Tuesday 18 February 2014

GATE-1993 (Pharmaceutical Science)



1.Choose the correct answers.
Q.1 Triamicinolone is
a) 9α-Fluoro-16α-Hydroxyprednisolone              b) 9β- Fluoro-16α-Hydroxyprednisolone
c) 9α -Fluoro-16β -Hydroxyprednisolone             d) 9α -Bromo-16α-Hydroxyprednisolone
Q.2 Surfactants are characterized by the presence of
a) water solubilizing groups alone                                           b) fat solubilizing groups alone
c) water and fat solubilizing groups in same molecules          d) groups with positive charge
Q.3 Gamma-globulin is separated from serum by
a) agglutination               b) dialysis                  c) centrifugation                      d) salting out
Q.4 The stationary phase in thin layer chromatography is
a) liquid held between glass plate and silica gel   b) silica gel   c) glass plate d) none of the above
Q.5 Benzoyl peroxide is
a) an astringent            b) an emollient                  c) a preservative                    d) a keratolytic
Q.6 water for injection differs from sterile distilled water as it is free from
a) carbon di oxide                 b) pyrogens                   c) preservatives                 d) antioxidant
Q.7 The correct equivalent for -100C is
a) -100F                     b) +220F                      c) -180F                                    d) +140F
Q.8 The active metabolite of anti-cancer cyclophosphamide is
a) N-hydroxy cyclophosphamide                                     b) N-methyl cyclophosphamide
c) 4-hydroxy cyclophosphamide                                      d) N-acetyl cyclophosphamide

Q.9 Mebendazol, an anthelmintic drug has one group at 5-position in the benzimidazole
structure. It is
a) –S- CH2-CH2-CH2-CH3                 b) –S-Ph                    c) Ph-SO2-                   d) Ph-COQ.
10 Sedative action of barbiturates is due to substituents at C5. It is due to
a) high lipophilicity of groups at C5 position                   b) electron withdrawing effect
c) steric effect                                                                    d) metal chelation
Q.11Monoamine oxidase (MAO) inhibitors have serious side effects and toxicities. The
alternate drugs of choice are
a) tricyclic antidepressant   b) hallucinogens   c) amphetamines     d) xanthine alkaloids
Q.12 Sterility test for the materials meant for surgical suture requires incubation for
a) 7 days                     b) 14 days                     c) 21 days                              d) 20 days
Q.13 Silver-silver chloride electrode consists of
a) silver wire coated with calomel                       b) silver wire coated with potassium chloride
c) silver wire coated with silver chloride             d) platinum wire coated with silver chloride
Q.14 Extinction E =
a) log I0/I                            b) log T                       c) It/I0                 d) I0.10-cl
Q.15 Senna leaf I.P. consists of
a) dried leaflets of Cassia acutifolia and Cassia angustifolia
b) dried leaflets of Cassia indica                                        c) dried leaflets of Cassia carpinifolla
d) dried leaflets of Cassia carpinifolla and Cassia acutifolia
Q.16 Conformational isomerism is
a) cis-trans isomerism                b) optical isomer                           c) dextro-and laevo-rotatory
d) non-identical spatial arrangement of atoms in molecules resulting from rotation about one or more simple bonds.
Q.17 According to pH partition theory, a wealthy acidic drug will most likely be
absorbed from the stomach because the drug which exist, primarily in the
a) un-ionized, more lipid soluble form                     b) ionized, more water soluble in acid media
c) form of weak acid and more soluble in acid media
d) ionic form of the drug which facilitates diffusion
Q.18 Blood flow through a capillary is described by one of the following equations.
Choose the correct one.
a) Langmuir                  b) Noyes-Whitney                     c) Hildebrand                  d) Stokes
Q.19 Ionic mobility is denoted by
a) cm/sec                  b) degree Celcius/sec                c) mg/sec                        d) none of these

Q.20 A mixture of hydrochloric acid and acetic acid can be titrated satisfactorily by
a) potentiometry                b) conductometry                c) amperometry        d) spectrophotometry
2.Match the followings
Q.1 The drugs and their mechanisms of action are listed below. Match them correctly.
i) Ca2+ channel blockers                                          a) Terbutaline
ii) β2-selective bronchodilator                                  b) Diltiazem
iii) 5-HT antagonist                                                   c) Ranitidine
iv) H2-receptor antagonist                                         d) Cyperoheptadine
                                                                                    e) Omeperazole
Q.2 The injections mentioned below are usually sterilized by the process of a to e. Match
them correctly.
i) Hydrocortisone acetate inj.                           a) Sterilization by dry heat
ii) Morphine inj.                                               b) Sterilization by moist heat
iii) Paraldehyde inj.                                           c) Sterilization by filtration
iv) Phenol and glycerin inj.                               d) Sterilization by heating with bactericide
                                                                           e) Aspetic operation
Q.3 The side chain structure for the following drugs are given from a to e. Match them.
i) Primaquine                            a) –O-CH2-CH(OH)-CH2-NHCH(CH3)2
ii) Chloroquine                         b) –CH2-CH2-CH2-N(CH3)2
iii) Propranolol                         c) –NH-(CH3)CH-(CH2)3-NH2
iv) Tinidazole                           d) –CH2-CH2-SO2-C2H5
                                                  e) –NH-(CH3)CH-(CH2)3-N(C2H5)2
Q.4 The drugs mentioned below are assayed by the methods mentioned in a to e. Match
them correctly.
i) Sulphadiazine Tablets I.P.          a) Non aqueous titration with 0.1N perchloric acid using orcet      
                                                            blue   as indicator.
ii) Salbutamol sulphate I.P.            b) By measuring extinction at 444 nm
iii) Riboflavin tablets I.P.               c) A dilute sulphuric acid solution is titrated with 0.1 N
                                                           ceric ammonium sulphate using ferroin solution as indicator
iv) Ascorbic acid tablet I.P             d) Titrated with 0.5 N NaOH using phenol red as indicator
                                                         e) Acidification with HCl and with 0.1 M sodium nitrate
Q.5 The starting for the synthesis of drugs 1 to 4 are mentioned from a to e. Match them.
i) Thyroxine                                                a) 3-chloro acetyl phenol
ii) Phenylephrine                                         b) 4-chloro acetyl catechol
iii) Isoprenaline                                           c) Catechol
iv) Adrenaline                                             d) L-Tyrosine
                                                                      e) resorcinol
Q.6 Following are test organisms used for the I.P. microbiological assay of antibiotics.
Mach them correctly.
i) Rifampicin                                     a) Eschrechia coli
ii) Tetracycline                                  b) Klebsiella pneumonia
iii) Streptomycin                                c) Micrococcus luteus
iv) Chloramphenicol                          d) Bacillus subtilis
                                                            e) Bacillus cereus
Q.7 The following are the test animals or substances used for the biological assay of
preparations listed a to e. Match them correctly.
i) Mice                                      a) Vasopressin
ii) Albeno rats                          b) Diphtheria antitoxin
iii) Guinea pigs                         c) Insulin
iv) Sheep plasma                      d) Heparin sodium
                                                  e) Human antihaemophyllic fraction
Q.8 The active form of the enantiomer for the following drugs are given in a to e. Match
them correctly.
i) Ibuprofen                              a) S-isomer
ii) Ephedrine                            b) D-isomer
iii) Propranolol                         c) cis-isomer
iv) Ethambutol                         d) L-isomer
                                                  e) R-isomer
Q.9 The ingredients mentioned in a to e are used in various stages of sugar coating of
tablets. Match them correctly.
i) Seal coating                        a) Gelatin
ii) Sub coating                       b) Carnauba wax
iii) Syrup coating                   c) Methanol
iv) Polishing                          d) PEG 4000
                                               e) Cane sugar
Q.10 The drugs a to e are used as diuretics. Match them to their classes.
i) Osmotic diuretic                             a) Spironolactone
ii) Loop diuretics                               b) Isosorbide
iii) Potassium sparing diuretics          c) Merasalyl theophylline
iv) Organomercurials diuretics          d) Furosemide
                                                            e) Probenecid
Q.11 Following bacteria are classified based on their staining of antibiotics. Match them.
i) Clostridium tetani                   a) Gram-positive cocci
ii) Eschrechia coli                      b) Gram-positive bacilli
iii) Neisseria gonorrhoeae         c) gram-negative cocci
iv) Streptococcus pyogenes        d) Gram-negative bacilli
                                                     e) Gram-positive cocci

Q.12 The following prefixes are to identify the characteristic listed in a to e. Match them.
i) Hetero                  a) neighbouring positions in the benzene ring
ii) Laevo                 b) rotates the polarized light to the left
iii) Ortho                 c) several identical molecules linked together
iv) Poly                   d) not all the same atoms in the compound
                                e) Water is removed from the compound
Q.13 The following Umbelliferous fruits are obtained from the plants mentioned in a to e.
Match them correctly.
i) Anise                        a) Anethum graveoleus
ii) Caraway                  b) Foeniculum vulgere
iii) Coriander               c) Carum carvi
iv) Dill                         d) Pimpinella anisum
                                     e) coriandrum sativum
Q.14 The drugs listed from (i) to (iv) are having the antihypertensive mechanism listed in
a to e. Match them correctly.
i) Pindolol                      a) Vasodilator
ii) Minoxidil                  b) centrally acting α2-adrenoreceptor agonist
iii) Captopril                  c) Diuretic
iv) Amiloride                 d) β-blocker
                                       e) Angiotensin converting enzyme inhibitor
Q.15 A drug is deemed to as indicated in (i) to (iv) and the corresponding definations are
given in a to e. Match them correctly.
i) Misbranded drug                a) It is marketed without prescription
ii) Adulterant drug                 b) It is imported under a name which belongs to another drug.
iii) Spurious drug                   c) It is not labeled in the prescribed manner
iv) Drug abuse                       d) If it contains any harmful or toxic substance
                                               e) If it develops addiction
3. Fill in the blanks
a) Synthetic camphor is optically…..1……and is prepared from…..2……whereas
natural camphor is optically… …3……..….and is obtained from……..4……….
b) Alkaloids of ergot exist in stereoisomeric pairs and they are derived from optically
isomeric form. They are known as………5………..and……….6…………which
differ only in configuration at the asymmetric carbon atom which carries..7….group.
c) In aseptic area, the personnel are provided with uniforms made by……8…….or by
….9……
d) ….10…is used as an….11…..indicator in….12……titrations, because the
fluorescence changes with….13……..
e) Polypropylene glycol is usually included in topical formulations as a…14 &….15.
f) Transfer of most drugs across biologic membrane occurs by…..16……diffusion
region…..17……concentration to one of ……18…….concentration.
g) Biologic half-life of a that is eliminated by the first order kinetics is
mathematically represented by………….19………..
h) In Quillala bark, the dark patches often found on the surface are known as….20….

Answer Key-1993 (Multiple Choice)
1.a 2.c 3.b 4.b 5.d 6.b 7.d 8.c 9.d 10.a 11.a 12.b 13.c 14.a 15.a 16.d 17.a 18.b
19.a 20.b
Match the column
1. (1) b (2) a (3) d (4) c                              2. (1) e (2) d (3) c (4) a
3. (1) e (2) b (3) a (4) d                              4. (1) e (2) a (3) b (4) c
5. (1) d (2) a (3) b (4) c                              6. (1) d (2) e (3) b (4) a
7. (1) c (2) a (3) b (4) d                              8. (1) a (2) d (3) e (4) b
9. (1) d (2) a (3) e (4) b                             10. (1) b (2) d (3) a (4) c
11. (1) b (2) d (3) c (4) a                           12. (1) d (2) b (3) a (4) c
13. (1) d (2) c (3) e (4) a                            14. (1) d (2) a (3) e (4) c
15. (1) c (2) d (3) b (4) e
Fill in the blanks
A (1) Inactive (2) α-pinene (3) active (4) Cinnamon camphor
B (1) Ergonovine (2) ergotamine (3) carboxylic group in side the chain
C (1) Dacron (2) tyvex
D (1) Alizarin (2) Pm Indicator (3) complexometry (4) Complexation
E (1) humectant (2) aqueous phase in hydrophilic ointment
F (1) Passive diffusion (2) high concentration (3) Low
G (1) 0.693/k  
H (1) rhytidom

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