Indicate the antipsychotic drug ,which is a thioxanthene derivative:

Correct Answer: D

Rationale: The correct answer is D: Thiothixene. Thiothixene is a thioxanthene derivative due to its chemical structure containing a thioxanthene ring system. Haloperidol, Clozapine, and Chlorpromazine are not thioxanthene derivatives. Haloperidol is a butyrophenone, Clozapine is a dibenzodiazepine, and Chlorpromazine is a phenothiazine. Therefore, the correct choice is D as it is the only antipsychotic drug among the options that belongs to the thioxanthene class based on its chemical structure.

Correct Answer: B

Rationale: The correct answer is B: Clordiazepoxide. Benzodiazepines are a class of anxiolytic drugs known for their sedative and anxiolytic properties. Clordiazepoxide is a benzodiazepine derivative due to its chemical structure containing a benzene ring fused to a diazepine ring. This structure is characteristic of benzodiazepines and is responsible for their pharmacological effects. A: Buspirone is a non-benzodiazepine anxiolytic that works through a different mechanism by acting as a partial agonist at serotonin receptors. C: Meprobamate is a sedative-hypnotic drug that is structurally unrelated to benzodiazepines. D: Chloral hydrate is a sedative-hypnotic drug with a different chemical structure and mechanism of action compared to benzodiazepines.

Correct Answer: B

Rationale: The correct answer is B: Reddening of the conjunctiva. Cannabis intoxication often causes redness in the eyes due to vasodilation. This occurs because cannabis can lower blood pressure and increase blood flow to the eyes. This physiologic sign, known as "red eye," is a common characteristic of cannabis intoxication. Bradycardia (A) is not typically associated with cannabis use, as it can actually increase heart rate. Miosis (C) refers to constriction of the pupils, which is more commonly seen with opioid use. Nausea and vomiting (D) are possible side effects of cannabis use, but they are not as specific to cannabis intoxication as redness of the conjunctiva.

Correct Answer: C

Rationale: The correct answer is C: Sodium cromoglycate. Inhaled glucocorticoids are used for asthma and other respiratory conditions. Sodium cromoglycate is a mast cell stabilizer, not a glucocorticoid. Triamcinolone, beclometazone, and budesonide are all inhaled glucocorticoids commonly used to reduce inflammation in the airways. It is important to differentiate between glucocorticoids and other types of respiratory medications to ensure proper treatment.

Correct Answer: C

Rationale: The correct answer is choice C, Cyanocobalamin, as it contains a cobalt atom. Cyanocobalamin is a synthetic form of Vitamin B12, which is essential for various bodily functions. The cobalt atom is a crucial component of Vitamin B12's structure, playing a key role in its biological activity. Choice A, Folic acid, does not contain cobalt and is a B vitamin that is important for cell division and DNA synthesis. Choice B, Iron dextran, contains iron but not cobalt, and is used to treat iron deficiency anemia. Choice D, Ferrous gluconate, is an iron supplement and does not contain cobalt. In summary, Cyanocobalamin is the correct answer as it is the only option that contains a cobalt atom, while the other choices do not.