Takrifan Redoks(2)

Takrifan Redoks(2)

5th Grade

15 Qs

quiz-placeholder

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Takrifan Redoks(2)

Takrifan Redoks(2)

Assessment

Quiz

Chemistry

5th Grade

Practice Problem

Hard

Created by

CHUINH Moe

Used 2+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Mg + H2SO4 → MgSO4 + H2


Berdasarkan persamaan di atas, nyatakan perubahan nombor pengoksidaan bagi Magnesium.

0 kepada +2

0 kepada 2

0 kepada +1

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Berdasarkan persamaan kimia berikut, yang manakah bukan merupakan tindak balas redoks.

Mg + H2SO4 → MgSO4 + H2

AgNO3 + NaCl → AgCl + NaNO3

2Na + 2H2O → 2NaOH + H2

Zn + CuSO4 → ZnSO4 + Cu

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Apabila Nombor Pengoksidaan sesuatu unsur bertambah, unsur tersebut mengalami pengoksidaan/ dioksidakan

Benar

Salah

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Yang manakah antara berikut berlaku semasa pengoksidaan?

Kehilangan atom oksigen

Penerimaan atom hidrogen

Penerimaan elektron

Nombor pengoksidaan bertambah

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Yang manakah adalah tindak balas redoks?

KOH + HCl --> KCl + H2O

Mg + Pb(NO3)2 --> Mg(NO)3)2 + Pb

Na2CO3 + Ca(NO3)2 --> CaCO3 + 2NaNO3

ZnCO3 + 2HNO3 --> Zn(NO3)2 + H2O + CO2

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Apakah nombor pengoksidaan Br dalam BrO4-?

+4

+5

+7

+8

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Apakah nombor pengoksidaan Y dalam ion Y2O82-?

-8

-7

+7

+8

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