Tag: chemistry

Questions Related to chemistry

Which of the following is a use of $Mg(OH) _2$?

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

  1. It is used in fire extinguisher as a foaming agent.

  2. It is used in the preparation of fertilizers.

  3. It is used in removing stains of grease from clothes.

  4. It is used as an antacid.

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Correct Option: D
Explanation:

$Mg(OH) _2$ is used as an antacid to neutralize the acidity in the stomach.

________ work by counteracting (neutralising) the acid in your stomach. 

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

  1. Disinfectants

  2. Antibiotics

  3. Antacids

  4. Anti-depressants

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Correct Option: C
Explanation:

Antacids neutralize the acid made by your stomach, curing various problems like heartburn, upset stomach, etc. Generally, they do not have any side effects.

Which of the following is an antacid?

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

  1. Rantidine

  2. Histamine

  3. Cimetidine

  4. All of the above

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Correct Option: D
Explanation:

An antacid is a substance which neutralizes stomach acidity, which in turn relieves heartburn, indigestion or stomach upset.
All of these are the examples of antacids.

Which of the following is an antihistamine?

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

  1. Brompheniramine

  2. Equanil

  3. Ranitidine

  4. Cimetidine

Show answer
Correct Option: A
Explanation:

Antihistamine is a drug that inhibits the physiological effects of histamine, used especially in the treatment of allergies.


Brompheniramine is an antihistamine.

Equanil is a tranquilizer.

Ranitidine and Cimetidine are antacids.

Hence the correct option is A.

Ranitidine is also called as:

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

  1. Zinetac

  2. Cimetidine

  3. Pepsin

  4. Histamine

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Correct Option: A
Explanation:

Ranitidine is also called as zinetac. It is an antihistamine.
It prevent the interaction between histamine and the receptors in the stomach wall, releasing less amount of acid.

Which of the following is an antihistamine?

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

  1. Brompheniramine

  2. Rantidine

  3. Cimetidine

  4. None of the above

Show answer
Correct Option: A
Explanation:

Antihistamine is a drug or other compound that inhibits the physiological effects of histamine, used especially in the treatment of allergies.
Brompheniramine is an antihistamine drug.
Rantidine and Cimetidine are antacids.

Equanil is a/an:

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

  1. tranqulizer

  2. antifertility drug

  3. artificial sweetner

  4. antihistaamine

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Correct Option: A
Explanation:

Equanil is a tranquilizer.
This medication is used short-term to treat symptoms of anxiety and nervousness. It acts on certain centers of the brain to help calm your nervous system which is same as tranquilizer which also have  a calming effect and eliminate both the physical and psychological effects on anxiety or fear.

The compound that causes general depressant action on the central nervous system belongs to the class of:

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

  1. tranquilizers

  2. analgesics

  3. antihistamines

  4. narcotic analgesics

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Correct Option: A
Explanation:

Tranquilizer, a drug that is used to reduce anxiety, fear, tension, agitation, and related state of mental disturbance. 

Tranquilizers act on central nervous system and thus causes depression of central nervous system.

Substances which are used to bring down the temperature in high fever condition, are called:

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

  1. antiseptics

  2. pyretics

  3. antibiotics

  4. antipyretics

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Correct Option: D
Explanation:

An Antipyretics is a type of medication that prevents or reduces fever by lowering body temperature from a raised state. 

Antiseptics and disinfectants either kill or prevent growth of microorganisms. Which of the following statements is not true?

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

  1. Chlorine and Iodine are used as strong disinfectants

  2. Dilute solutions of Boric acid and Hydrogen Peroxide are strong antiseptics

  3. Disinfectants harm the living tissues

  4. A 0.2% solution of phenol is an antiseptic while 1% solution acts as a disinfectant

Show answer
Correct Option: B
Explanation:

Antiseptic and disinfectants both either kill or prevent the growth of microorganisms. The main point of difference between these two is that the former (antiseptic) are used for living beings whereas disinfectants are not safe for living tissues.

A substance like phenol in its lower concentration (0.2%) behaves as antiseptic whereas in higher concentration (1%) as a disinfectant. 
Chlorine and iodine are strong disinfectants whereas dilute solutions of boric acid and hydrogen peroxide are mild antiseptic.