The part of the CPU that coordinates and manages all activities of scheduling and timing is

Correct Answer: A

Rationale: The CPU's control unit (CU) directs operations by managing task scheduling and timing, ensuring instructions are executed in sequence. 'Control Unit,' is correct because it fetches, decodes, and executes commands, coordinating the CPU's activities, as detailed in computer engineering texts (e.g., Patterson and Hennessy's Computer Organization). 'ALU' (Arithmetic Logic Unit), performs calculations and logic operations, not scheduling. 'Processor,' is the entire CPU, too broad to specify this role. 'Coordinator,' is not a standard CPU component. The CU's role as the traffic cop' of the processor, synchronizing data flow and instruction timing, distinguishes it from the ALU's computational focus or the processor's generality, making A the precise answer based on CPU architecture.

Correct Answer: B

Rationale: Frusemide (furosemide), a loop diuretic, affects fluid and electrolyte balance, leading to specific side effects. 'Hypotension,' is correct because it causes rapid fluid loss, reducing blood volume and pressure, as per clinical pharmacology (e.g., Brunton's Goodman & Gilman). 'Hyperchloraemia,' is false; frusemide causes hypochloremia via chloride loss. 'Hypermagnesia,' is incorrect; it leads to hypomagnesemia. 'Tearing,' is unrelated to diuretic effects. Hypotension's prevalence as a documented adverse effect, especially in overdose or dehydration, distinguishes B as the accurate answer, reflecting frusemide's mechanism.

Correct Answer: C

Rationale: Nitrous oxide (N2O) is an inhalation anesthetic with distinct properties. 'It is the only true gas,' is correct because it's stored as a gas at room temperature, unlike volatile liquids (e.g., sevoflurane), per anesthesiology texts (e.g., Barash). 'It cannot be used for rapid induction,' is false; it's quick-acting, though weak alone. 'It has an unpleasant odour,' is incorrect; it's odorless or slightly sweet. 'It is generally used as a volatile adjunct,' is true but less defining than its gaseous state. N2O's unique physical property as a true gas distinguishes C as the accurate answer.

Correct Answer: B

Rationale: Delimitation defines the study's boundaries, set by the researcher. 'Scope of the study,' is correct because it outlines what's included (e.g., population, time), per research texts (e.g., Creswell). 'Limitation of the study,' addresses constraints beyond control. 'Relevance of the study,' justifies importance. 'Objective of the study,' states goals. Scope's role in setting intentional limits—e.g., nurses in urban hospitals'—distinguishes B as the accurate answer.

Correct Answer: B

Rationale: The greater omentum, a peritoneal fold, lies anterior to the small intestine, draping over it. 'Anterior,' is correct, per anatomical positioning (e.g., Netter's Atlas). 'Posterior,' is incorrect; it's behind the stomach, not intestine. 'Superficial,' is vague but implies skin-level. 'Deep,' suggests below, not above. Anterior's directional accuracy makes B the precise answer.