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Redoks Dan Elektrokimia

Redoks Dan Elektrokimia

Assessment

Interactive Video

Chemistry

12th Grade

Practice Problem

Medium

Created by

Finsensus Monas

Used 1+ times

FREE Resource

9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to oxygen in an oxidation reaction?

It is released.

It is captured.

It changes its oxidation state.

It gains electrons.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the oxidation state of a substance during an oxidation reaction?

It decreases.

It increases.

It remains unchanged.

It becomes zero.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to electrons in a reduction reaction?

They are released.

They are captured.

Their number decreases.

Their number increases.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Consider the reaction: MnO4- → Mn2+. What type of reaction is this?

Oxidation, because the oxidation state increases.

Reduction, because the oxidation state decreases.

Oxidation, because electrons are released.

Reduction, because oxygen is released.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to a substance that undergoes oxidation?

Its oxidation number decreases.

It gains electrons.

Its oxidation number increases.

It loses oxygen.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the reaction Mg + 2HCl → MgCl2 + H2, which substance is the oxidation product?

Mg

HCl

MgCl2

H2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following conditions indicates that a reaction is a redox reaction?

There is no change in oxidation numbers.

There is a free element present.

Only reduction occurs.

Only oxidation occurs.

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