12th Standard Syllabus & Materials
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Published on: 21/06/2021
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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 are the limitations of Ostwald's dilution law?
2.
How is common ion effect related to the solubility of the electrolyte?
3.
The KW of a neutral solution is 10-12 at a particular temperature. What are its pH and pOH values?
4.
When temperature is increased, will ionic product of water increase or decrease? Give reason to justify your answer.
5.
Define neutralisation reaction.
1.
Ostwald's dilution law is applicable only for weak electrolyte and does not hold good for concentrated solution.
2.
Common ion effect decreases the solubility of the electrolyte.
3.
pKw = pH + pOH = 10-12
For a neutral solution, pH = pOH
So pH = pOH = 6.
4.
With increase in temperature the ionic product of water will increase since the concentration of H3O+ and OH- ions will increase.
5.
When an acid reacts with a base, a salt and water are formed and the reaction is called neutralization.
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