BSc Sem IV 2022 2023 Mar 2023 CHEMISTRY I Question Paper - Mumbai University | munotes

Questions asked in this paper

• ii) Figures to the right indicate full marks

1. Q1 Attempt any Twelve from MCQ:
   • A. Multiple choice questions 1.The principle of lead silver system is used for Galvanic cell consists of half cell 12
2. Q3 In the amalgam, concentration cell metal is with
3. Q4 Standard electrode potential is denoted by
4. Q5 used in the salt bridge is because
   • a) It forms jelly material with agar agar b) It is weak electrolyte
   • c) good conductor of electricity d) transport number of almost equal
5. Q6 In the phase diagram at triple point the system is
6. Q7 Which is not a transition metal out of following
7. Q8 EDTA combines with cations to form
8. Q10 Which of the following has magnesium? 11.The number of unpaired electrons in Ni(CO), 12 Which of the following ions is expected to be colourless? 13.Salt of carboxylic acid is called as 14.Which of the following is sulphonating agent? 15.The formula for oleum is 16.Among the following which is compound is most acidic 17.Dehydration of two molucules of carboxylic acid produce 18.Identify the correct IUPAC name of the following compound
   • B. Match the following. 5
   • ii) Qu Electrode ii) elimination of liquid junction potential
   • v) Highest Oxidation State VCD/ SYBSc SEMIV 100MARKS 3 HOURS ‘A C. Write true or false. [3]
9. Q1 Oxidation is a loss of electron
10. Q2 Salicylic acid is weaker than Benzoic acid 3.The ore of aluminium is pyrolusite
11. Q2 Answer the following (Attempt any four): 20 marks
    • A.what are the conventions to represent the galvanic cell
    • B.Explainthe type of ion specific electrode
    • C.Describe the phase diagram of water system with suitable phase diagram D State Gibb’s phase rule and explain any two terms involve in it with suitable example the functions of salt bridge . (3)
    • b) give the cell reaction of given cell- Zn| | Cu*?| Cu 2
    • F. Calculate the potential of following electrode
12. Q3 Answer the following. Attempt any four: 20 marks
    • A. Define the ligand? Write the types of ligands with suitable examples
    • B. Write the EAN rule and eighteen electron rule with two examples of each rule
    • C. Explain sp’ hybridization in and dsp? in [Ni(CN) 4]
    • D. Write the significance of special stability
    • E. Explain Werner’s theory of coordination compounds Name the following complexes:
13. Q4 Answer the following Attempt any four: 20 marks
    • A.What is Dieckmann condensation ? Write its mechanism
    • B.Write any two methods ior preparation of carboxylic acid
    • C.What is Hell-Volhard Zeiinski reaction ? Explain with mechanism
    • D.How is the picric acid prepared from phenol
    • E. what is Claisen condensation ? Give is mechanism F What is ipso substitution?Explain with sutable example
14. Q5 Answer the following .Attempt any four: 20 marks
    • A.Derive the Nernst’s equation for EMF of cell and single electode potencial
    • B.Descibe the Eutectic system with suitable phase diagram
    • C.Explain various applications of coordination compounds
    • D. Write the formula of the following complex compound:
    • E.Write doen the IUPAC name of the following compound
    • F.What is nuleophlic acyl substitution? Give mechanism in alkaline and acidic medium

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