M.Sc. Chemistry Semester-III Sessional-II PDF
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This document is a collection of exam questions for a Master's-level chemistry course, covering topics such as organic chemistry, synthesis, and related concepts. The questions appear to be from a variety of sections and topics, suggesting it's a comprehensive assessment.
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## M.Sc. Chemistry (Semester-III) ### Sessional-II #### Reagents and Organic synthesis **Max. Marks: 40** 1. What are synthon and synthetic equivalents? Explain with example. (3) 2. Draw the retrosynthetic analysis for the given compound. Also suggest all the steps and reagents involved in its syn...
## M.Sc. Chemistry (Semester-III) ### Sessional-II #### Reagents and Organic synthesis **Max. Marks: 40** 1. What are synthon and synthetic equivalents? Explain with example. (3) 2. Draw the retrosynthetic analysis for the given compound. Also suggest all the steps and reagents involved in its synthesis. (Any five) (5X5=25) - a - b - c - d - e - f - g 3. Write short note on the following (Any two): (4X2=8) - a. Inverse polarity - b. Guidelines for disconnection - c. Role of chemoselectivity and regioselectivity in disconnection 4. How can you prepare the following molecule using Grignard reagent and acetylene? (4) - ## M.Sc. III semester Organic chemistry ### Sessional-I #### Reagents in organic synthesis **Time: 90 min** **Max. Marks: 40** 1. Give the structures of the major products expected from the following reactions (any three): (5X3-15) - i) - ii) - iii) - iv) - v) ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## SESSIONAL TEST - I ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **04/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. (i) Draw Mills & zigzag projection for ribose and Pig Trough for mannose. (3) - (ii) Comment on the terms "chemical biology" and "biochemistry". (2) 2. What are carbohydrates, classify them along with hexoses tree. Also write down their functions. (6) 3. Propose suitable mechanism for the conversion of Fischer into the Haworth projection. (3) 4. What is penetration depth and justify the following equation, B(x) = Bo e -x/7. (6.5) 5. Differentiae between type I and II superconductors with appropriate examples. (6.5) OR Briefly discuss the Meisner effect with appropriate examples. (6.5) 6. Write each answer with the correct number of significant figures. (5) - (i) 1.021 +2.69 = ? - (ii) 4.34 x 9.2 = ? - (iii) 0.0602 ÷ (2.113 x 10*) = ? - (iv) log (4.218 x 10¹²) = ? - (v) 102.384 = ?, 242.102 ## M.Sc. (Chemistry) Semester-III, Internal-I (2022) ### ADVANCED TOOLS IN ORGANIC SYNTHESIS **MM:40** 1. Reaction of 11.6 g of the aldehyde A with 462 mg of Wilkinson's catalyst yield 9.2 g of alkene B. Calculate the mol% of catalyst used and the yield of the reaction. (6) - CHO (PPh3)3RhCl (mol. wt. 923) - A (mol. wt. 232) - B (mol. wt. 204) 2: Write down the missing product for the following reaction. (8) - A - B - C - D 3. Propose the suitable mechanism for the given reactions. (12) - 4: Discuss any TWO of the following named reactions. (7×2=14) - (a) Apple reaction - (c) Weiss-cook condensation - (e) Henry reaction ## SESSIONAL TEST - II ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **28/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. Discuss briefly about the BCS theory. (5) 2. Explain why the position of the equilibrium shown below is solvent dependent. (3) - 3. Write note on any three of the following: (3 x 3 = 9) - (i) Coherence length - (ii) Cooper pairs - (iii) Isotope effect - (iv) Organic Superconductors 4. Explain why axial product is preferentially formed in the given reaction. (2) - 5. Describe mutarotation and anomeric effect with suitable examples. (5) 6. Discuss the mechanism of glucosazone formation. (3) - 7. What fraction of a Gaussian population lies within the following intervals: (3) - (a) µ±σ - (b) µ to + σ - (c) – σ to – 0.5σ 8. What is the relation between the standard deviation and the precision of a procedure? What is the relation between standard deviation and accuracy? (3) 9. Some trainers injected NaHCO3 into a horse prior to a race to neutralize lactic acid that accumulates during strenuous activity. To enforce a ban on this practice, HCO3¯ in horse blood is measured after a race. When a manufacturer stopped making an instrument that was certified for such measurements, authorities needed to certify a new instrument. The results from two instruments are summarized below. (7) - Measurement of HCO3¯ in horse blood - Original Instrument - Substitute instrument - Mean (x, mM) - Standard deviation (s, mM) - Number of measurements (n) - Can we certify this new (substitute) instrument for the measurement of HCO3¯ in horse blood? ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## SESSIONAL TEST - I ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **04/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. (i) Draw Mills & zigzag projection for ribose and Pig Trough for mannose. (3) - (ii) Comment on the terms "chemical biology" and "biochemistry". (2) 2. What are carbohydrates, classify them along with hexoses tree. Also write down their functions. (6) 3. Propose suitable mechanism for the conversion of Fischer into the Haworth projection. (3) 4. What is penetration depth and justify the following equation, B(x) = Bo e -x/7. (6.5) 5. Differentiae between type I and II superconductors with appropriate examples. (6.5) OR Briefly discuss the Meisner effect with appropriate examples. (6.5) 6. Write each answer with the correct number of significant figures. (5) - (i) 1.021 +2.69 = ? - (ii) 4.34 x 9.2 = ? - (iii) 0.0602 ÷ (2.113 x 10*) = ? - (iv) log (4.218 x 10¹²) = ? - (v) 102.384 = ?, 242.102 ## M.Sc. (Chemistry) Semester-III, Internal-I (2022) ### ADVANCED TOOLS IN ORGANIC SYNTHESIS **MM:40** 1. Reaction of 11.6 g of the aldehyde A with 462 mg of Wilkinson's catalyst yield 9.2 g of alkene B. Calculate the mol% of catalyst used and the yield of the reaction. (6) - CHO (PPh3)3RhCl (mol. wt. 923) - A (mol. wt. 232) - B (mol. wt. 204) 2: Write down the missing product for the following reaction. (8) - A - B - C - D 3. Propose the suitable mechanism for the given reactions. (12) - 4: Discuss any TWO of the following named reactions. (7×2=14) - (a) Apple reaction - (c) Weiss-cook condensation - (e) Henry reaction ## SESSIONAL TEST - II ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **28/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. Discuss briefly about the BCS theory. (5) 2. Explain why the position of the equilibrium shown below is solvent dependent. (3) - 3. Write note on any three of the following: (3 x 3 = 9) - (i) Coherence length - (ii) Cooper pairs - (iii) Isotope effect - (iv) Organic Superconductors 4. Explain why axial product is preferentially formed in the given reaction. (2) - 5. Describe mutarotation and anomeric effect with suitable examples. (5) 6. Discuss the mechanism of glucosazone formation. (3) - 7. What fraction of a Gaussian population lies within the following intervals: (3) - (a) µ±σ - (b) µ to + σ - (c) – σ to – 0.5σ 8. What is the relation between the standard deviation and the precision of a procedure? What is the relation between standard deviation and accuracy? (3) 9. Some trainers injected NaHCO3 into a horse prior to a race to neutralize lactic acid that accumulates during strenuous activity. To enforce a ban on this practice, HCO3¯ in horse blood is measured after a race. When a manufacturer stopped making an instrument that was certified for such measurements, authorities needed to certify a new instrument. The results from two instruments are summarized below. (7) - Measurement of HCO3¯ in horse blood - Original Instrument - Substitute instrument - Mean (x, mM) - Standard deviation (s, mM) - Number of measurements (n) - Can we certify this new (substitute) instrument for the measurement of HCO3¯ in horse blood? ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## SESSIONAL TEST - I ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **04/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. (i) Draw Mills & zigzag projection for ribose and Pig Trough for mannose. (3) - (ii) Comment on the terms "chemical biology" and "biochemistry". (2) 2. What are carbohydrates, classify them along with hexoses tree. Also write down their functions. (6) 3. Propose suitable mechanism for the conversion of Fischer into the Haworth projection. (3) 4. What is penetration depth and justify the following equation, B(x) = Bo e -x/7. (6.5) 5. Differentiae between type I and II superconductors with appropriate examples. (6.5) OR Briefly discuss the Meisner effect with appropriate examples. (6.5) 6. Write each answer with the correct number of significant figures. (5) - (i) 1.021 +2.69 = ? - (ii) 4.34 x 9.2 = ? - (iii) 0.0602 ÷ (2.113 x 10*) = ? - (iv) log (4.218 x 10¹²) = ? - (v) 102.384 = ?, 242.102 ## M.Sc. (Chemistry) Semester-III, Internal-I (2022) ### ADVANCED TOOLS IN ORGANIC SYNTHESIS **MM:40** 1. Reaction of 11.6 g of the aldehyde A with 462 mg of Wilkinson's catalyst yield 9.2 g of alkene B. Calculate the mol% of catalyst used and the yield of the reaction. (6) - CHO (PPh3)3RhCl (mol. wt. 923) - A (mol. wt. 232) - B (mol. wt. 204) 2: Write down the missing product for the following reaction. (8) - A - B - C - D 3. Propose the suitable mechanism for the given reactions. (12) - 4: Discuss any TWO of the following named reactions. (7×2=14) - (a) Apple reaction - (c) Weiss-cook condensation - (e) Henry reaction ## SESSIONAL TEST - II ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **28/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. Discuss briefly about the BCS theory. (5) 2. Explain why the position of the equilibrium shown below is solvent dependent. (3) - 3. Write note on any three of the following: (3 x 3 = 9) - (i) Coherence length - (ii) Cooper pairs - (iii) Isotope effect - (iv) Organic Superconductors 4. Explain why axial product is preferentially formed in the given reaction. (2) - 5. Describe mutarotation and anomeric effect with suitable examples. (5) 6. Discuss the mechanism of glucosazone formation. (3) - 7. What fraction of a Gaussian population lies within the following intervals: (3) - (a) µ±σ - (b) µ to + σ - (c) – σ to – 0.5σ 8. What is the relation between the standard deviation and the precision of a procedure? What is the relation between standard deviation and accuracy? (3) 9. Some trainers injected NaHCO3 into a horse prior to a race to neutralize lactic acid that accumulates during strenuous activity. To enforce a ban on this practice, HCO3¯ in horse blood is measured after a race. When a manufacturer stopped making an instrument that was certified for such measurements, authorities needed to certify a new instrument. The results from two instruments are summarized below. (7) - Measurement of HCO3¯ in horse blood - Original Instrument - Substitute instrument - Mean (x, mM) - Standard deviation (s, mM) - Number of measurements (n) - Can we certify this new (substitute) instrument for the measurement of HCO3¯ in horse blood? ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## SESSIONAL TEST - I ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **04/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. (i) Draw Mills & zigzag projection for ribose and Pig Trough for mannose. (3) - (ii) Comment on the terms "chemical biology" and "biochemistry". (2) 2. What are carbohydrates, classify them along with hexoses tree. Also write down their functions. (6) 3. Propose suitable mechanism for the conversion of Fischer into the Haworth projection. (3) 4. What is penetration depth and justify the following equation, B(x) = Bo e -x/7. (6.5) 5. Differentiae between type I and II superconductors with appropriate examples. (6.5) OR Briefly discuss the Meisner effect with appropriate examples. (6.5) 6. Write each answer with the correct number of significant figures. (5) - (i) 1.021 +2.69 = ? - (ii) 4.34 x 9.2 = ? - (iii) 0.0602 ÷ (2.113 x 10*) = ? - (iv) log (4.218 x 10¹²) = ? - (v) 102.384 = ?, 242.102 ## M.Sc. (Chemistry) Semester-III, Internal-I (2022) ### ADVANCED TOOLS IN ORGANIC SYNTHESIS **MM:40** 1. Reaction of 11.6 g of the aldehyde A with 462 mg of Wilkinson's catalyst yield 9.2 g of alkene B. Calculate the mol% of catalyst used and the yield of the reaction. (6) - CHO (PPh3)3RhCl (mol. wt. 923) - A (mol. wt. 232) - B (mol. wt. 204) 2: Write down the missing product for the following reaction. (8) - A - B - C - D 3. Propose the suitable mechanism for the given reactions. (12) - 4: Discuss any TWO of the following named reactions. (7×2=14) - (a) Apple reaction - (c) Weiss-cook condensation - (e) Henry reaction ## SESSIONAL TEST - II ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **28/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. Discuss briefly about the BCS theory. (5) 2. Explain why the position of the equilibrium shown below is solvent dependent. (3) - 3. Write note on any three of the following: (3 x 3 = 9) - (i) Coherence length - (ii) Cooper pairs - (iii) Isotope effect - (iv) Organic Superconductors 4. Explain why axial product is preferentially formed in the given reaction. (2) - 5. Describe mutarotation and anomeric effect with suitable examples. (5) 6. Discuss the mechanism of glucosazone formation. (3) - 7. What fraction of a Gaussian population lies within the following intervals: (3) - (a) µ±σ - (b) µ to + σ - (c) – σ to – 0.5σ 8. What is the relation between the standard deviation and the precision of a procedure? What is the relation between standard deviation and accuracy? (3) 9. Some trainers injected NaHCO3 into a horse prior to a race to neutralize lactic acid that accumulates during strenuous activity. To enforce a ban on this practice, HCO3¯ in horse blood is measured after a race. When a manufacturer stopped making an instrument that was certified for such measurements, authorities needed to certify a new instrument. The results from two instruments are summarized below. (7) - Measurement of HCO3¯ in horse blood - Original Instrument - Substitute instrument - Mean (x, mM) - Standard deviation (s, mM) - Number of measurements (n) - Can we certify this new (substitute) instrument for the measurement of HCO3¯ in horse blood? ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## SESSIONAL TEST - I ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **04/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. (i) Draw Mills & zigzag projection for ribose and Pig Trough for mannose. (3) - (ii) Comment on the terms "chemical biology" and "biochemistry". (2) 2. What are carbohydrates, classify them along with hexoses tree. Also write down their functions. (6) 3. Propose suitable mechanism for the conversion of Fischer into the Haworth projection. (3) 4. What is penetration depth and justify the following equation, B(x) = Bo e -x/7. (6.5) 5. Differentiae between type I and II superconductors with appropriate examples. (6.5) OR Briefly discuss the Meisner effect with appropriate examples. (6.5) 6. Write each answer with the correct number of significant figures. (5) - (i) 1.021 +2.69 = ? - (ii) 4.34 x 9.2 = ? - (iii) 0.0602 ÷ (2.113 x 10*) = ? - (iv) log (4.218 x 10¹²) = ? - (v) 102.384 = ?, 242.102 ## M.Sc. (Chemistry) Semester-III, Internal-I (2022) ### ADVANCED TOOLS IN ORGANIC SYNTHESIS **MM:40** 1. Reaction of 11.6 g of the aldehyde A with 462 mg of Wilkinson's catalyst yield 9.2 g of alkene B. Calculate the mol% of catalyst used and the yield of the reaction. (6) - CHO (PPh3)3RhCl (mol. wt. 923) - A (mol. wt. 232) - B (mol. wt. 204) 2: Write down the missing product for the following reaction. (8) - A - B - C - D 3. Propose the suitable mechanism for the given reactions. (12) - 4: Discuss any TWO of the following named reactions. (7×2=14) - (a) Apple reaction - (c) Weiss-cook condensation - (e) Henry reaction ## SESSIONAL TEST - II ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **28/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. Discuss briefly about the BCS theory. (5) 2. Explain why the position of the equilibrium shown below is solvent dependent. (3) - 3. Write note on any three of the following: (3 x 3 = 9) - (i) Coherence length - (ii) Cooper pairs - (iii) Isotope effect - (iv) Organic Superconductors 4. Explain why axial product is preferentially formed in the given reaction. (2) - 5. Describe mutarotation and anomeric effect with suitable examples. (5) 6. Discuss the mechanism of glucosazone formation. (3) - 7. What fraction of a Gaussian population lies within the following intervals: (3) - (a) µ±σ - (b) µ to + σ - (c) – σ to – 0.5σ 8. What is the relation between the standard deviation and the precision of a procedure? What is the relation between standard deviation and accuracy? (3) 9. Some trainers injected NaHCO3 into a horse prior to a race to neutralize lactic acid that accumulates during strenuous activity. To enforce a ban on this practice, HCO3¯ in horse blood is measured after a race. When a manufacturer stopped making an instrument that was certified for such measurements, authorities needed to certify a new instrument. The results from two instruments are summarized below. (7) - Measurement of HCO3¯ in horse blood - Original Instrument - Substitute instrument - Mean (x, mM) - Standard deviation (s, mM) - Number of measurements (n) - Can we certify this new (substitute) instrument for the measurement of HCO3¯ in horse blood? ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## M.Sc. Chemistry III Semester, Ist Sessional Test -2022 ### Environmental and Green Chemistry #### (Ability Enhancement-I) #### Paper -XVIII **Time: 1 h, Date: 14.10.2022** **Maximum Marks: 40** **Note: Attempt any three questions.** 1. Discuss the factors which affect the water quality parameters. 2. Discuss any three of the following water quality standards: - a) Total sulfur - b) Total phosphorus - c) Residual Chlorine - d) Total nitrogen - e) BOD & COD - f) TOC. 3. Define the term chemical toxicology. Explain the impact of toxic chemicals on enzymes. 4. Describe the bio-chemical effect of any two: - i) NOx - ii) SOx - iii) CO ## SESSIONAL TEST - I ## M.Sc. Chemistry IIIrd Semester (2022 – 2023) ### Chemistry of Synthetic and Natural Materials-I(MCH-317) **04/11/2022** **Time: 60 minutes** **Max. Marks: 40** 1. (i) Draw Mills & zigzag projection for ribose and Pig Trough for mannose. (3) - (ii) Comment on the terms "chemical biology" and "biochemistry". (2) 2. What are carbohydrates, classify them along with hexoses tree. Also write down their functions. (6) 3. Propose suitable mechanism for the conversion of Fischer into the Haworth projection. (3) 4. What is penetration depth and justify the following equation, B(x) = Bo e -x/7. (6.5) 5. Differentiae between type I and II superconductors with appropriate examples. (6.5) OR Briefly discuss the Meisner effect with appropriate examples. (6.5) 6. Write each answer with the correct number of significant figures. (5) - (i) 1.021 +2.69 = ? - (ii) 4.34 x 9.2 = ? - (iii) 0.0602 ÷ (2.113 x 10*) = ? - (iv) log (4.218 x 10¹²) = ?
