Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

3. Acids and Bases

Organic Chemistry Reactions

Organic Chemistry

3. Acids and Bases

Organic Chemistry Reactions

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Multiple Choice

Which of the following plant growth regulators is not produced commercially?

Gibberellins

Auxins

Brassinosteroids

Cytokinins

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Verified step by step guidance

Understand the role of plant growth regulators: Plant growth regulators (PGRs) are chemicals that influence the growth and differentiation of plant cells, tissues, and organs. They are crucial in agriculture and horticulture for controlling plant growth processes.

Identify the common plant growth regulators: The main classes of PGRs include Auxins, Gibberellins, Cytokinins, Ethylene, and Abscisic Acid. Each of these has specific roles in plant development.

Research the commercial production of PGRs: Auxins, Gibberellins, and Cytokinins are widely used in agriculture and are produced commercially. They are used to promote root growth, increase fruit size, and delay leaf senescence, among other applications.

Investigate Brassinosteroids: Brassinosteroids are a class of PGRs that are involved in a wide range of developmental processes in plants, including cell elongation and division, vascular differentiation, and stress responses. However, they are not as widely produced commercially as other PGRs.

Conclude which PGR is not produced commercially: Based on the information, Brassinosteroids are not produced commercially to the same extent as Auxins, Gibberellins, and Cytokinins, making them the correct answer to the problem.