Q.1
What is the oxidation half reaction of Cu+2 + Zn → Cu + Zn+2?
  • a) Zn → Zn+2
  • b) Cu+2 → Cu
  • c) Cu+2 → Zn+2
  • d) Zn → Cu
Q.2
When a zinc rod is kept in a copper nitrate solution what happens?
  • a) zinc is deposited on copper
  • b) copper is deposited on zinc
  • c) zinc is deposited in the beaker
  • d) copper is deposited in the beaker
Q.3
In this reaction Cu+2 + Zn → Cu + Zn+what is an oxidising agent?
  • a) copper
  • b) zinc
  • c) hydrogen
  • d) oxygen
Q.4
Loss of electrons is _________________
  • a) oxidising agent
  • b) oxidation
  • c) reducing agent
  • d) reduction
Q.5
Intensity of blue colour increases gradually when _________________
  • a) copper rod is dipped in silver nitrate solution
  • b) silver rod is dipped in copper nitrate solution
  • c) zinc rod is dipped in silver solution
  • d) copper rod is dipped in zinc rod solution
Q.6
Which of the following is true as per metal activity series?
  • a) Zn<Ag<Cu
  • b) Zn<Cu<Ag
  • c) Zn>Ag>Cu
  • d) Zn>Cu>Ag
Q.7
What is a reducing agent of the reaction Cu+2 + Zn → Cu + Zn+2?
  • a) copper
  • b) zinc
  • c) hydrogen
  • d) oxygen
Q.8
The oxidation number of oxidant increases in a Redox reaction.
  • a) true
  • b) false
Q.9
Which of the following is not an oxidising agent?
  • a) magnesium oxide
  • b) carbon dioxide
  • c) ozone
  • d) sodium hydride
Q.10
Hydrogen peroxide is a ______________
  • a) oxidising agent
  • b) reducing agent
  • c) both reducing and oxidizing agent
  • d) neither reducing nor an oxidizing agent
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