10-minute Quiz : Ch10 Occurrence and extraction of metals

10-minute Quiz : Ch10 Occurrence and extraction of metals

Assessment

Assessment

Chemistry Aristo

Chemistry

10th - 12th Grade

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11 questions

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1.

Multiple Choice

30 sec

1 pt

Iron is the most abundant metal in the Earth’s crust.

A. True

B. False

2.

Multiple Choice

1 min

1 pt

Which of the following statements concerning metal ores is/are correct?

(1) Metal ores are found in the Earth’s crust and they are renewable.

(2) Metals exist as either free elements or compounds in metal ores.

(3) Extraction of metals must involve reduction of metal ores.

A. (1) only

B. (2) only

C. (1) and (3) only

D. (2) and (3) only

3.

Multiple Choice

1 min

1 pt

Which of the following properties are considered important when choosing a metal for making electric wires?

(1) High electrical conductivity

(2) Good ductility

(3) Low melting point

A. (1) and (2) only

B. (1) and (3) only

C. (2) and (3) only

D. (1), (2) and (3)

4.

Multiple Choice

1 min

1 pt

Which of the following properties are considered important when choosing a metallic substance for making nail clippers?

(1) High malleability

(2) High corrosion resistance

(3) High mechanical strength

A. (1) and (2) only

B. (1) and (3) only

C. (2) and (3) only

D. (1), (2) and (3)

5.

Multiple Choice

1 min

1 pt

Refer to the information in the table. Which material is the best for making kitchen foil?

A. P

B. Q

C. R

D. S

6.

Multiple Choice

30 sec

1 pt

Complete the following sentence with suitable words.

In general, the more stable the compounds (e.g. oxides) present in a metal ore, the more (a) _____________________ to extract the metal from its ore, and the (b) ________________ the metal was discovered in history.

A. (a) difficult it is; (b) later

B. (a) easily it is; (b) earlier

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