JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B. Pharmacy I Year PHARMACEUTICAL ANALYSIS-I Previous Question Paper (June/July - 2018 - R17)
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
What is Standardization and end point?
Answer
Standardization is the process of determining the exact concentration of a solution by titrating it against a known quantity of a primary standard. The end point is the point in a titration at which a physical change, such as a color change of an indicator, occurs, signaling that the chemical reaction is complete.
Distinguish between primary and secondary standards.
Answer
Primary standards are substances of high purity, stable in air, and possess a high molar mass, used to prepare solutions of accurately known concentration directly by weighing. Secondary standards are substances whose concentration cannot be determined directly by weighing due to instability or impurity; their concentration must be determined by standardization against a primary standard.
Write a note on acid-base indicators.
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Write the assay of Ephedrine Hcl.
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Write the principle of Mohr’s method.
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Discuss advantages and disadvantages of gravimetry.
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Write the principle of Redox titrations.
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Discuss the principle and applications of Dichrometry.
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Write applications of conductometric titrations.
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Write the principle of Ilkovic equation.
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Part B
What is significant figure? Give some rules for calculating significant figure.
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Write preparation and standardization of 0.1N KMNO4.
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Explain the different sources of error and its minimization techniques.
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Discuss the preparation and standardization of 0.1N Ceric ammonium sulphate.
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Explain the theory of acid base indicators.
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Write titration curve for the neutralization of Strong acid Vs Weak base.
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Explain the assay procedure of Sodium benzoate.
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Write a note on alkalimetry in non-aqueous titration with suitable examples.
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Write a note on theory and indicators used in complexometric titrations.
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Write the Assay procedure of BaSo4.
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Explain various steps involved in Gravimetry with suitable examples.
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Describe Volhards method in Precipitation titrations.
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Write about indicators in Oxidation-Reduction titration with examples.
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Discuss the principles and applications of Cerimetry.
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What are the different types of Redox titrations. Explain any one with example.
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Write the principle and applications of Iodimetry.
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Write the methods to determine the end point of potentiometric titration and give its applications.
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Describe the construction and working of Dropping mercury electrode.
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Write the construction and working of reference electrode in Potentiometric titrations.
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What is conductivity cell? Write its construction and method involved.
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