
第20節十分鐘小測
Quiz
•
Science
•
1st Grade
•
Practice Problem
•
Hard
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1 下列哪個變化不是氧化還原反應?
A CaCO3(s) + CO2(g) + H2O(l) → Ca(HCO3)2(aq)
B 3Cu(g) + 8HNO2(aq) → 3Cu(NO3)2(aq) + 2NO(g) + 4H2O(l)
C 2Cr(OH)3(aq) + ClO3–(aq) + 4OH–(aq) → 2CrO42–(aq) + Cl–(aq) + H2O(l)
D Mn(s) + 2HNO3(aq) + 2H+(aq) → Mn2+(aq) + 2NO2(aq) + 2H2O(l)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2 考慮以下的反應:
3Na2S2O4(aq) + 6NaOH(aq) → 5Na2SO3(aq) + Na2S(aq) + 3H2O(l)
下列有關這反應的陳述,何者正確?
(1) 氫氧化鈉作為氧化劑。
(2) 硫在二硫亞磺酸鈉 Na2S2O4(aq) 中的氧化數由 +3 變成 Na2SO3(aq) 中的 +4。
(3) 硫在二硫亞磺酸鈉 Na2S2O4(aq) 中的氧化數由 +3 變成 Na2S(aq) 中的 –2。
A 只有 (1)
B 只有 (2)
C 只有 (1) 和 (3)
D 只有 (2) 和 (3)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3 下列哪個反應中畫有底線的物質是氧化劑?
A 2NaCl(aq) + H2SO4(aq) → Na2SO4(aq) + 2HCl(aq)
B Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)
C Ba(NO3)2(aq) + H2SO4(aq) → BaSO4(s) + 2HNO3(aq)
D AgNO3(aq) + HCl(aq) → AgCl(s) + HNO3(aq)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A 二氧化碳;氫氧化鈣溶液
B 氯;酸化高錳酸鉀溶液
C 二氧化硫 ;溴水
D 二氧化硫 ;酸化重鉻酸鉀溶液
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5 可用下列哪些物質來辨別濃硝酸和濃硫酸?
(1) 碳酸鈉粉末
(2) 銅屑
(3) 硫粉末
A 只有 (1) 和 (2)
B 只有 (1) 和 (3)
C 只有 (2) 和 (3)
D (1)、(2) 和 (3)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6 考慮以下的氧化還原方程式:
6Sb(s) + wNO3–(aq) + xH+(aq) → 3Sb2O5(s) + yNO(g) + zH2O(l)
下列哪個組合(w;x;y;z)正確?
A 5; 10 ; 10; 5
B 5; 5; 5; 10
C 10; 5 ; 5; 10
D 10; 10; 10; 5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A 只有 (1) 和 (2)
B 只有 (1) 和 (3)
C 只有 (2) 和 (3)
D (1)、(2) 和 (3)
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