Advertisements
Advertisements
प्रश्न
Give one example of an oxidation-reduction reaction which is also a displacement reaction.
Advertisements
उत्तर
CuO + H2 → Cu + H2O
In this reaction, Cu is being displaced from the reaction, so it is a displacement reaction. It is also a redox reaction because CuO is reduced to Cu and H2 is oxidised to H2O.
APPEARS IN
संबंधित प्रश्न
Hydrogen burns with a ______ flame and ______ sound is heard.
Explain the following in term Reduction of gain or loss of oxygen with two example.
Identify from the reaction the reactants that undergo oxidation and reduction.
2Mg + O2 → 2MgO
Compare hydrogen with alkali metals on the basis of:
Oxide formation
Why zinc and aluminium are considered to have a unique nature. Give balanced equations to support your answer.
Is it essential that oxidation and reduction must occur side by side in a chemical reaction? Explain
Reacting with water, an active metal produces
A metal oxide that is reduced by hydrogen is
For the reaction PbO + H2→ Pb + H2O, which of the following statements is wrong?
State what is reducing agent. Give an example of oxidising agent in the gaseous, liquid, and solid form.
\[\ce{MnO2 + 4HCl -> + 2H2O + Cl2}\]
Identify the substance oxidized in the above equation.
When Ag is exposed to air it gets a black coating of ____________.
Identify the oxidising agent (oxidant) in the following reactions
`"V"_2"O"_5 + 5"Ca" -> 2"V" + 5"CaO"`
During the reaction of some metals with dilute hydrochloric acid, following observations are made.
Silver metal does not show any change
Explain this observation giving suitable reason.
Why do we store silver chloride in a dark coloured bottle?
Write a short note on oxidizing and reducing agents.
What is a redox reaction?
Mention some oxidation reactions that occur in daily life.
State whether the given chemical reaction is a redox reaction or not. Justify your answer.
\[\ce{MnO_2 + 4HCl->MnCl_2 +2H_2O + Cl_2}\]
State the change in colour observed in following case mentioning the reason:
Copper powder is strongly heated in air.
