ANSWERS of Previous PharmaQUIZ-39:
1.A 2.A 3.A 4.A 5.C
6.C 7.A 8.C 9.B 10.A
SEE QUESTIONS OF QUIZ - 39
PharmaQuiz - 40
This quiz is submitted by, Mr. Sagar Naskar (M.Pharm.; PhD (pursuing) Jadavpur University)
Assistant Professor,
Dept. Pharm. Chemistry,
Bengal College of Pharm.Sciences and Research(WBUT)
PharmaTutor family thanking you for your precious contribution to pharma community.
1) Non aqueous titration is carried out for
a) water insoluble drugs
b) weakly acidic drugs
c) weakly basic drugs
d) all
2) Which one is aprotic solvent?
a) chloroform
b) benzene
c) both
d) none
3) Protogenic solvent is
a) sulphuric acid
b) hydrochloric acid
c) nitric acid
d) all
4) Protophilic solvent is
a) sodium hydroxide
b) lithium methoxide
c) sodium methoxide
d) all
5) Which one is useful in non aqueous titration?
a) leveling solvent
b) differentiating solvent
c) both
d) none
6) Water may interfere with non aqueous titration by
a) acting as strong acid than the weakly acidic drug
b) acting as strong base than the weakly basic drug
c) both
d) none
7) In the preparation of the 0.1 (N) perchloric acid amount of acetic anhydride should be optimum. Why?
a) if added more quantity then amine drug may acetylate and causes erroneous result
b) if added less quantity then water may interfere with the titration.
c) formation of acetyl perchlorate can cause explosion
d) all
8) Perchloric acid can be standardized by using
a) benzoic acid
b) oxalic acid
c) potassium hydrogen phthalate
d) tartaric acid
9) Which one is used as indicator for non aqueous titration?
a) crystal violet
b) thymol blue
c) oracet blue B
d) all
10) Which of the following is added for the titration of halogen acid salt of weak bases?
a) lead acetate
b) mercuric acetate
c) bismuth iodide
d) copper sulphide
11) Potentiometric titration is used in nonaqueous titration, when
a) colour of the solution is high
b) colour of the solution is low
c) both
d) none
12) The stability of KFR can be increased by replacing methanol with?
a) 2-methoxy ethanol
b) 2-chloro ethanol
c) trifluoro ethanol
d) all
13) The pH of the KFT should be maintained at
a) 2-3
b) 5-7
c) 12
d) at any pH
14) Which of the following can not be titrated by Karl Fischer method?
a) Chromates
b) thiosulphates
c) salt of weak oxyacid
d) all
15) Which one is polydentate
a) ethylene diamine
b) EDTA
c) both
d) none
16) Which one is sequestering agent?
a) salicylaldoxime
b) 8-hydroxy quinolilne
c) EDTA
d) all
17) The complexometric titration where EDTA is used, carried out at basic pH. Why?
a) For the stability of complex formed
b) reaction rate is optimum in basic pH
c) there is less number of side reaction
d) all
18) Which is used as masking agent for lead in complexometrric titration?
a) Sod. Sulphide
b) oxalate
c) thiocetamide
d) all
19) Dimercaprol is used as complexing agent for complexion of
a) mercury
b) arsenic
c) lead
d) all
20) Indicator used in complexometric titration is…….
a) erichrome blacl T
b) xylenolorange
c) mordant black II
d) all
ANSWERS WILL BE PUBLISHED IN NEXT EDITION ON NEXT DAY
IF YOU HAVE CREATED ANY SUCH QUIZZES, YOU CAN SHARE IT WITH ALL PHARMAMATES OVER HERE.
SEND YOUR QUIZZES WITH YOUR NAME AND PROFESSIONAL DETAILS TO admin@pharmatutor.org
.png)
