Tag: medicinal chemistry

Questions Related to medicinal chemistry

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.