Q.1. Aromatic spirit of ammonia is -

1. Antidote
2. Expectorant
3. Respiratory stimulant
4. Astringent

Answer: (c) Respiratory stimulant
Explanation: Aromatic spirit of ammonia is a respiratory stimulant. It is used to treat or prevent fainting.

Q.2. Most widely used anticaries agent is-

1. sodium bicarbonate
2. sodium carbonate
3. sodium fluoride
4. acacia

Answer: (c) sodium fluoride
Explanation: Fluoride as sodium fluoride or stannous fluoride is used as anticaries agent.

Q.3. Acid-base theory was given by-

1. Lewis
2. Hamilton
3. John
4. Raman

Answer: (a) Lewis
Explanation: Acid-base theory was given by Gilbert N Lewis.

Q.4. Caustic soda is synonym of-

1. NaOH
2. HCl
3. CaCO₇
4. I₂

Answer: (a) NaOH
Explanation: Caustic soda is synonym for sodium hydroxide (NaOH).

Q.5. Hydrochloric Acid (HCl ) is used in-

1. Diarrhea
2. Hyperacidity
3. Achlorhydria
4. Fever

Answer: (c) Achlorhydria
Explanation: HCl is used in acid deficiency achlorhydria.

Q.6. The colour of the cylinder of nitrous oxide is-

1. Red
2. Blue
3. Black
4. Orange

Answer: (b) Blue
Explanation: Nitrous oxide (laughing gas) is used as anesthatic agent in dentistry and supplied in blue coloured cylinders.

Q.7. A gas used for fumigation is-

1. Nitrogen oxide
2. Ethylene
3. Oxygen
4. Sulphur dioxide

Answer: (d) Sulphur dioxide
Explanation: sulphure dioxide (SO₂) is a fumigating gas.

Q.8. Antimony potassium tartarate is used as-

1. Antidote
2. Emetic
3. Astringent
4. Buffer

Answer: (b) Emetic
Explanation: Emetics are used to induce vomiting. Antimony potassium tartarate syrup of Ipecac and CuSO₄ are used as emetics.

Q.9. Amchlor is a synonym of-

1. Ammonium chloride
2. Sodium chloride
3. Potassium chloride
4. Ammonium hydroxide

Answer: (a) Ammonium chloride
Explanation: Ammonium chloride is also known as Amchlor, used as diuretic and expectorant.

Q.10. Iodine dissolves in water with the addition of-

1. Sodium chloride
2. Sulphur
3. Potassium iodide
4. Calcium carbonate

Answer: (c) Potassium iodide
Explanation: potassium Iodide (KI) forms KI₃ (polyiodides) with I₂. KI₃ is soluble in water.

Q.11. Antidote used in Cyanide poisoning is-

1. Sodium chloride
2. Potassium iodide
3. sodium thiosulphate
4. sodium bicarbonate

Answer: (c) sodium thiosulphate
Explanation: sodium thiosulphate, amyl nitrite, sodium nitrite etc. are used in cyanide poisoning.

Q.12. Unit of measurement of radioactivity is-

1. Curie
2. Cm
3. Litre
4. Gm

Answer: (a) Curie
Explanation: The unit of radioactivity is Curie and BcQurel.

Q.13. Which of the following particles have no charge and mass?

1. α- particles
2. β-particles
3. γ-particles
4. All of the above

Answer: (c) γ-particles
Explanation: γ particles have no charge and mass. They have lowest ionising power among the three particles.

Q.14. Milk of magnesia is a common name for-

1. Suspension of magnesium oxide
2. suspension of magnesium hydroxide
3. suspension of magnesium carbonate
4. none of the above

Answer: (b) suspension of magnesium hydroxide
Explanation: suspension of magnesium hydroxide is known as milk of magnesia. It is used as laxative and antacid.

Q.15. Epsom salt is-

1. Sodium sulphate
2. Potassium sulphate
3. Magnesium sulphate
4. none of the above

Answer: (c) Magnesium sulphate
Explanation: Magnesium sulphate is commonly known as epsom salt. It is used both externallyas in aches and pains and internally as saline laxative.

Q.16. Brine is a concentrated solution of-

1. sodium hydroxide
2. sodium chloride
3. Potassium chloride
4. Potassium carbonate

Answer: (b) sodium chloride
Explanation: Solution of table salt is known as Brine.

Q.17. Tincture of iodine is -

1. Strong iodine solution
2. weak iodine solution
3. Aqueous iodine solution
4. none of the above

Answer: (b) weak iodine solution
Explanation: Tincture of iodine (2 - 7%) is an antiseptic. It is also called weak iodine solution.

Q.18. Ammonium chloride is dried by-

1. Heating to constant weight
2. Keeping in air
3. Drying over desicant
4. All of the above

Answer: (c) Drying over desicant
Explanation: ammonium chloride is dried over a desicant. Direct heating decomposes ammonium chloride to ammonia and HCl.

Q.19. Which one of these is used to treat dandruff?

1. Sulphur
2. Selenium sulphide
3. yellow mercuric oxide
4. none of the above

Answer: (b) Selenium sulphide
Explanation: Selenium sulphide is used as antifungal agent in treating dandruff.

Q.20. Alum is added to bacterial toxins and toxoids to-

1. increase activity
2. precipitation of protein
3. Reduce toxicity
4. none of the above

Answer: (a) increase activity
Explanation: Alum is used in vaccines to increase the activity.

Q.21. What is calamine?

1. Zinc oxide
2. Zinc oxide with traces of magnesium oxide
3. Zinc oxide with traces of ferric oxide
4. Zinc carbonate

Answer: (c) Zinc oxide with traces of ferric oxide
Explanation: Calamine is a mixture of zinc oxide with 0.5% ferric oxide. It is used as anti-pruritic agent.

Q.22. Which one of these is a major cation in intracellular fluid?

1. Potassium
2. Sodium
3. magnesium
4. calcium

Answer: (a) Potassium
Explanation: Potassium is a major intracellular cation and sodium is a major extracellular cation.

Q.23. Titrant used in the assay of ferrous sulphate I.P.1996 is-

1. Potassium parmangnate
2. cerric ammonium sulphate
3. sulphuric acid
4. none of the above

Answer: (b) cerric ammonium sulphate
Explanation: Ferrous sulphate is assayed with cerric ammonium sulphate (redox titration I.P. 1996).

Q.24. The lead acetate cotton wool is used in limit test for arsenic to-

1. Make the arsine gas
2. Develop the yellow colour
3. Trap the hydrogen sulphide gas
4. none of the above

Answer: (c) Trap the hydrogen sulphide gas
Explanation: Lead acetate wool or paper are used to trap hydrogen sulphide gas which may be involved along with arsine gas. The hydrogen sulphide gas also react with mercuric chloride paper to give yellow colour.

Q.25. Limit tests are performed in-

1. Flask
2. Test Tube
3. Nesslar cylinder
4. none of the above

Answer: (c) Nesslar cylinder
Explanation: Nesslar cylinder also known as colour comprison cylinders are used to perform limit tests.

Q.26. Silver nitrate should be stored in-

1. clean, dry white bottles
2. lead free white bottle
3. amber colourd bottle
4. neutral glass bottle

Answer: (c) amber colourd bottle
Explanation: Silver nitrate should be protected from light. So must be stored in amber coloured bottles.

Q.27. The drug commonly used to prevent sepsis in severe burn cases is-

1. sulfamethoxazole
2. silversulphadiazine
3. Salazopyrine
4. Sulfadiamidine

Answer: (b) silversulphadiazine
Explanation: Silver sulphadiazine (silvadine) is a topical antibacterial used as topical cream or burns (antiseptic cream).

Q.28. Which of the following is used as cryotherepeutic agent?

1. Calcium carbide
2. Liquid nitrogen
3. calcium cyanamide
4. sodium nitrite

Answer: (b) Liquid nitrogen
Explanation: Liquid nitrogen is used as cryotherapeutic agent for removing malignant skin lesions such as warts and keratosis.

Q.29. which of the following is used in the eye treatment in minor infections?

1. Ammoniated mercury
2. Yellow mercuric oxide
3. Potassium permangnate
4. none of the above

Answer: (b) Yellow mercuric oxide
Explanation: a very low concentration of HgO is used in eye infections.

Q.30. which of the following is used as Rust inhibitor?

1. Sodium nitrite
2. liquid nitrogen
3. Calcium carbide
4. sodium thiosulphate

Answer: (a) Sodium nitrite
Explanation: sodium nitrite is an effective rust inhibitor and is used as an additive in industrial greases.