1. Other name of Ferric ammonium sulfate A. Ferric alum B. Fe NH4 (SO4)2 C. Fe (NH4)2(SO4)2 D. A and B E. A and C
D
2. The following is/are example/s of metal-ion indicators. I. Murexide II. Calmagite III. Pyrocathecol violet IV. Ferric alum A. I only B. I and II only C. I, II, and III D. I, II, III and IV
C
3. Assay of diluted HCl is expressed in: A. % w/w B. % w/v C. Both a and b D. None of the choices
B
4. Standard solution in precipitation method od analysis A. Disodium edetate B. Silver nitrate C. Sodium Methoxide D. Perchloric acid
B
5. Use to prevent one element from interfering in the analysis of another element A. Masking agent B. Demasking agent C. Both a and b D. None of the choices
A
6. Argentometric titration is titration with \_\_\_\_\_\_ ion. A. Magnesium B. Sodium C. Silver D. Potassium
C
7. Fajans titration uses \_\_\_\_ indicator. A. Acid-base B. Adsorption C. Metal-ion D. None of the choices
B
8. Reasons why residual titration are performeD. A. Reaction proceeds slowly B. Poor solubility of the sample C. Sample does not give sharp end point D. All of the choices
D
9. Solutions containing all the reagents and solvents used in the analysis, but no deliberately added analytE. A. Blank solution B. Solution with sample C. Standard solution D. Test solution
A
10. Describes how close a measured value is to the true valuE. A. Accuracy B. Precision C. Range D. Standard deviation
A
11. Primary standard in the standardization of perchloric acid A. Potassium hydrogen phthalate B. Calcium carbonate C. Benzoic acid D. Sodium carbonate
A
12. Primary standard in the standardization of sodium methoxidE. A. Benzoic acid B. Sodium bicarbonate C. Sodium carbonate D. Potassium hydrogen phthalate
A
13. The term dried to constant weight means that two consecutive weighing do not differ by more than: A. 0.0002 g B. 0.2 mg C. 0.5 mg/g D. All of the choices E. C only
D
14. Other name of systematic error A. Determinate B. Indeterminate C. Random D. Both b and c
A
15. Ferric ammonium sulfate is used as indicator in the standardization of: A. Silver nitrate B. Ammonium thiocyanate C. Edetate disodium D. All of the choices
B
16. The end point of using number ferric ammonium sulfate is: A. White precipitate B. Red-brown color C. Pink color D. Blue color
B
17. Limit moisture in nonaqueous titrimetric analysis is less than: A. 0.5 % B. 0.05 % C. 0.2 % D. 0.02 %
B
18. Complete reaction: H2C4H4O6 + NaOH - A. Na2C4H4O6 B. H2O C. Both a and b D. None of the choices
C
19. A ligand that binds to a metal ion through only one atom. A. Monodentate B. Bidentate C. Tridentate D. Tetradentate
A
20. Which of the following is added to maintain the pH of sodium thiosulfate in optimum range for the stability of the solution? A. Sodium bicarbonate B. Chloroform C. Thymol D. Sodium carbonate
D
21. Standard solution in non-aqueous titrimetric analysis-acidimetry A. perchloric acid B. hydrogen bromide C. both a and b D. none of the choices
C
22. Standards solutions are also known as: A. test solutions B. volumetric solutions C. saturated solution D. none of the choices
B
23. If starch is used as an indicator, the end point is/are: A. appearance of intense blue color B. disappearance of intense blue color C. both of the choices D. none of the choices
C
24. Types of chemical reaction used in the volumetric analysis A. redox B. neutralization C. diazotization D. all of the choices E. a and b only
D