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Home/ Chemistry/Chemistry MCQ with Answer Explanation : Drugs, Detergents and Food Additives.

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On: October 14, 2024 Posted in Chemistry, Education, Exam Comments: 0 Views: 993

Chemistry MCQ with Answer Explanation : Drugs, Detergents and Food Additives.

Here below some basic MCQ’s about “Drugs, Detergents and food Additives” with answer explanation for exam practice. Let’s check one by one which is given below.

1. Which of the following drugs is used to treat hypertension (high blood pressure)?

  • A. Ibuprofen
  • B. Diazepam
  • C. Atenolol
  • D. Paracetamol

Answer: C. Atenolol

Explanation:
Atenolol is a beta-blocker that is used to treat high blood pressure by slowing down the heart rate and reducing the force of the heartbeat, which helps to lower blood pressure. Ibuprofen is an anti-inflammatory drug, Diazepam is an anti-anxiety drug, and Paracetamol is an analgesic and antipyretic.

2. Which of the following is an example of an antiseptic?

  • A. Chloramphenicol
  • B. Phenol
  • C. Dettol
  • D. Penicillin

Answer: C. Dettol

Explanation:
Dettol contains chloroxylenol, which is an antiseptic. Antiseptics are applied to living tissues to prevent or reduce infection. Chloramphenicol and Penicillin are antibiotics, whereas phenol is a disinfectant used on non-living surfaces.

3. Which class of drugs is used as a sedative to treat insomnia?

  • A. Antipyretics
  • B. Antidepressants
  • C. Barbiturates
  • D. Antacids

Answer: C. Barbiturates

Explanation:
Barbiturates are sedative drugs that depress the central nervous system and are used to treat insomnia and anxiety. Antipyretics reduce fever, antidepressants are used to treat depression, and antacids neutralize stomach acid.

4. Which of the following detergents is an example of an anionic detergent?

  • A. Cetyltrimethylammonium chloride
  • B. Sodium lauryl sulfate
  • C. Polyethylene glycol
  • D. Glyceryl stearate

Answer: B. Sodium lauryl sulfate

Explanation:
Anionic detergents contain negatively charged (anionic) functional groups and are effective in removing dirt. Sodium lauryl sulfate is a common anionic detergent. Cetyltrimethylammonium chloride is a cationic detergent, and polyethylene glycol and glyceryl stearate are non-ionic compounds.

5. Which of the following food additives is used as a flavor enhancer?

  • A. Sodium benzoate
  • B. Aspartame
  • C. Monosodium glutamate (MSG)
  • D. Sodium citrate

Answer: C. Monosodium glutamate (MSG)

Explanation:
Monosodium glutamate (MSG) is a flavor enhancer commonly used in processed foods to enhance the taste of savory dishes. Sodium benzoate is a preservative, aspartame is an artificial sweetener, and sodium citrate is used as a preservative and acidity regulator.

6. Which of the following is a common preservative used in soft drinks?

  • A. Sodium benzoate
  • B. Sorbitol
  • C. Sodium chloride
  • D. Ammonium nitrate

Answer: A. Sodium benzoate

Explanation:
Sodium benzoate is widely used in soft drinks to prevent the growth of microbes. Sorbitol is a sugar alcohol used as a sweetener, sodium chloride is common salt, and ammonium nitrate is not a food additive.

7. Which of the following is an antipyretic drug?

  • A. Aspirin
  • B. Morphine
  • C. Diazepam
  • D. Ibuprofen

Answer: A. Aspirin

Explanation:
Aspirin is an antipyretic drug used to reduce fever. It also has analgesic and anti-inflammatory properties. Morphine is a strong opioid analgesic, Diazepam is used for anxiety, and Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID).

8. Which of the following compounds is a sweetening agent?

  • A. Saccharin
  • B. Formaldehyde
  • C. Benzoic acid
  • D. Citric acid

Answer: A. Saccharin

Explanation:
Saccharin is a non-caloric artificial sweetener that is used to sweeten food and beverages. Formaldehyde is a preservative, benzoic acid is an antimicrobial preservative, and citric acid is used as a flavoring and preservative.

9. Which of the following drugs is used for pain relief?

  • A. Lidocaine
  • B. Streptomycin
  • C. Tetracycline
  • D. Ampicillin

Answer: A. Lidocaine

Explanation:
Lidocaine is a local anesthetic used to relieve pain by numbing a specific area of the body. Streptomycin and tetracycline are antibiotics, and ampicillin is a broad-spectrum antibiotic.

10. Which of the following is a cationic detergent?

  • A. Sodium lauryl sulfate
  • B. Cetyltrimethylammonium bromide
  • C. Sodium stearate
  • D. Polyethylene glycol

Answer: B. Cetyltrimethylammonium bromide

Explanation:
Cationic detergents contain positively charged (cationic) groups. Cetyltrimethylammonium bromide is a common example. Sodium lauryl sulfate and sodium stearate are anionic detergents, and polyethylene glycol is non-ionic.

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