Untitled Quiz

Organic Chemistry I - Introduction & Alkanes

• Course: Organic Chemistry I
• Topic: Introduction & Alkanes
• Content: Questions and answers related to organic chemistry concepts, particularly regarding alkanes.
• Questions Type: True or False statements about various organic chemistry topics.

Questions & Answers

• Question 1: The order of increasing electronegativity of halogens is F > Cl > Br > I.

• Answer: False

• Question 2: All metals are electropositive elements.

• Answer: True

• Question 3: The difference in electronegativity (EN) between atoms in a non-polar covalent bond is zero.

• Answer: True

• Question 4: Examples of -I effect atoms or groups include F, Cl, OH, NH2 etc.

• Answer: True

• Question 5: Mesomeric effect occurs in saturated systems.

• Answer: False

• Question 8: Carbanions are negatively charged species and Sp3 hybridized carbons.

• Answer: True

• Question 9: Alkyl groups exhibit +I effect.

• Answer: True

• Question 10: Inductive effect occurs via π bond orbital.

• Answer: False

• Question 11: In a non-polar covalent bond, the more electronegative atom acquires a partial negative charge.

• Answer: True

• Question 12: Van der Waals forces hold uncharged molecules together in liquids or solids.

• Answer: True

• Question 13: Organic Chemistry studies carbon compounds that affect all living things.

• Answer: True

• Question 14: EN is the ability of an atom to attract electrons.

• Answer: True

• Question 15: An ionic bond forms between atoms with a difference in EN less than 2.

• Answer: False

• Question 16: Electronegativity increases as you move down a group in the periodic table.

• Answer: False

• Question 17: The left column in the periodic table (Groups 1 & 2) are termed electronegative elements.

• Answer: False

• Question 18: The difference in EN between atoms in a polar covalent bond is zero.

• Answer: False

• Question 19: Examples of -I effect atoms include F, Cl, and alkyl groups.

• Answer: True

• Question 20: Inductive effect involves sigma bonds.

• Answer: True

• Question 21: Nucleophiles are electron-loving species.

• Answer: True

• Question 22: Carbanion stability follows the order: CH3 < RCH2 < R2CH < RC.

• Answer: True

• Question 23: Mesomeric effects can be transmitted through large conjugated systems.

• Answer: True

• Question 24: Free radical carbons are electrically neutral and highly reactive.

• Answer: True

• Question 25: In polar covalent bonds, the more electronegative atom gains a partial negative charge.

• Answer: True

• Question 26: Inductive effect depends on the electronegativity of atoms in the covalent bond.

• Answer: True

• Question 27: Electropositive elements exhibit -I effect.

• Answer: False

• Question 30: Nucleophiles attack carbons with high electron density.

• Answer: True

• Question 31: All halogens display -I effect.

• Answer: True

• Question 32: Mesomeric effect occurs in unsaturated molecules.

• Answer: True

• Question 34: Nucleophiles attack carbons with low electron density.

• Answer: True

• Question 35: Carbocations are positively charged species and are Sp3 hybridized.

• Answer: False

• Question 36: In heterolytic cleavage, each atom gains two electrons.

• Answer: False

• Question 37: Inductive effects are transmitted over short distances.

• Answer: True

• Question 38: Hydrogen bonds occur between a carbon atom and highly electronegative atoms (e.g., F, O, N).

• Answer: True

• Question 39: Electronegativity generally decreases across a period from left to right.

• Answer: False

• Question 40: Ionic bonds form between atoms with large differences in electronegativity (EN > 2).

• Answer: True

• Question 41: Electronegativity is the ability of an atom to attract electrons.

• Answer: True

• Question 43: Carbocation stability order: tertiary > secondary > primary.

• Answer: True

• Question 44: The bond angle for Sp3 hybridized carbons is 120 degrees.

• Answer: False

• Question 45: Free radical carbons are electrically neutral with low reactive species.

• Answer: True

• Question 46: In homolytic cleavage, each atom in the covalent bond gets one electron.

• Answer: False

• Question 47: Inductive effect occurs in unsaturated molecules.

• Answer: False

• Question 48: In polar covalent bonds, the less electronegative atom acquires a partial positive charge.

• Answer: True

• Question 49: Carbocations are positively charged species and are Sp2 hybridized.

• Answer: True

• Question 50: The bond angle for Sp2 hybridized carbons is 109.3 degrees.

• Answer: False

• Question 51: Electronegativity usually decreases down a group in the periodic table.

• Answer: True

• Question 52: The difference in EN between atoms in a polar covalent bond is greater than 2.

• Answer: False

IUPAC Nomenclature (Page 5)

• IUPAC names for various organic structures provided as example structures.

IUPAC Naming of Incorrect Structures (Page 6)

• Correction of incorrectly named organic structures, with the correct IUPAC names given as answers.

Drawing Organic Structures (Page 6 & 7)

• Step-by-step instructions to determine the structures for organic compounds.

Organic Reactions (Page 8 & 9):

• Summary of reaction types: Types of organic reactions (e.g., elimination, substitution, addition, free radical) and reaction conditions are shown with examples.

Stability of Organic Structures (Page 10):

• Stability of structures: Ranking organic structures in terms of their decreasing stability are provided.

Type Reaction: synthesis of Organic Molecules

• Methods: Details for synthesis methods of specific organic molecules (Corey-House, Wolf-Kishner, Clemmensen)