Drugs and Medicines Questions in English

(B) Tranquilizers are a class of chemical compounds used for the treatment of stress,and mild or even severe mental diseases. Examples include $Valium$,$Promethazine$,and $Equanil$. $Mifepristone$ is an anti-progestin used as an abortifacient,and $Naproxen$ is a non-steroidal anti-inflammatory drug $(NSAID)$. Therefore,both $Mifepristone$ and $Naproxen$ are not tranquilizers. However,in the context of standard multiple-choice questions where only one answer is expected,$Mifepristone$ is the most distinct non-tranquilizer.

(C) Paul Ehrlich developed the first effective treatment for syphilis,which is an arsenic-based compound known as $Salvarsan$ (also known as $Arsphenamine$ or $Ehrlich$ $606$).
It was the first modern chemotherapeutic agent used to treat syphilis.

(C) Tranquilizers are a class of chemical compounds used for the treatment of stress,and mild or even severe mental diseases. They induce a sense of well-being. Examples include Equanil,Veronal,and Luminal. Salvarsan is an antibiotic (specifically an antimicrobial agent) used for the treatment of syphilis,not a tranquilizer.

(A) Chloramine-$T$ is a chemical compound with the formula $CH_3C_6H_4SO_2NClNa$.
It acts as an antiseptic because it releases hypochlorous acid $(HOCl)$ in the presence of water,which kills microorganisms.

(B) $Bithionol$ is added to soaps to act as an antiseptic.
It helps in reducing the odor produced by bacterial decomposition of organic matter on the skin.

(B) The diseases caused by bacteria are $Pneumonia$ $(Streptococcus \ pneumoniae)$,$Dysentery$ ($Shigella$ species),$Tuberculosis$ $(Mycobacterium \ tuberculosis)$,and $Diphtheria$ $(Corynebacterium \ diphtheriae)$. However,in the context of standard biology and chemistry curricula,$Dysentery$ is often categorized as being caused by protozoa $(Entamoeba \ histolytica)$ or bacteria. Given the standard options,all listed diseases are typically associated with bacterial infections in basic textbooks. If this is a multiple-choice question where one must be selected,$Dysentery$ is the most common answer due to its frequent association with amoebic infection.

(B) Veronal is a derivative of barbituric acid. $Barbiturates$ are a class of drugs that act as central nervous system depressants. They are primarily used as $sedatives$ and $hypnotics$ to induce calmness or sleep.

(C) Chloroxylenol is a chemical compound that acts as an antiseptic and disinfectant.
It is the active ingredient in the common household antiseptic solution known as $Dettol$.
Therefore,the correct option is $C$.

(C) $BHC$ (Benzene hexachloride),also known as Gammexane or Lindane,is used as an insecticide.
$TNT$ is an explosive.
Bakelite is a thermosetting polymer.
Aspirin is an analgesic and antipyretic.

(A) Streptomycin is a well-known antibiotic used to treat various bacterial infections,including tuberculosis.
Therefore,it is classified as an antibiotic.

(C) The use of chemicals for therapeutic effect in the treatment of diseases is known as $Chemotherapy$. This involves the use of specific chemical substances to eliminate or inhibit the growth of disease-causing agents like bacteria,viruses,or cancer cells.

(D) Streptomycin is an antibiotic that is specifically effective against the bacteria $Mycobacterium \ tuberculosis$,which causes tuberculosis. Therefore,it is used in the treatment of this disease.

(C) Deodorants are substances applied to the body to prevent body odor caused by the bacterial breakdown of perspiration. $Bithionol$ (also known as $2,2'$-thiobis($4,6$-dichlorophenol)) is added to soaps and deodorants to reduce the odors produced by bacterial decomposition of organic matter on the skin.

(D) Narcotic drugs are those which produce sleep and unconsciousness. Morphine,Codeine,and Heroin are examples of narcotic analgesics. Aspirin is a non-narcotic analgesic,which acts by inhibiting the synthesis of chemicals known as prostaglandins which stimulate inflammation in the tissues and cause pain.

(A) Ampicillin is a synthetic modification of penicillin,not a natural antibiotic. Natural antibiotics are produced by microorganisms (e.g.,Penicillin $G$). Therefore,the statement that Ampicillin is a natural antibiotic is incorrect.

(A) Benzalkonium chloride is a quaternary ammonium salt,which acts as a cationic detergent.
It is widely used as an antiseptic in various pharmaceutical and personal care products.

(D) Paracetamol is chemically known as $N$-($4$-hydroxyphenyl)acetamide.
It is synthesized by the acetylation of $4$-aminophenol (also known as $p$-aminophenol) using acetic anhydride or acetyl chloride.
The reaction is:
$H_2N-C_6H_4-OH + (CH_3CO)_2O \rightarrow CH_3CONH-C_6H_4-OH + CH_3COOH$
Therefore,$4$-aminophenol is the correct starting material.

(B) $Terfenadine$ is a well-known drug used as an $Antihistamine$. It is used to treat allergic conditions like hay fever,urticaria,and other allergies by blocking the action of histamine in the body.

(A) Dettol is a well-known antiseptic. It is a mixture of $4-chloro-3,5-dimethylphenol$ (also known as chloroxylenol) and terpineol in a suitable solvent. Therefore,the correct option is $A$.

(A) Biodegradable detergents are those that can be easily decomposed by microorganisms. $Linear$ or $Normal$ alkyl chains are easily broken down by bacteria,whereas $Branched$ alkyl chains are resistant to bacterial attack and lead to non-biodegradable detergents. Therefore,biodegradable detergents possess a $Normal$ alkyl chain.

(A) Substances that are used to reduce fever (body temperature) are known as $Antipyretics$. Examples include $Paracetamol$ and $Aspirin$.

(B) The given structure is $2$-acetoxybenzoic acid,commonly known as $Aspirin$.
It acts as an analgesic (pain reliever) and an antipyretic (fever reducer).

(C) Saccharin is the first popular artificial sweetener. It is about $550$ times as sweet as cane sugar. Therefore,its sweetness value is $550$.

(D) The sweetness values (relative to sucrose) of the given artificial sweeteners are as follows:
$1$. $Alitame$: $2000$
$2$. $Sucralose$: $600$
$3$. $Saccharin$: $550$
$4$. $Aspartame$: $100$
Comparing these values,$Aspartame$ has the lowest sweetness value among the options provided.

(C) Antibiotics that kill or inhibit a wide range of Gram-positive and Gram-negative bacteria are known as broad-spectrum antibiotics. $Chloramphenicol$ is a well-known example of a broad-spectrum antibiotic. It is effective against a wide variety of microorganisms,including $Salmonella$ $typhi$,dysentery,acute fever,and certain urinary infections.

(C) Narcotics are drugs that produce sleep and relieve pain,such as morphine,codeine,and heroin (brown sugar).
$Diclofenac$ is a non-narcotic analgesic,which is used to reduce inflammation and pain without causing sleepiness or addiction.

(C) Disinfectants are chemical substances that kill or prevent the growth of microorganisms but are applied to inanimate objects. $Dettol$ is a well-known mixture of $chloroxylenol$ and $terpineol$,which acts as an effective disinfectant.

(D) $Bithionol$ (also known as $bithionol$ or $2,2'$-thiobis($4,6$-dichlorophenol)) is added to soaps to function as an antiseptic.
It helps in reducing the odor produced by bacterial decomposition of organic matter on the skin.

(C) Synthetic detergents are ammonium or sulphonate salts of long-chain carboxylic acids or hydrocarbons.
They consist of a long non-polar hydrocarbon chain and a polar hydrophilic head.
They are surface-active agents (surfactants) that lower the surface tension of water.
Many synthetic detergents are branched,which makes them non-biodegradable,leading to water pollution.
Option $C$ is incorrect because detergents are not derived from fatty acids in the same way soaps are; they are typically synthetic compounds like alkylbenzene sulphonates.

(A) Amoxicillin is a semi-synthetic derivative of $Penicillin$. It is a broad-spectrum antibiotic that belongs to the penicillin family of drugs.

(A) Tuberculosis is a bacterial disease caused by the bacterium $Mycobacterium \ tuberculosis$.
Dysentery can be caused by bacteria or amoeba.
Malaria is caused by a protozoan $(Plasmodium)$.
Syphilis is also a bacterial disease caused by $Treponema \ pallidum$.
However,in the context of standard chemistry/biology curriculum questions,Tuberculosis is the most commonly cited bacterial disease.

(C) Chloroquine is a well-known antimalarial drug used to treat and prevent malaria caused by mosquito bites.
It belongs to the class of $4-$aminoquinoline derivatives.
Therefore,the correct option is $C$.

(D) $Reserpine$ is a naturally occurring alkaloid obtained from the $Rauwolfia \text{ } serpentina$ plant.
It is widely used as a tranquilizer to treat high blood pressure and certain mental disorders.
It is also commercially known as $Serpasil$.
Therefore,the statement that '$Reserpine$ is not a tranquilizer' is false.

(B) The preparation of anionic detergents involves the reaction of long-chain alcohols with concentrated sulfuric acid $(H_2SO_4)$.
Specifically,lauryl alcohol $(CH_3(CH_2)_{10}CH_2OH)$ reacts with $H_2SO_4$ to form lauryl hydrogen sulfate.
This is then neutralized with sodium hydroxide $(NaOH)$ to produce sodium lauryl sulfate,which is a common anionic detergent.
The reaction is: $CH_3(CH_2)_{10}CH_2OH + H_2SO_4 \rightarrow CH_3(CH_2)_{10}CH_2OSO_3H + H_2O$.
Then,$CH_3(CH_2)_{10}CH_2OSO_3H + NaOH \rightarrow CH_3(CH_2)_{10}CH_2OSO_3^-Na^+ + H_2O$.

(C) An antibiotic is a substance produced by microorganisms that can inhibit the growth of or destroy other microorganisms. $Penicillin$ is a well-known antibiotic derived from the mold $Penicillium$ $notatum$.

(B) $2-\text{Acetoxybenzoic acid}$ is the chemical name for Aspirin. It is widely used as an analgesic and antipyretic.

(A) Soaps are the sodium or potassium salts of long-chain fatty acids.
For example,$C_{17}H_{35}COONa$ (Sodium stearate) is a common soap.
Option $A$ represents sodium stearate,which is a soap.

(D) Disinfectants are chemical substances that kill or prevent the growth of microorganisms but are toxic to living tissues. They are applied to inanimate objects like floors,drainage systems,and instruments. $0.2 \text{ percent}$ solution of phenol is an antiseptic,while its $1 \text{ percent}$ solution acts as a disinfectant.

(D) Tranquilizers are a class of chemical compounds used for the treatment of stress,and mild or even severe mental diseases. They induce a sense of well-being. Examples include derivatives of barbituric acid like $Veronal$,$Amytal$,$Nembutal$,$Luminal$,and $Seconal$. $Reserpine$ is also a well-known tranquilizer. $Piperazine$ is an anthelmintic drug used to treat parasitic worm infections,not a tranquilizer.

(A) $0.2 \%$ solution of $Phenol$ is used as an antiseptic,while $1 \%$ solution is used as a disinfectant. Among the given options,$Phenol$ is the correct substance known for its antiseptic properties.

(C) $Phenol$ is used as an antiseptic in such cases.

(A) Aspirin is chemically known as $2$-acetoxybenzoic acid,commonly referred to as $Acetylsalicylic \ acid$.
It is prepared by the acetylation of salicylic acid.

(D) Commercial detergents are primarily composed of sodium salts of long-chain alkyl hydrogen sulfates or alkyl benzene sulfonates.
Among the given options,$ROSO_3Na$ represents sodium alkyl sulfate,which is a common component of synthetic detergents.
Note: $RCOONa$ represents soap,not synthetic detergent.

(D) $ (d) $ Chloramphenicol is a broad-spectrum antibiotic.
It is effective against certain gram-positive and gram-negative bacteria,as well as some rickettsiae and viruses.
It is highly effective in the treatment of typhoid fever,meningitis,pneumonia,and whooping cough.

(D) $0.2 \%$ solution of phenol is an antiseptic while $1 \%$ solution of phenol is a disinfectant. Therefore,phenol can act as both.

(C) $Cocaine$ is a naturally occurring alkaloid that acts as a central nervous system stimulant. In medical practice,it is used as a local anesthetic to produce insensibility to pain and other sensations during surgical procedures.

(B) Penicillin is an antibiotic. It was the first antibiotic discovered by $A. \text{ Fleming}$ in $1929$ from the fungus $Penicillium \text{ } notatum$.

(A) Methyl salicylate,also known as oil of wintergreen,is used as the medicine Iodex in the treatment of rheumatic pains and as a remedy for aches,sprains,and bruises.