Redox Reactions
5 Questions
| Attempts: 488
This is a mini-quiz on redox reactions. Short and sweet!
Questions and Answers
- 1.
What does the term 'oxidisation' refer to?
- A.
Gain of electrons
- B.
Loss of electrons
- C.
Gain of water molecules
- D.
Loss of water molecules
Correct Answer
B. Loss of electronsExplanation
Chemical reactions involving oxidisation and reduction of atoms must be balanced not only in atoms but in electrons as wellRate this question:
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- 2.
What is another term for 'oxidisers'?
- A.
Oxidising agent
- B.
Oxidant
- C.
Oxidiser
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
oxidizing agents are substances that have the ability to oxidize other substances are said to be oxidative, they are also known as, oxidants, or oxidizers.Rate this question:
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- 3.
What is the deposition of a metallic coating by putting a negative charge on an object and exposing it to a solution containing metal salt.
- A.
Oxidisation
- B.
Diffusion
- C.
Electroplating
- D.
Reduction
Correct Answer(s)
B. Diffusion
C. ElectroplatingExplanation
choose the better answer!Rate this question:
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- 4.
When do we say the oxidisation number has decreased?
- A.
When the oxidisation number increases
- B.
When the oxidisation number decreases
- C.
When one has lost electrons
- D.
When one has gained electrons
Correct Answer
B. When the oxidisation number decreases -
- 5.
Cu(s)+½O2(g)---->??Find ??
- A.
Cu(II)SO4(aq)
- B.
CuO(s)
- C.
Cu(s)
- D.
O2(g)
Correct Answer
B. CuO(s)Explanation
Copper (Cu) has been oxidised to copper oxide (CuORate this question:
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Jan 11, 2013Quiz Edited by
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Apr 19, 2010Quiz Created by
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