Senior Secondary (HKDSE) · Chemistry

Fractional distillation, uses, pollution effects: Practice Questions

5 multiple-choice questions marked as you go, and 2 written questions with worked solutions. All on Fractional distillation, uses, pollution effects.

7 questions12 marksFree, no account

Question 1

1 mark

下列哪種大氣污染物的主要來源並非直接來自化石燃料中的雜質，而是由於引擎內的高溫環境促使空氣中的成分發生反應而產生的？

Question 2

1 mark

考慮眃油分餾中的兩個餾分：眃油氣（LPG）哌煤油。下列哪項陳述正確描述了它們的性質？

Question 3

1 mark

在高溫燃燒化石燃料時，大氣中的氮氣和氧氣會反應生成一氧化氮：
\(\text{N}_2(g) + \text{O}_2(g) \rightarrow 2\text{NO}(g)\)
下列關於此反應的敘述，哪項是正確的？

Question 4

1 mark

在石油分餾過程中，殘餘物（\(residue\)）通常在分餾塔的底部被收集。下列關於殘餘物的主要用途，哪項是正確的？

Question 5

1 mark

發電廠燃燒化石燃料會釋放多種污染物。下列哪種污染物的主要來源是燃料中原本存在的非碳氫雜質？

Question 6

2 marks

當汽車引擎在氧氣供應不足的情況下燃燒汽油時，會產生一種無色無味的有害氣體。指出該氣體的名稱，並簡述其對人體健康的影響。

Write your answer out first, then check it against the worked solution.

Question 7

5 marks

比較石油分餾中「重油」與「汽油」餾分的燃燒特徵。解釋為什麼在相同的空氣供應下，重油燃燒時會產生較多黑煙，並指出這種污染物對環境的一個具體影響。

Write your answer out first, then check it against the worked solution.

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