Pharmaceutical Analysis-Complexometric Titration (Multiple Choice Questions, MCQs)

Question 1: Ammonium fluoride is masking agent is used for

• Aluminium
• Copper
• Iron
• Heavy metals

Question 2: Magnesium oxide content in magnesium compounds like Magnesium trisilicate, Mag. Carbonate and Mag. Sulphate are determined using

• Acid-base titration
• Non-aqueous titration
• Precipitation
• Complexometric titration

Question 3: The compound not assayed by complexometric titration

• Magnesium trisilicate 
• Sodium calcium edetate 
• Calcium lactate 
• Progesterone

Question 4: Metal indicator is used in 

• Non-aqueous titration
• Acid -base titration
• Complexometric titration
• Potentiometric titration

Question 5: Mordant Black II indicator used in

• Complexometric titration
• Precipitation titration
• Non-aqueous titration
• Acid-base titration

Question 6: Which one of the following indicator used in complexometric titration

• Methyl orange
• Phenolphthalein
• Catachol violet
• Crystal violet

Question 7: Metal ions solution in a buffer is titrated with

• EDTA
• Non-aqueous solvent
• Water
• All of the above

Question 8: Calcium containing compound are analysed by

• Aqueous titration
• Non-aqueous titration
• Complexometric titration
• Potentiometric titration

Question 9: auxiliary chelating agent forming complex with one metal in presence of other metal is called as

• Masking agents
• Complexing agent
• Indicator
• All the terms have same meaning

Question 10: Which masking agent used for metal aluminium and iron

• Triethanolamine
• EDTA
• Potassium Cyanide
• Thioglycerol

Answers of above Questions:

1. Iron

2. Complexometric titration

3. Sodium calcium edetate 

4. Complexometric titration

5. Complexometric titration

6. Catachol violet

7. All of the above

8. Complexometric titration

9. Masking agents

10. Triethanolamine