1. She came across a theory which states that the leadership style is effective dependent on the

A. Democratic
B. Authoritarian
C. Laissez faire
D. Bureaucratic

Correct answer: A

Rationale: The correct answer is A: "Democratic" because democratic leadership style is effective dependent on the participation and input of team members. In a democratic leadership style, decisions are made through discussion and consensus building, which can lead to higher levels of job satisfaction and productivity. Authoritarian leadership style emphasizes control and obedience, while laissez-faire leadership style lacks guidance and structure, and bureaucratic leadership style focuses on rules and regulations. Therefore, democratic leadership style is considered effective as it values the opinions and contributions of team members, leading to better outcomes and team cohesion.

2. "Ironic" and "serious" are:

A. synonyms (have the same meaning)
B. antonyms (have opposite meanings)
C. homonyms (sound the same but have different meanings)
D. none of the above

Correct answer: B

Rationale: "Ironic" means the opposite of "serious."

3. What happens when a protein unfolds?

A. Activation
B. Denaturation
C. Renaturation
D. Folding

Correct answer: B

Rationale: Rationale: - Activation (Option A) refers to the process of initiating or increasing the activity of a molecule, such as an enzyme. Protein unfolding does not involve activation. - Denaturation (Option B) is the correct answer. Denaturation refers to the process by which a protein loses its three-dimensional structure, leading to the disruption of its function. This can be caused by factors such as heat, pH changes, or chemicals. - Renaturation (Option C) is the process by which a denatured protein regains its native structure and function. Protein unfolding is the opposite of renaturation. - Folding (Option D) is the process by which a protein assumes its functional three-dimensional structure. Unfolding is the reverse process of folding, not folding itself.

4. How does the mass of an object affect its inertia?

A. Mass has no impact on inertia
B. Higher mass increases inertia
C. Higher mass decreases inertia
D. Mass influences gravitational force, not inertia

Correct answer: B

Rationale: Inertia is the resistance of an object to changes in its state of motion. The greater the mass of an object, the greater its inertia because it requires more force to change its state of motion. This is in line with Newton's first law of motion, which states that an object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an external force.

5. Which of the following is an example of a secondary alcohol?

A. Methanol
B. Ethanol
C. Isopropanol
D. Butanol

Correct answer: C

Rationale: Isopropanol is an example of a secondary alcohol, as the hydroxyl group is attached to a carbon atom that is bonded to two other carbon atoms. The other choices are primary alcohols.

6. Which of the following reagents can be used to convert a primary alcohol to an alkyl halide?

A. HI
B. H2O
C. NaOH
D. SOCl2

Correct answer: D

Rationale: The correct answer is D: SOCl2. SOCl2, also known as thionyl chloride, is commonly used to convert primary alcohols to alkyl halides through an SN2 mechanism. Thionyl chloride reacts with the alcohol to form an alkyl chloride, replacing the hydroxyl group. Option A, HI (hydroiodic acid), is typically used to convert alcohols to alkyl iodides, while option B, H2O (water), and option C, NaOH (sodium hydroxide), are not reagents suitable for this specific transformation. Therefore, SOCl2 is the most appropriate reagent for converting a primary alcohol to an alkyl halide.