KIMIA OBJEKTIF 1
Quiz
•
Chemistry
•
2nd Grade
•
Medium
SITI Moe
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Rajah 8 menunjukkan susunan radas bagi penyaduran sudu besi dengan kuprum. Selepas satu jam, didapati sudu besi tidak disadurkan dengan kuprum. Apakah yang perlu dilakukan untuk memastikan proses penyaduran berlaku?
rlak
A. Tukar terminal pada sel
B. Gunakan larutan kuprum(II) nitrat sebagai elektrolit
C. Gunakan arus yang kecil
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. 1. Persamaan ion di bawah mewakili tindak balas antara larutan kalium dikromat(VI) dengan larutan ferum(II) sulfat.
Cr2O72- + 14H+ + 6Fe2+ → 6Fe3+ + 2Cr3+ + 7H2O
Apakah perubahan nombor pengoksidaan kromium dalam tindak balas itu?
A +6 kepada +2
B +6 kepada +3
C +7 kepada +2
D +7 kepada +3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. Larutan natrium bromida pekat dielektrolisis menggunakan elektrod karbon. Setengah persamaan yang manakah mewakili tindak balas di anod dan katod?
A.
Anod:
2Br- → Br2 + 2e
Katod:
Na+ + e → Na
B.
Anod:
2Br- → Br2 + 2e
Katod:
2H+ + 2e → H2
C.
Anod:
4OH- → 2H2O + O2 + 4e
Katod:
Na+ + e → Na
D.
Anod:
4OH- → 2H2O + O2 + 4e
Katod:
2H+ + 2e → H2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Rajah 9 menunjukkan susunan radas yang digunakan dalam elektrolisis.
Antara sebatian berikut, yang manakah boleh digunakan sebagai elektrolit?
A Larutan ammonia
B Larutan glukosa
C Naftalena
D Etanol
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. Jadual 2 menunjukkan pemerhatian bagi elektrolisis suatu bahan menggunakan elektrod karbon.
Ramalkan elektrolit yang digunakan dalam elektrolisis ini.
A Larutan kalium klorida pekat
B Larutan kuprum(Il) klorida pekat
C Asid hidroklorik cair
D Larutan magnesium bromida pekat
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6. Antara berikut, yang manakah bukan sebatian hidrokarbon?
A Protein
B Petrol
C Gas asli
D Gas metana
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7. Rajah 10 menunjukkan satu sebatian.
Namakan sebatian dalam Rajah 10.
A 2-metilpentana
B 2-metilheksana
C
1,1-dimetilpentana
D 1,1-dimetilbutana
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