Tag: therapeutic action of different classes of drugs

Questions Related to therapeutic action of different classes of drugs

Reactive dyes utilize a _________ attached to a substituent that is capable of directly reacting with the fibre substrate.

chemistry medicinal chemistry antacids and antihistamines therapeutic action of different classes of drugs ph regulation of the stomach

  1. chromophore

  2. auxochrome

  3. chlorophyll

  4. none of the above

Show answer
Correct Option: A
Explanation:

Reactive dyes utilize a chromophore attached to a substituent that is capable of directly reacting with the fiber substrate. The covalent bonds that attach the reactive dye to natural fibers make them among the most permanent of dyes. 'Cold' reactive dyes, such as Procion MX, Cibacron F, and Drimarene K, are very easy to use because the dye can be applied at room temperature. Reactive dyes are by far the best choice for dyeing cotton and other cellulose fibers at home or in the art studio.

Hence option $A$ is correct.

Dispersed dye was originally developed for the dyeing of cellulose acetate,
and are water-insoluble this dye is mainly used to dye:

chemistry medicinal chemistry antacids and antihistamines therapeutic action of different classes of drugs ph regulation of the stomach

  1. nylon

  2. polyster

  3. both A and B

  4. wool

Show answer
Correct Option: B,C
Explanation:

Dispersed dyes were originally developed for the dyeing of cellulose acetate and are water-insoluble. The dyes are finely ground in the presence of a
dispersing agent and sold as a paste, or spray-dried and sold as a
powder. Their main use is to dye polyester but they can also be used to dye nylon.
Hence option C is correct.

Assertion : Penicillin (G) is an antihistamine.


Reason: Penicillin (G) is effective against gram-positive bacteria.

Read the above assertion and reason and choose the correct option regarding it.

chemistry medicinal chemistry antacids and antihistamines therapeutic action of different classes of drugs ph regulation of the stomach

  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

  3. Both Assertion and Reason are incorrect

  4. Assertion is correct but Reason is incorrect

  5. Assertion is incorrect but Reason is correct

Show answer
Correct Option: E
Explanation:

The assertion that Penicillin (G) is an antihistamine is incorrect. Penicillin (G) is an antibiotic. It is a narrow spectrum antibiotic. Hence it effective against both gram positive as well as Gram negative bacteria. Therefore, the Reason is correct.
Hence, option E is the right answer.

What is tincture of iodine?

chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

  1. 2-3% solution of iodine in alcohol-water mixture.

  2. A mixture of iodine in chloroxylenol.

  3. A mixture of 0.2% phenol and 2-3% iodine in water.

  4. 2-3% solution of iodine in potassium iodide.

Show answer
Correct Option: A
Explanation:

2-3% solution of iodine in alcohol-water mixture is known as tincture of iodine. It is a powerful antiseptic.

Which of the following statements is not correct?

chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

  1. Antiseptics can be safely applied to the living tissues.

  2. Antiseptics can be incorporated into deodorants, face powders and soaps.

  3. Disinfectants can also be applied to the skin safely.

  4. A very dilute solution of a few disinfectants can be used as antiseptics.

Show answer
Correct Option: C
Explanation:

Disinfectants are harmful to the living tissues hence they are not applied to the skin.

Antiseptic chloroxylenol is:

chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

  1. $4$ - chloro $3, 5 $ - dimethylphenol

  2. $3$ - chloro $3, 5 $ - dimethylphenol

  3. $4$ - chloro $2, 5 $ - dimethylphenol

  4. $5$ - chloro $3, 4 $ - dimethylphenol

Show answer
Correct Option: A
Explanation:

Chloroxylenol also known as para-chloro-meta-xylenol (PCMX), is an antiseptic and disinfectant agent used for skin disinfection and cleaning surgical instruments. Its chemical names are given as 4-Chloro-3,5-dimethylphenol.

The formulation of dettol contains:

chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

  1. chloroxylenol

  2. terpineol

  3. Isopropyl alcohol

  4. all of these.

Show answer
Correct Option: D
Explanation:

Dettol contains Chloroxylenol (comprises of 4.8% of dettol's total admixture) which is an antiseptic and disinfectant used for skin disinfection and cleaning surgical instruments, Terpineol which is a monoterpene alcohol that has been isolated from variety of sources such as cajuput oil, pine oil, and petotgrain oil. and isopropyl alcohol.

A drug which is effective in curing malaria is:

chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

  1. aspirin.

  2. quinine.

  3. morphine.

  4. analgin.

Show answer
Correct Option: B
Explanation:
  • An antimicrobial tends to destroy/prevent development or inhibit the pathogenic action of microbes such as bacteria (antibacterial drugs), fungi (antifungal agents), virus (antiviral agents), or other parasites (antiparasitic drugs) selectively.
  • Malaria is a viral disease and caused by female anopheles mosquito. The drugs which are used to cure malaria are quinine,,Hydroxychloroquine Mefloquine etc.

Which of the following can be used as an analgesic without causing addiction?

chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

  1. Morphine

  2. Aspirin

  3. Heroin

  4. Codeine

Show answer
Correct Option: B
Explanation:
Analgesics reduce or abolish pain without causing impairment of
consciousness, mental confusion, incoordination or paralysis or some
other disturbances of nervous system
Aspirin and paracetamol belong to the class of non-narcotic (non-addictive) analgesics. Aspirin inhibits the synthesis of chemicals known as prostaglandins which stimulate inflammation in the tissue and cause pain. These drugs are effective in relieving skeletal pain such as that due to arthritis. These drugs have many other effects such as reducing fever (antipyretic) and preventing platelet coagulation. Because of its anti blood clotting action, aspirin finds use in prevention of heart attacks.
Morphine,Heroin,Codeine belongs to narcotic(addictive) analgesics.

Which of the following antibiotics is bactericidal?

chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

  1. Erythromycin

  2. Tetracycline

  3. Penicillin

  4. Chloramphenicol

Show answer
Correct Option: C
Explanation:
  • An antibiotic refers to a substance produced wholly or partly by chemical synthesis, which in low concentrations inhibits the growth or destroys microorganisms by intervening in their metabolic processes.
  • Antibiotics have either cidal (killing) effect or a static (inhibitory) effect on microbes.
  • Bactericidal-Penicillin,Aminoglycosides,Ofloxacin
  • Bacteriostatic-Erythromycin,Tetracycline,Chloramphenicol
  • Ampicillin and Amoxycillin are synthetic modifications of penicillins. These have broad spectrum. It is absolutely essential to test the patients for sensitivity (allergy) to penicillin before it is administered