
2022-23 F2 Chapter9 (5)
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Hard
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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • Ungraded
我有興趣參加科學比賽(香港數理學會),(報名費用HK$60) (無須外出, 只需留校作賽) 20/4 -5/5
會自費參加
不會自費參加
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
把溶液X加入大理石後有氣泡形成,把這氣體加入石灰水中會使石灰水變為乳濁。我們可以推論X是
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列哪項是碳酸鈣與硝酸發生反應時所產生的氣體?
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
若把雞蛋殼放入稀氫氯酸時,蛋殼表面有氣泡形成,這釋出的氣體是
氫。
氧。
二氧化碳。
氮。
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
珍珠含有碳酸鈣。把珍珠放入盛有硫酸的燒杯時,
兩者會發生反應並釋出氫氣泡。
兩者會發生反應並釋出二氣化碳氣泡。
兩者會發生反應並釋出氧氣泡。
並不會釋出氣泡。
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
把粉筆碎加入盛有稀氫氯酸的大試管,反應中會釋出一種氣體,這種氣體會使石灰水變為乳濁。這顯示
粉筆含有金屬。
粉筆含有碳酸鈣。
粉筆是鹼性的。
粉筆是酸性的。
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪項物質加入石灰石會產生氣體?
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