Tag: chemistry in daily life
Questions Related to chemistry in daily life
Which of the following statements is not correct about penicillin?
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Penicillin G has a narrow spectrum.
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It is extracted from antibacterial fungus Penicillium.
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Ampicillin and amoxycillin are synthetic modifications of penicillins.
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It has bacteriostatic effect.
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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.
Which statement about aspirin is not true?
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Aspirin belongs to narcotic analgesics.
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It is effective in relieving pain.
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It has antiblood clotting action.
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It is neurologically active drug.
Which of the following statements is not correct?
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Some antiseptics can be added to soaps.
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Dilute solutions of some disinfectants can be used as antiseptic.
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Disinfectants are antimicrobial drugs.
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Antiseptic medicines can be ingested.
- 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.
Which of the following is an example of a broad spectrum antibiotic?
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Penicillin G
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Chloramphenicol
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Streptomycin
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Ampicillin
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.
Which of the following is an insecticide?
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Aspirin
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Lindane
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DDT
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Both B and C
DDT (dichlorodiphenyltrichloroethane) is an organo chlorine insecticide, which is a colourless, crystalline solid, tasteless and almost odorless chemical compound.
Among the following statements, which one is not correct?
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Aspirin is both an analgesic and an antipyretic.
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Ampicillin is a natural antibiotic.
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Sulphadiazine is a synthetic antibacterial.
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Some disinfectants can be used as antiseptics
at low concentration.
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.
The class of drugs used for the treatment of cut or wound is:
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tranquilizers
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antiseptics
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antihistamins
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antipyretic
Antiseptics are applied to the living tissues such as wounds, cuts, ulcers and diseased skin surfaces.
Which of the following are synthetic antimicrobial chemicals, consumed by humans?
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Insulin
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Sulphadiazine
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Hydrochloric acid
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Penicillin
Sulphadiazine and penicillin are the synthetic antimicrobial chemicals consumed by humans. Insulin and hydrochloric acid are produced by the body.
It is found in such as which cause cholera and typhoid ?
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Nutrients
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Bacteria
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Inorganic impurities
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Other microbes
Cholera is caused by vibriocholerae bacteria and typhoid is caused by salmonella typhi bacteria.
Which of the following is used as antiseptic?
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Tincture of iodine
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Equanil
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Heroin
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Histamine
Antiseptics are antimicrobials applied to the living tissues such as wounds, cuts, ulcers and diseased skin surfaces.
Tincture of iodine is used as antiseptic on wounds.
Equanil is a tranquilizer.
Histamine is a antacid.
Heroin is a analgesic.