Explanation:

(Correct): Alcohols contain the hydroxyl (–OH) group.

• Carboxylic acid group.

• Aldehyde group.

• Amino group.

• Ketone group.

Simple past of “go” is went.

Explanation:

• Save life and prevent complications → Correct because survival and stabilization are priorities.

• Achieve cosmetic results → Incorrect because function and survival come first.

• Provide definitive reconstruction → Incorrect because this may be delayed.

• Reduce hospital stay → Incorrect because it is secondary.

• Avoid repeat surgery → Incorrect because staged procedures are often required.

Explanation:

• Sinoatrial node → Correct because it initiates electrical impulses of the heart.

• Atrioventricular node → Incorrect because it delays impulse conduction.

• Bundle of His → Incorrect because it conducts impulses to ventricles.

• Purkinje fibers → Incorrect because they distribute impulses in ventricles.

• Ventricular myocardium → Incorrect because it contracts but does not initiate rhythm.

Explanation:

• Fat embolism → Correct because it commonly follows long bone fractures.

• Infection → Incorrect because it occurs mainly in open fractures.

• Non-union → Incorrect because it is a late complication.

• Compartment syndrome → Incorrect because it is less common.

• Malunion → Incorrect because it occurs due to improper healing.

Explanation:

• Influenza virus → Correct because it is a single-stranded RNA virus.

• Adenovirus → Incorrect because it contains DNA.

• Herpes simplex virus → Incorrect because it is a DNA virus.

• Hepatitis B virus → Incorrect because it is a partially double-stranded DNA virus.

• Papillomavirus → Incorrect because it is a DNA virus.

Explanation:

• Epinephrine → Correct because it reverses airway edema, hypotension, and bronchospasm.

• Antihistamine → Incorrect because it is adjunctive therapy.

• Hydrocortisone → Incorrect because it has delayed onset.

• Salbutamol → Incorrect because it treats bronchospasm only.

• Atropine → Incorrect because it treats bradycardia.

Explanation:

• Permethrin → Correct because topical permethrin is first-line treatment.

• Fluconazole → Incorrect because it is antifungal.

• Ivermectin → Incorrect because it is alternative oral therapy.

• Acyclovir → Incorrect because it treats viral infections.

• Metronidazole → Incorrect because it treats anaerobic infections.

Compulsory = must do; opposite = optional.

Explanation:

• Distribution and determinants of health-related events → Correct because epidemiology studies frequency, patterns, and causes of disease in populations.

• Treatment of individual patients → Incorrect because this is clinical medicine.

• Laboratory diagnosis of disease → Incorrect because this is pathology.

• Drug actions in the body → Incorrect because this is pharmacology.

• Genetic inheritance patterns → Incorrect because this is genetics.