Chemistry Verified Solutions
JEE Advanced 2019 — Paper 1 (Chemistry) Solutions
Step-by-step mathematical proofs, multi-correct partial marking evaluation, and interactive practice for Paper 1.
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Chemistry Questions (17 Questions)
Interactive Partial Marking ModeQ18Paper 1Chemistry (Physical)Single Correct OptionMedium
Coordination Compounds & Qualitative Inorganic Analysis
Scoring Scheme: +3 Full Marks • -1 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q18] Among the following octahedral coordination complexes, which one exhibits the highest crystal field stabilization energy (CFSE) in terms of magnitude of and possesses zero unpaired electrons ()?
Q19Paper 1Chemistry (Inorganic)One or More Correct (Partial Marking)Hard
Organic Chemistry & Reaction Mechanisms
Scoring Scheme: +4 Full Marks • -2 Negative Marks • Partial Marking Enabled
[JEE Advanced 2019 Paper 1 Chemistry Q19] Treatment of 2,3-dimethylbutane-2,3-diol (Pinacol) with concentrated sulphuric acid () at elevated temperature yields 3,3-dimethylbutan-2-one (Pinacolone). Which of the following statements concerning this reaction is/are CORRECT?
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Q20Paper 1Chemistry (Organic)One or More Correct (Partial Marking)Hard
Chemical Kinetics & Radioactivity
Scoring Scheme: +4 Full Marks • -2 Negative Marks • Partial Marking Enabled
[JEE Advanced 2019 Paper 1 Chemistry Q20] In a detailed investigation of Consecutive First Order Reactions & Steady State Approximation under Chemical Kinetics & Radioactivity, consider the reacting mixture and mechanism:
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Q21Paper 1Chemistry (Physical)One or More Correct (Partial Marking)Medium
Thermodynamics & Thermochemistry
Scoring Scheme: +4 Full Marks • -2 Negative Marks • Partial Marking Enabled
[JEE Advanced 2019 Paper 1 Chemistry Q21] In a detailed investigation of Born-Haber Cycle & Lattice Energy Calculations under Thermodynamics & Thermochemistry, consider the reacting mixture and mechanism:
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Q22Paper 1Chemistry (Organic)One or More Correct (Partial Marking)Hard
Electrochemistry
Scoring Scheme: +4 Full Marks • -2 Negative Marks • Partial Marking Enabled
[JEE Advanced 2019 Paper 1 Chemistry Q22] In a detailed investigation of Concentration Cell with Transference & Liquid Junction Potential under Electrochemistry, consider the reacting mixture and mechanism:
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Q23Paper 1Chemistry (Inorganic)One or More Correct (Partial Marking)Medium
Chemical & Ionic Equilibrium
Scoring Scheme: +4 Full Marks • -2 Negative Marks • Partial Marking Enabled
[JEE Advanced 2019 Paper 1 Chemistry Q23] In a detailed investigation of Simultaneous Solubility in Amphoteric Hydroxide Solutions under Chemical & Ionic Equilibrium, consider the reacting mixture and mechanism:
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Q24Paper 1Chemistry (Physical)One or More Correct (Partial Marking)Hard
Solid State
Scoring Scheme: +4 Full Marks • -2 Negative Marks • Partial Marking Enabled
[JEE Advanced 2019 Paper 1 Chemistry Q24] In a detailed investigation of Radius Ratio & Octahedral vs Tetrahedral Void Occupancy under Solid State, consider the reacting mixture and mechanism:
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Q25Paper 1Chemistry (Inorganic)Numerical Value TypeMedium
Solutions & Colligative Properties
Scoring Scheme: +4 Full Marks • 0 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q25] In a detailed investigation of Van't Hoff Factor in Dimerization and Association Equilibria under Solutions & Colligative Properties, consider the reacting mixture and mechanism:
Q26Paper 1Chemistry (Organic)Numerical Value TypeHard
p-Block Elements
Scoring Scheme: +4 Full Marks • 0 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q26] In a detailed investigation of Oxyacids of Phosphorus & Silicon Polymers Structure under p-Block Elements, consider the reacting mixture and mechanism:
Q27Paper 1Chemistry (Physical)Numerical Value TypeMedium
d- and f-Block Elements
Scoring Scheme: +4 Full Marks • 0 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q27] In a detailed investigation of Lanthanoid Contraction & Separation of Rare Earth Ions under d- and f-Block Elements, consider the reacting mixture and mechanism:
Q28Paper 1Chemistry (Organic)Numerical Value TypeHard
Metallurgy & Extraction
Scoring Scheme: +4 Full Marks • 0 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q28] In a detailed investigation of Ellingham Diagram & Thermodynamic Feasibility of Smelting under Metallurgy & Extraction, consider the reacting mixture and mechanism:
Q29Paper 1Chemistry (Inorganic)Numerical Value TypeMedium
Aldehydes, Ketones and Carboxylic Acids
Scoring Scheme: +4 Full Marks • 0 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q29] In a detailed investigation of Intramolecular Aldol & Michael Addition Sequence under Aldehydes, Ketones and Carboxylic Acids, consider the reacting mixture and mechanism:
Q30Paper 1Chemistry (Physical)Single Correct OptionHard
Aromatic Compounds
Scoring Scheme: +3 Full Marks • -1 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q30] In a detailed investigation of Electrophilic Aromatic Substitution with Directing Groups under Aromatic Compounds, consider the reacting mixture and mechanism:
Q31Paper 1Chemistry (Inorganic)Single Correct OptionMedium
Amines & Diazonium Salts
Scoring Scheme: +3 Full Marks • -1 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q31] In a detailed investigation of Sandmeyer Reaction vs Gattermann Synthesis Mechanisms under Amines & Diazonium Salts, consider the reacting mixture and mechanism:
Q32Paper 1Chemistry (Organic)Single Correct OptionHard
Biomolecules & Polymers
Scoring Scheme: +3 Full Marks • -1 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q32] In a detailed investigation of Mutarotation in Glucose & Peptide Linkage Conformation under Biomolecules & Polymers, consider the reacting mixture and mechanism:
Q33Paper 1Chemistry (Physical)Single Correct OptionMedium
Haloalkanes & Haloarenes
Scoring Scheme: +3 Full Marks • -1 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q33] In a detailed investigation of SN1 vs SN2 vs SNi Mechanisms with Stereochemical Inversion under Haloalkanes & Haloarenes, consider the reacting mixture and mechanism:
Q34Paper 1Chemistry (Organic)Single Correct OptionHard
Qualitative Inorganic Salt Analysis
Scoring Scheme: +3 Full Marks • -1 Negative Marks
[JEE Advanced 2019 Paper 1 Chemistry Q34] In a detailed investigation of Chromyl Chloride Test & Brown Ring Complex Formation under Qualitative Inorganic Salt Analysis, consider the reacting mixture and mechanism: