Official CBSE Exam Papers for Class 12 Chemistry
Explore authentic exam materials through the CBSE Class 12 Chemistry Question Paper 2019 Set 12 Solved. Tailored for Class 12 learners, utilizing these Chemistry previous year papers ensures thorough preparation and strengthens time management skills before final CBSE evaluations.
Solved Previous Year Papers for Chemistry
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CBSE Class 12 Chemistry Question Paper Solved 2019 Set L. Students can download the last year board exams question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.
SECTION A
1. What is the coordination number of atoms in a (i) bcc structure, and (ii) fcc structure ?
2. Why are powdered substances more effective adsorbents than their crystalline forms ?
3. When a coordination compound CrCl3 . 6H2O is mixed with AgNO3, two moles of AgCl are precipitated per mole of the compound. What is the structural formula of the coordination compound ?
OR
What is the difference between a complex and a double salt ?
4. Which alkyl halide from the following pair would you expect to react more rapidly by an SN2 mechanism ?
5. Write the reaction involved in the Hoffmann bromamide degradation reaction.
OR
Propanamine and N,N-dimethylmethanamine contain the same number of carbon atoms, even though Propanamine has higher boiling point than N,N-dimethylmethanamine. Why ?
SECTION B
6. When dilute ferrous sulphate solution is added to an aqueous solution containing nitrate ion followed by careful addition of concentrated sulphuric acid along the sides of test tube, a brown ring is formed at the interface between the solution and sulphuric acid layers. Which anion is confirmed by the appearance of brown ring ? What is the composition of the brown ring ?
OR
How can you prepare Cl2 from HCl and HCl from Cl2 ? Write reactions only.
7. Define electrochemical cell. What happens when applied external potential becomes greater than o cell E of electrochemical cell ?
8. Give reasons for the following :
(a) Aquatic species are more comfortable in cold water than warm water.
(b) At higher altitudes people suffer from anoxia resulting in inability to think.
OR
What type of azeotropic mixture will be formed by a solution of acetone and chloroform ? Justify on the basis of strength of intermolecular interactions that develop in the solution.
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CBSE Class 12 Chemistry Question Paper 2019 Set 12 Solved & Previous Year Question Papers for Class 12 Chemistry
Class 12 Chemistry Past Exam Papers & Resources
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Importance of Solving CBSE Class 12 Chemistry Question Paper 2019 Set 12 Solved
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FAQs
The CBSE Class 12 Chemistry Question Paper 2019 Set 12 Solved is available for download on StudiesToday.com. It includes complete set with all sections so that Class 12 students can practice with the exact same paper that came in the CBSE exams.
Yes, the solutions for CBSE Class 12 Chemistry Question Paper 2019 Set 12 Solved are prepared by subject matter experts as per official marking scheme. Class 12 students will understand the structure of answers and 'step-marks' methodology Chemistry.
Solving previous year papers like CBSE Class 12 Chemistry Question Paper 2019 Set 12 Solved is important to understand repeat themes and question difficulty levels of Chemistry. It helps Class 12 students to test their time management skills too.
Yes, where applicable, CBSE Class 12 Chemistry Question Paper 2019 Set 12 Solved is available in both English and Hindi mediums. All students from Class 12 can access Chemistry study material in their preferred language.
No, all previous year question papers on StudiesToday, including CBSE Class 12 Chemistry Question Paper 2019 Set 12 Solved, are provided free of charge in mobile-friendly PDF.