Tag: therapeutic action of different classes of drugs

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

Antiseptic are the chemical which either ___orthe growth of microorganisms and are applied to the ___.

  1. kill, prevent, living tissues

  2. kill, prevent, non-living objects

  3. increase, decrease, living tissues

  4. kill, increase, non-living tissues
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Antiseptics are applied to the living tissues such as wounds, cuts, ulcers and diseased skin surfaces.
  • Antiseptics helps to kill or prevent the growth of microorganisms.
  • Examples are furacine, soframicine, etc. 
  • Commonly used antiseptic, dettol is a mixture of chloroxylenol and terpineol. Bithionol (the compound is also called bithional) is added to soaps to impart antiseptic properties. Iodine is a powerful antiseptic. 
  • Its 2-3 per cent solution in alcoholwater mixture is known as tincture of iodine. It is applied on wounds. 
  • Iodoform is also used as an antiseptic for wounds. 
  • Boric acid in dilute aqueous solution is weak antiseptic for eyes.
Multiple choice chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

Which of the following is not true about antifertility drugs? 

  1. Birth control pills contain a mixture of synthetic estrogen and progesterone derivatives.

  2. Both compounds i.e.estrogen and progesterone are vitamins.

  3. Progesterone is supposed to suppress ovulation.

  4. Norethindrone is an example of synthetic progesterone derivative.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Estrogen and progesterone are hormones.

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

The main constituents of dettol are:

  1. chloramphenicol and glycerol

  2. 2-3% solution of iodine in alcohol

  3. 0.2% solution of phenol

  4. chloroxylenol and terpineol
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Antiseptics are applied to the living tissues such as wounds, cuts, ulcers and diseased skin surfaces. Examples are furacine, soframicine etc. These are not ingested like antibiotics. Commonly used antiseptic, dettol is a mixture of chloroxylenol and terpineol.
Multiple choice chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

Which of the following statements is not correct about penicillin?

  1. Penicillin G has a narrow spectrum.

  2. It is extracted from antibacterial fungus Penicillium.

  3. Ampicillin and amoxycillin are synthetic modifications of penicillins.

  4. It has bacteriostatic effect.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • The real revolution in antibacterial therapy began with the discovery of Alexander Fleming in 1929, of the antibacterial properties of a Penicillium fungus. It is extracted from antibacterial fungus Penicillium.
  • Penicillin G has a narrow spectrum. 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.
  • Antibiotics have either cidal (killing) effect or a static (inhibitory) effect on microbes. Penicillin has Bactericidal effect.
Multiple choice chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

Which statement about aspirin is not true?

  1. Aspirin belongs to narcotic analgesics.

  2. It is effective in relieving pain.

  3. It has antiblood clotting action.

  4. It is neurologically active drug.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Aspirin belong to the class of non-narcotic analgesics. Aspirin inhibits the synthesis of chemicals known as prostaglandins which stimulate inflammation in the tissue and cause pain. It is effective in relieving skeletal pain such as that due to arthritis. It has 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. Aspirin is a neurologically active drug.
Multiple choice chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

Which of the following statements is not correct?

  1. Some antiseptics can be added to soaps.

  2. Dilute solutions of some disinfectants can be used as antiseptic.

  3. Disinfectants are antimicrobial drugs.

  4. Antiseptic medicines can be ingested.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Antiseptics are applied to the living tissues such as wounds, cuts, ulcers and diseased skin surfaces. These are not ingested like antibiotics.
  • Bithionol (also called bithional) is added to soaps to impart antiseptic properties.
  • Disinfectants are antimicrobial drugs which are applied to inanimate objects such as floors, drainage system, instruments, etc.
  • Same substances can act as an antiseptic as well as a disinfectant by varying the concentration. For example, 0.2 per cent solution of phenol is an antiseptic while its one per cent solution is disinfectant.
  • Hence, option D is the wrong option.
    Multiple choice chemistry chemistry in daily life antimicrobials and antifertility drugs therapeutic action of different classes of drugs drugs and their classification

    Which of the following is an example of a broad spectrum antibiotic?

    1. Penicillin G

    2. Chloramphenicol

    3. Streptomycin

    4. Ampicillin
    Reveal answer Fill a bubble to check yourself
    B,C,D Correct answer
    Explanation

    Since, Chloramphenicol functions by inhibiting bacterial protein synthesis, the drug chloramphenicol has a very broad spectrum of activity. It is active against gram-positive bacteria (including most strains of MRSA), gram-negative bacteria and anaerobes.

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

    Which of the following is an insecticide?

    1. Aspirin

    2. Lindane

    3. DDT

    4. Both B and C
    Reveal answer Fill a bubble to check yourself
    D Correct answer
    Explanation

    DDT (dichlorodiphenyltrichloroethane) is an organo chlorine insecticide, which is a colourless, crystalline solid, tasteless and almost odorless chemical compound. 

    Lindane is an organochlorine chemical variant of hexachlorocyclohexane, used as agricultural insecticide. 

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

    Among the following statements, which one is not correct?

    1. Aspirin is both an analgesic and an antipyretic.

    2. Ampicillin is a natural antibiotic.

    3. Sulphadiazine is a synthetic antibacterial.

    4. Some disinfectants can be used as antiseptics

      at low concentration.
    Reveal answer Fill a bubble to check yourself
    B Correct answer
    Explanation

    Ampicillin is a beta-lactum antibiotic that is part of the amino penicillin family and is roughly equivalent to its successor, amoxicillin in terms of spectrum and level of activity. It is not a natural antibiotic.