CBSE Class 12 Chemistry Question Paper Solved 2019 Set I

CBSE Class 12 Chemistry Question Paper Solved 2019 Set I. 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. Write IUPAC name of the complex K₃[Cr(C₂O₄)₃]

OR

Using IUPAC norms write the formula of Hexaamminecobalt(III) sulphate.

2. Why is CH₂ = CH – CH₂ – Cl more easily hydrolysed than

CH₃ – CH₂ – CH₂ – Cl ?

3. Write the IUPAC name of the following compound :

4. What is the difference between a glycosidic linkage and a peptide linkage ?

OR

What is the difference between Nucleotide and Nucleoside ?

5. Arrange the following in increasing order of their boiling point :

CH₃CH₂OH, CH₃CHO, CH₃ – O – CH₃

What happens when AgCl is doped with CdCl₂ ? What is the name of this defect ?

OR

What type of defect is shown by NaCl in

(a) stoichiometric defects, and

(b) non-stoichiometric defects ?

7. Account for the following :

(a) Gabriel phthalimide synthesis is not preferred for preparing aromatic primary amines.

(b) On reaction with benzene sulphonyl chloride, primary amine yields product soluble in alkali whereas secondary amine yields product insoluble in alkali. 

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