Tuesday, 18 February 2014

GATE-1988 (Pharmaceutical Science)



Choose the correct answers.
1. To understand the drug receptor interaction it is necessary to quantify the relationship between
a) drug and its toxicity                                  b) drug and its absorption
c) drug and its biological effects                  d) drug and its metabolic product
Q.2 Penicillinase resistance penicillin is
a) Amoxicillin              b) Ampicillin               c) Penicillin V               d) Methicillin
Q.3 Morphine is present in
a) Atropa belladonna    b) Papaver somniferum      c) Ricinus communis     d) Solanum nigrum
Q.4 Ion exchange chromatography is the method of choice for the separation of
a) metals                    b) sugars                   c) Fatty acids                     d) Sterols
Q.5 Rideal-Walker test is performed by using the strain
a) Escherichia coli  b) Staphylococcus aureus  c) Streptococcus pyogenes  d) Salmonella typhi
Q.6 Pheniramine Malate is an antihistaminic agent belonging to class
a) Ethylenediamine derivatives                         b) Cyclic basic chain analogues
c) Aminoalkyl ether analogues                          d) none of these

Q.7 Tetracyclines undergoes epimerization at C-4 between pH 4 and 8 to give
a) Isotetracyclines    b) Epitetracyclines    c) Nortetracyclines     d) none of these
Q.8 Cimetidine inhibits gastric secretion as a result of
a) Inhibition of H1 receptors                          b) Inhibition of H2 receptors
c) Inhibition of nicotinic receptors                d) Inhibition of muscarnic receptors
Q.9 For film coating, the following ingredients are commonly used except
a) Povidone    b) polyethylene glycol    c) Carnauba wax    d) Hydroxypropylmethyl cellulose
Q.10 Tyndallisation means
a) Successive autoclaving with a bactericide   b) Successive heating with a bactericide
c) Successive heating at low temperature d) Successive autoclaving at low temperature and   
                                                                        incubation
Q.11 Morphine and heroin differ from each other in respect of
a) Methyl group on nitrogen                                        b) Acetyl group at C3 & C6
c) absence of double bond between C5 & C6              d) absence of D ring
Q.12 Vincristine and vinblastine act by
a) Binding with the protein tubulin and arrest at metaphase    b) Inhibiting the protein synthesis
c) Acting as antometabolite                                                       d) Inhibiting the enzyme system
Q.13 A rhamno-glucoside on complete hydrolysis will give
a) Aglycone + Fructose + Rhamanose                            b) Aglycone + Ribose + Rhamanose
c) Aglycone + Glucose + Rhamanose                             d) Fructose + Rhamanose
Q.14 The technique employed to study the insoluble film at oil-water interface is
a) Micellization     b) Deflocculation     c) Electrostatic balance     d) Film balance
Q.15 Gray baby syndrome is due to the indiscriminate use of
a) Streptomycin          b) Chloramphenicol              c) Penicillin                  d) Tetracycline
Q.16 N, N-dimethyl-(1-methyl-4-oxo-3, 3-diphenylhexyl)-ammonium chloride is chemical name for
a) Methadone hydrochloride                              b) α-prodine hydrochloride
c) Meperidine hydrochloride                              d) Darvon
Q.17 Sulponamide tragedy was due to its combination with
a) Penicillin            b) Streptomycin              c) Diethylene glycol                  d) Bicarbonate
Q.18 In the preparation of tablets, powdered medicaments are mixed by moistening
a) To reduce the total volume                  b) To increase adsorption
c) To increase adhesiveness                     d) To reduce inter-particulate friction
Q.19 One nanometer (nm) is equal to
a) 10-5 cm               b) 10-6 cm                     c) 10-7 cm               d) 10-8 cm
Q.20 Cholinergic receptor present on intestinal muscle is
a) H2-receptor        b) Muscarinic receptor         c) Nicotinic receptor         d) β-receptor
Q.21 Indicate the correct order of increasing eluent power of benzene, ether, chloroform and ethyl acetate
a) Chloroform < Benzene < Ethyl acetate < Ether
b) Benzene < Ether < Chloroform < Ethyl acetate
c) Ether < Chloroform < Ethyl acetate < Benzene
d) Ethyl acetate < Ether < Benzene < Chloroform
Q.22 Limulus test is rapid in vitro test for parenterals to detect the presence of
a) Particulate matter              b) Fungus                c) Pyrogens                d) Bacteria
Q.23 An essential requirement for the mobile phase in the HPLC is that
a) It must have constant flow rate with pulse less flow              b) It must be freshly distilled
c) It must be ran at 200C only                                                     d) It must flow with pulses
Q.24 Indian (Tinnevally) and African senna leaves differ from each other with respect to
a) Vein-islet number                   b) Stomatal index             c) Colour            d) all of the above
Q.25 3-Etherification of morphine molecule causes
a) Morphine antagonism                                      b) No change in activity    
c) Decrease of analgesic and addiction                d) Increase of analgesic and addiction
Q.26 Addition of electrolyte to a lyophilic sol may cause
a) Tyndall effect                b) Salting out                   c) Coagulation                     d) Dilution
Q.27 Salicin, a phenolic glycoside, on hydrolysis yields
a) Salicylic acid + Glucose                                  b) Phenol + Glucose
c) Salicyl alcohol + Glucose                                d) Salicyl aldehyde + Glucose
Q.28 Lignocaine hydrochloride is officially assayed by
a) Potentiometric titration                                 b) Acid base titration
 c) Complexometric titration                             d) Non aqueous titration
Q.29 In supra ventricular arrhythmia, Digoxin when supplemented with…… is dangerous
a) Quinidine                  b) Procaine                      c) Calcium                 d) Xylocaine
Q.30 Injection of insulin I.P. should be kept at pH between
a) 5 and 5.5               b) 3 and 3.5                  c) 7 and 7.5                d) 9 and 9.5
Q.31 Some adrenocorticoids are referred to as Δ-corticoids because of
a) High amount of Unsaturation in the molecule
b) Additional double bond in each ring A between Carbon 1 and 2
c) Presence of one double bond in each ring
d) presence of double bond in ring A
Q.32 The preservative used in the preparation of capsule is
a) Beta naphthol      b) Chorocresol           c) Chloroxylenol           d) Phenyl mercuric nitrate
Q.33 In radioactive pharmaceuticals, half life (t1/2) of compound means
a) The time taken for one of the compound to bind with serum albumin
b) The time taken for onset of its action
c) The time taken for the activity to decay to one-half of its initial value
d) The time taken for its complete metabolism
Q.34 Wagner’s test is used to detect the presence of
a) Steroids               b) Alkaloids                 c) Glycosides            d) Terpenoids
Q.35 Metronidazole inhibits anaerobic bacteria and protozoan by
a) Affecting the structure of DNA molecule of the organism     b) Destroying the ribosomes
c) inhibiting the cytochrome system                                            d) Inhibiting the protein synthesis
Q.36 Most common estrogen/progesterone preparations used as oral contraceptive agent contains
a) Mestranol + Progesterone                                b) Estrone + progesterone
c) Diethyl stilbestrol + Norgestrel                        d) Ethinyl estradiol + Norethindrone
Q.37 Peripheral neurotransmitter is
a) Histamine             b) Noradrenaline               c) Hydroxytriptamine            d) Prostaglandin
Q.38 Beer’s Law states that
a) Absorbance of a solution is indirectly proportional to the concentration of the absorbing solute b) Absorbance of a solution is indirectly proportional to the length of the cell
c) Absorbance of a solution is directly proportional to the concentration of the absorbing solute d) Transmittance of a solution is directly proportional to the absorbing solvent

(2) Q.1 Given below are the hypotensive agents. Match their mode of action (from a to e)
2.i.1 Minoxidil                             a) α-adreno receptor anatagonist
2.i.2 Prazosin                               b) β-adreno receptor anatagonist
2.i.3 α-methyl Dopa                     c) Forms α-methyl norepinephrine
2.i.4 Clonidine                             d) Direct action on blood vessel (vasodilatation)
                                                     e) Decrease sympathetic activity through brain
Q.2 Indicate from group a to e the correct compound for the given source
2.ii.1 Urginea maritima              a) Camphene
2.ii.2 Rheum Palmatum               b) Scilliroside
2.ii.3 Myristica fragrans             c) Emodine
2.ii.4 Claviceps purpurea            d) Atropine
                                                     e) Ergometrine
Q.3 Select the appropriate pH range from a to e for the following indicators
2.iii.1 Methyl red                             a) 1.2 – 2.8
2.iii.2 Bromothymol blue                b) 4.2 – 4.6
2.iii.3 Phenolphthalein                    c) 4.8 – 5.2
2.iii.4 Thymol blue                          d) 8.2 – 10.0
                                                         e) 6.0 – 7.6
Q.4 Given drugs and their schedules a to e. Match them correctly
2.iv.1 B-complex tablets                  a) Schedule C1
2.iv.2 Calcium gluconate injection         b) Schedule F
2.iv.3 Small pox vaccine                         c) Schedule H
2.iv.4 Ampicillin capsules                       d) Schedule L
                                                                 e) Schedule C
Q.5 Given below are the antibacterial agents and probable mode of action (a to d).
2.v.1 Gentamycin                     a) Inhibits the mycolic acid synthesis
2.v.2 Isoniazid                          b) Prevents the bacterial cell wall synthesis
2.v.3 Polymixin B                     c) Binds with 30 S ribosomal sub-unit (takes false amino acid)
2.v.4 Penicillin                         d) Destroy the nucleic acid
Q.6 Match the given ingredients from a to e with the purpose for it is incorporated in the
formulation of tablets.
2.vi.1 Glident                           a) Starch
2.vi.2 Diluent                           b) Stearic acid
2.vi.3 Adherent                        c) Talc
2.vi.4 Disintegrant                   d) Lactose
                                                 e) Acacia
Q.7 Match the given heterocyclic ring given with their compounds
2.vii.1 Glutethemide                      a) Imidazoline ring
2.vii.2 Clonidine                            b) Piperidine ring
2.vii.3 Ketoconazole                      c) Indene ring
2.vii.4 Sulindac                              d) 1, 3-dioxane ring
                                                        e) Indole ring
Q.8 Given blow are the aliments and the drugs used (a to e). Match them correctly.
2.viii.1 Parkinson’s disease                 a) Probenecid
2.viii.2 Glaucoma                                b) Ampicillin
2.viii.3 Gout                                        c) Nitroglycerine
2.viii.4 Angina                                    d) Pilocarpine
                                                             e) Levodopa
Q.9 Given below are the equipments used in manufacturing of powder and their purposes
(a to e). Match them correctly
2.ix.1 Coulter counter                   a) To determine the total surface
2.ix.2 Sorptometer                         b) To determine the particle size
2.ix.3 Andreasen apparatus           c) To determine the flow rate
2.ix.4 Shear box                             d) To determine sedimentation rate
                                                        e) To determine the cohesiveness
Q.10 Match the following from a to e.
2.x.1 Photocell can be prevented from getting fatigue      a) By selecting excitation and visible  
                                                                                                wavelength
2.x.2 Resolving power of grating                                      b) By exposing to radiation for minimal
         can be increased                                                            possible time
2.x.3 Two different color compounds                  c) By increasing the number of lines per
          can be analyzed                                              mm/using high order
2.x.4 λmax can be found                                 d) After separation/using binary component system
                                                                        e) By finding the absorbance at each wavelength
Q.11 Choose the appropriate drug from a to e for following categories:
2.xi.1 Alkylating agent               a) Colchicine
2.xi.2 Carcinogen                        b) 6-mercaptopurine
2.xi.3 Antimitotic agent              c) Cyclopentamine
2.xi.4 Antimetabolite                  d) Thio-TEPA
                                                     e) Aflotoxin-B1
Q.12 Choose the correct synonymous words a to e for the given type of stomata
2.xii.1 Anomocytic                         a) Caryophyllaceous
2.xii.2 Anisocytic                           b) Rubiaceous
2.xii.3 Diacytic                               c) Ranunculaceaus
2.xii.4 Paracytic                              d) Solanaceous
                                                         e) Cruciferous
Q.13 Given below are the drugs and their antagonists (a to e). Match them correctly.
2.xiii.1 5-HT1                       a) Bemegride
2.xiii.2 Codeine                     b) Atropine
2.xiii.3 Phenobarbitone          c) Cyperoheptadine
2.xiii.4 Muscarine                  d) Naloxone
                                                e) Pyridoxine
Q.14 Select the appropriate color from a to e for the given wave length
2.xiv.1 450 – 480 nm               a) Green
2.xiv.2 500 – 560 nm               b) Yellow
2.xiv.3 574 – 590 nm               c) Blue
2.xiv.4 625 – 750 nm               d) Orange
                                                 e) Red
Q.15 Match the solubility range from a to e as per I.P. with following.
2.xv.1 Freely soluble           a) Less than 1 part
2.xv.2 Soluble                      b) 1 to 10 parts
2.xv.3 Sparingly soluble      c) 10 to 30 parts
2.xv.4 Slightly soluble         d) 30 to 100 parts
                                              e) 100 to 1000 parts
Q.16 Given below are the drugs and their enzymes (a to e) inhibited by them.
2.xvi.1 Physostigmine                      a) COMT
2.xvi.2 Imipramine                           b) Acetaldehyde dehydrogenase
2.xvi.3 Pyrogallol                             c) Carbonic anhydrase
2.xvi.4 Disulfiram                            d) Cholinesterase
                                                         e) MAO
Q.17 According drug and cosmetic rules a list of schedules are given and match the
appropriate statement with them
2.xvii.1 Schedule P                  a) Drugs used under medical supervision
2.xvii.2 Schedule W                b) Drugs marketed under generic name only
2.xvii.3 Schedule N                 c) Minimum equipments needed for retail pharmacy
2.xvii.4 Schedule J                  d) Disease that a drug should not claim to cure
                                                 e) Life period of drugs
Q.18 Given below are the drugs and their structural moiety a to e responsible for the
biological action. Match them correctly.
2.xviii.1 Diphenhydramine                  a) Lactone ring
2.xviii.2 Acetylcholine                         b) Substitution at C5 of barbituric acid
2.xviii.3 Penicillin                                c) Onium group
2.xviii.4 Gardinal                                 d) Beta lactam ring
                                                              e) 2-aminomethyl side chain
Q.19 Given below are the diuretics and their possible mode of action a to e.
2.xix.1 Acetazolamide               a) Affecting the osmosis
2.xix.2 Furosemide                     b) Inhibits the active transport of Cl- at ascending loop of Henle
2.xix.3 Triamterene                    c) Inhibits the reabsorption of Na+ in mineralo corticoid
                                                        dependent portion  of renal tubule
2.xix.4 Mannitol                          d) Carbonic anhydrase inhibitor
                                                     e) Causing acidosis
Q.20 Match the biological activity a to e for the following compounds.
2.xx.1 4, 5-di-(hydroxymethyl) -3-hydroxy)-2-methyl pyridine        a) Sympathomimetic
2.xx.2 (3-dibutyraminopropyl)-4-aminobenzoate                               b) CNS stimulant
2.xx.3 2-hydroxy-2-(3’, 4’-dihydroxyphenyl)-ethylamine                  c) Sedative/hypnotics
2.xx.4 1-methyl-2phenylethylamine                                                    d) Vit. B6
                                                                                                             e) Local anesthetic
Answer Key-1988 (Multiple Choice)
1.c 2.d 3.b 4.a 5.d 6.d 7.b 8.b 9.c 10.c 11.b 12.a 13.c 14.d 15.b 16.a 17.a 18.c 19.c 20.b 21.b 22.c 23.a 24.d 25.c 26.b 27.c 28.d 29.a 30.a 31.a 32.b 33.c 34.b 35.a 36.d 37.b 38.c
Match the column
1. (1) d (2) a (3) c (4) e                      2. (1) b (2) c (3) a (4) e                  3. (1) b (2) e (3) d (4) a     
4. (1) a (2) b (3) e (4) c                      5. (1) c (2) a (3) d (4) b                  6. (1) c (2) d (3) e (4) a
7. (1) b (2) a (3) d (4) c                      8. (1) e (2) d (3) a (4) c                  9. (1) b (2) a (3) d (4) c           10. (1) b (2) c (3) d (4) e                   11. (1) d (2) e (3) a (4) b                12. (1) c (2) e (3) a (4) b
13. (1) c (2) d (3) a (4) b                  14. (1) c (2) a (3) b (4) e                  15. (1) b (2) c (3) d (4) e          16. (1) d (2) e (3) a (4) b                  17. (1) e (2) b (3) c (4) d                  18. (1) e (2) c (3) d (4) b
19. (1) d (2) b (3) c (4) a                  20. (1) d (2) e (3) a (4) b

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