Redox Reactions
Trending Questions
Q. 2CuI→Cu+CuI2, the reaction is
- Redox
- Neutalisation
- Oxidation
- Reduction
Q. Oxidants are substances that show:
- Decrease in oxidation number
- Oxidize others and reduce themselves
- All the above
- Gain electrons during a change
Q. Reduction involves
- Loss of e–
- gain of
- Increase in valency of positive part
- Decrease in valency of negative part
Q. Which of the following statements is incorrect:
- Hydrogen preoxide can be used as a bleaching agent as it is a good oxidant
- Hydrogen peroxide can restore the color of old paintings
- Hydrogen peroxide contains peroxide linkage in it's structure
- None of the above
Q. Oxidation is a process that involves:
- De-electronation
- Addition of hydrogen
- Addition of metal
- De-protonation
Q. When H2S reacts with a halogen, the halogen
- are reducted
- from sulphur halides
- None of these
- Mg is oxidized
Q. In a redox reaction, oxidation number of a reductant:
- increases
- decreases
- does not change
- cannot be predicted
Q. H2S is ______ to S:
- None of these
- Oxidized
- Reduced
- Precipitated
Q. The conversion of PbO2 to Pb(NO3)2 is
- Reduction
- Oxidation
- Neither Oxidation nor reduction
- Both oxidation & reduction
Q. In a redox reaction, oxidation number of an oxidant:
- increases
- decreases
- does not change
- cannot be predicted