12th Standard Syllabus & Materials
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Published on: 21/06/2021
QB365 provides detailed and simple solution for every Creative Questions in class 12 Chemistry Subject. It will helps to get more idea about question pattern in
every Creative questions with solution.
Download Tamil Nadu 12th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Chemistry Test1.
What is passivation?
2.
Explain how iron is protected from corrosion by coating with magnesium.
3.
What is a fuel cell?
4.
Write the oxidation, reduction and overall redox reaction taking place in the Lithium ion battery.
5.
Give an example of secondary cell.
1.
The metal is treated with strong oxidising agents such as concentrated HNO3. As a result, protective oxide layer is formed on the surface of metal
2.
In this technique, metals such as Mg or zinc which is corroded more easily than iron can be used as a sacrificial anode and the iron material acts as a cathode. So iron is protected, but Mg or Zn is corroded.
3.
The galvanic cell in which the energy of combustion of fuels such as H2, CO, CH4 etc is directly converted into electrical energy is called the fuel cell.
4.
At the anode oxidation occurs
Li(s) ⟶ \({ Li }_{ (aq) }^{ + }\) + e-
At the cathode reduction occurs
Li++ CoO2(s) + e- ⟶ Li CoO2(s)
Overall reactions
Li(s)+ CoO2 ⟶ LiCoO2(s)
5.
Lead storage battery.
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