TOEFL Reading Practice Online | Q&A 005

This is an original TOEFL-style academic reading passage with practice questions, written for self-study and not reproduced from any official test. Consider giving yourself about 1.5 minutes per question as a starting pace, then adjust as needed.

Passage

Potash Production in Colonial North America

[1] Among the many products colonial settlers in North America learned to manufacture from local resources, potash held a particularly practical place. Potash, made from the ashes of burned wood, was a key ingredient in making soap and, when combined with sand, in producing glass. Because forests covered much of the land that settlers were clearing for farmland, wood ashes were abundant and effectively a byproduct of an activity settlers needed to perform anyway.

[2] The process of making potash was straightforward but labor-intensive. Settlers burned large quantities of wood, collected the resulting ashes, and then passed water through them repeatedly, dissolving the soluble alkaline salts the ashes contained. This liquid, sometimes called lye, was then boiled down in large kettles until most of the water evaporated, leaving behind a concentrated residue. Further heating fused this residue into a solid, crude form of potash that could be transported and sold.

[3] Because clearing forested land for agriculture was already necessary, and because burning felled timber was often the fastest way to remove it, potash making fit naturally into the broader work of establishing new farms. Settlers who might otherwise have simply burned unwanted timber and discarded the ashes could instead sell the resulting potash, offsetting some of the considerable cost and labor involved in preparing land for crops.

[4] Potash quickly became a valuable export commodity, particularly appealing to colonial economies that had relatively few other goods in high demand overseas. European industries, especially glassmaking and textile bleaching operations, provided a steady market for imported potash, and colonial merchants organized shipments alongside other raw materials such as timber and furs. Regions with extensive hardwood forests tended to produce potash of higher quality, since different tree species yielded ashes with varying concentrations of usable alkaline salts.

[5] Over time, as forests near settled areas were cleared and agriculture expanded, the easy supply of wood ash near populated regions diminished, and potash production gradually shifted toward the edges of settlement, where fresh timber was still being cleared. Eventually, other methods of producing industrial alkalis, developed as chemistry advanced, reduced the importance of wood-ash potash as a commercial product, though it remained a familiar part of household soap-making in many rural communities well after its commercial significance had faded.

Questions

1. What is the main topic of the passage?

• (A) The chemistry of soap manufacturing
• (B) The history of European glassmaking
• (C) The production and economic role of potash in colonial North America
• (D) Methods of clearing forested land

2. The word "abundant" in paragraph 1 is closest in meaning to

• (A) plentiful
• (B) scarce
• (C) expensive
• (D) contaminated

3. According to paragraph 1, why were wood ashes readily available to colonial settlers?

• (A) Ash was imported from Europe in large quantities.
• (B) Settlers planted trees specifically to burn them for ash.
• (C) Ash was collected from coastal shipwrecks.
• (D) Settlers were clearing forests for farmland, which produced ash as a byproduct.

4. The word "residue" in paragraph 2 refers to

• (A) the wood that was burned
• (B) the water poured through the ashes
• (C) the concentrated material left after the liquid was boiled down
• (D) the kettles used for boiling

5. According to paragraph 3, why did potash making fit naturally into establishing new farms?

• (A) It required equipment that farmers already used.
• (B) It made use of timber that had to be cleared and burned anyway.
• (C) Colonial law required every farm to produce it.
• (D) It removed the need to plow fields.

6. Why does the author mention "glassmaking and textile bleaching operations" in paragraph 4?

• (A) To identify the industries that created steady European demand for potash
• (B) To describe industries that competed with potash making in the colonies
• (C) To argue that most potash was used within the colonies
• (D) To show that potash was difficult to transport

7. According to paragraph 4, why did regions with extensive hardwood forests tend to produce higher-quality potash?

• (A) Different kinds of trees produce ashes with different amounts of usable alkaline salts.
• (B) Hardwood burns faster than other types of wood.
• (C) Merchants in those regions paid higher prices.
• (D) Those regions were closer to seaports.

8. The word "diminished" in paragraph 5 is closest in meaning to

• (A) increased
• (B) stabilized
• (C) decreased
• (D) disappeared instantly

9. It can be inferred from paragraph 5 that commercial potash production depended on

• (A) financial support from colonial governments
• (B) a continuing supply of newly cleared forest land
• (C) equipment imported from Europe
• (D) advances in chemistry

10. According to paragraph 5, what eventually reduced the commercial importance of wood-ash potash?

• (A) A decline in the demand for soap
• (B) A shortage of kettles for boiling
• (C) Stricter European import regulations
• (D) The development of other methods of producing industrial alkalis

Answers and explanations

1. (C) The passage explains how potash was made (paragraph 2), why it suited frontier farming (paragraph 3), its value as an export (paragraph 4), and its decline (paragraph 5).
2. (A) "Abundant" means plentiful: land clearing produced large amounts of ash.
3. (D) Paragraph 1 says forests covered much of the land being cleared for farmland, so ashes were "effectively a byproduct" of that work.
4. (C) The residue is what remained in the kettles after most of the water in the lye had evaporated.
5. (B) Paragraph 3 explains that settlers had to clear and often burn timber anyway, so selling the resulting potash helped offset the cost of preparing land.
6. (A) These industries are named as the source of "a steady market for imported potash." Option (B) is wrong because they were European, not colonial, industries.
7. (A) Paragraph 4 states that "different tree species yielded ashes with varying concentrations of usable alkaline salts."
8. (C) "Diminished" means decreased. The supply shrank gradually, so (D) is too strong.
9. (B) Production moved "toward the edges of settlement, where fresh timber was still being cleared" once nearby forests were gone, which shows it relied on ongoing clearing. Chemistry (D) is what later reduced its importance.
10. (D) Paragraph 5 says other methods of producing industrial alkalis, "developed as chemistry advanced," reduced its commercial importance.

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