is thermal decomposition.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Rock salt is an ore of sodium. Which of the following statements is correct?

• A. Rock salt gives a brick-red flame in a flame test.
• B. Sodium can be extracted from rock salt by heating rock salt alone.
• C. Sodium can be extracted from rock salt by heating rock salt with carbon.
• D. Sodium can be extracted from rock salt by electrolysis of molten rock salt.

Which of the following statements concerning marble are correct?

(1) It contains calcite.

(2) It is a soft material.

(3) It can be used as a construction material.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Carbon dioxide is produced when dilute hydrochloric acid reacts with

• A. quicklime.
• B. slaked lime.
• C. limewater.
• D. limestone.

The following pathway shows the weathering of limestone statues by carbon dioxide. What are X and Y respectively?

• A
• B
• C
• D

Which of the followings are the physical properties of calcium carbonate?

(1) It is a white solid.

(2) It is insoluble in water.

(3) It is soluble in dilute hydrochloric acid.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Consider the following statements and choose the best answer:

1st statement

Limestone can be used to treat acidic wastewater from factories.

2nd statement

Limestone is a rock that contains calcium.

• A. Both statements are true and the 2nd statement is a correct explanation of the 1st statement.
• B. Both statements are true but the 2nd statement is NOT a correct explanation of the 1st statement.
• C. The 1st statement is false but the 2nd statement is true.
• D. Both statements are false.