Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Pharmacy I Year PHARMACEUTICAL ANALYSIS-I Previous Question Paper (April - 2023 - R17)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Define primary and secondary standards with example.
Answer
A primary standard is a highly pure, stable substance used to prepare standard solutions directly by weighing, such as Potassium Hydrogen Phthalate. A secondary standard is a substance whose concentration must be determined by titration against a primary standard, such as Sodium Hydroxide.
Distinguish between Accuracy and Precision.
Answer
Accuracy refers to the closeness of a measured value to the true or accepted value. Precision refers to the closeness of agreement between a set of replicate measurements, indicating the reproducibility of the method regardless of the true value.
Define Non-Aqueous titration with example.
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Classify acid base titration.
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What is post precipitation?
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What is complexometric titrations? Classify it with examples.
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Differentiate between internal and external redox indicators.
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Explain the theory of redox titrations.
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Write the principle of Polarography.
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Give any two important applications of potentiometry.
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Part B
Describe on types of errors and methods of minimizing errors.
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Write short note on significant figures with relevant examples.
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Discuss the various methods of expressing concentration.
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Give the Preparation and standardization of 1M Sodium hydroxide.
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Illustrate briefly on Neutralization curves and the choice of indicators in acid base titrations.
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Brief on the various solvents used in non-aqueous titration.
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Discuss the principle and procedure involved in the estimation of Sodium benzoate.
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Define Gravimetric analysis. Write a note on Co-precipitation and Post precipitation.
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Explain the steps involved in gravimetric analysis.
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How will you estimate Magnesium sulphate by Complexometry?
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What are the different indicators used in complexometric titration?
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Discuss briefly on Iodimetry and Iodometry titrations with examples.
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Discuss the principle and applications of Redox titration.
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Explain in detail about the Rotating platinum electrode.
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Short note on Ilkovic equation.
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Discuss the construction and working of any one Indicator electrode.
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Discuss the various applications of Conductometric titrations.
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