BSc Chemistry SEM I ATKT CHEMISTRY PAPER I Question Paper - Mumbai University | munotes

Questions asked in this paper

• Please check whether you have got the right question paper

1. Q1 All the Questions are compulsory
2. Q2 Figures to the right indicate full marks
3. Q3 The use of log table Non-programmable calculator is allowed
4. Q4 Answers to the same question should be written together
5. Q1 A) Select the correct option and complete the following sentences. (Attempt any twelve) 12 marks
   • i) _ is a path function li) _ 1s an extensive property
   • a) Temperature b) mass
   • iii)40g of NaOH in one solution is
   • a) 0.1N b) 0.01N c) IM is a state function
   • v) A system that can exchange energy but not matter with surrounding is
   • vi) One mole of substance in solution is vil) The shell with n=2 is commonly referred to as The charge on the beta particle is
   • ix) According to Quantum theory E=
   • x) . The first period has only . element/elements
   • a) one b) c) three
   • xi). Slater proposed a set of rules for calculating
   • xiii) In ethanamine, nitrogen is -------------- hybridized
   • xiv) The carbocation is -------------species
   • xv) The group . exhibits —I effect Xvi) Cyclohexanol is . alcohol Xvil) Anionic intermediate having a negative charge.on trivalent carbon is Nucleophiles are also known as
   • B) State whether the following sentences are true or false. 3 (Attempt any three)
6. Q1 Intensive properties depend on amount
   • ii) Enthalpy is a state function Electron enters in a shell in the order of increasing energy
   • iv) Isoelectronic atoms or ions have same number of electrons
   • v) Monochloroacetic acid is a stronger acid than acetic acid
   • vi) Acetylene is non-linear molecule
   • C) Match the following (attempt any five). 5
7. Q5 amide e) CN
8. Q2 Attempt any four of the following
   • A. Derive an equation for variation of heat of reactions with 5
   • B. Explain normality. What volume of 5M is required to prepare 5
   • C. Explain 1) Enthalpy 2) Internal Energy 5
   • D. Explain equivalent weight. Find the weight of required to 5 prepare 250cm? of 0.05M solution. (At. Wt. H
   • E. What is heat of reaction? For reaction + Foe) AE=- 5 57.5 at 298 K. Calculate AH of reaction (R = 8.31452
   • F. State first law of thermodynamics. Derive the mathematical 5 expression for the same
9. Q3 Attempt any four of the following
   • A. Discuss the postulates of Bohr’s atomic model. 5
   • B. Write limitations of Rutherford’s atomic model. 5
   • C. Calculate faced by 2p electron in oxygen atom (Z = 8) for 5
   • D. Describe in details about s and p block elements. 5
   • E. Discuss on the Mulliken’s method for calculation of 5
   • F. Which factors affect the magnitude of enthalpy of ionisation? 5
10. Q4 Attempt any four of the following
    • A. Write IUPAC names of the following compounds: 5
    • B. Explain sp hybridization of carbon with suitable example. Draw orbital 5 picture of ethene
    • C. Discuss the stability of carbanion on the basis of resonance and 5
    • D. Explain the structure and shape of the dimethyl ether on the basis of 5 hybridization of carbon and oxygen following compounds as electrophilic and nucleophilic reagents:
    • ii) Indicate the type of hybridization of C,O, N atoms in acetamide. 2 Draw the structure of the following compounds: 5
    • v) Butanoyl chloride
11. Q5 Attempt any four of the following
    • A. Explain 5
    • B. Four moles of an ideal gas at 2 atm. & is compressed 5 isothermally to one third of its volume by an external pressure of 4 atmosphere. Calculate the workdone (R = mol")
    • C. Write a note on Aufbau principle. 5
    • D. Give the classification of elements on the basis of their types. 5
    • E. What are free radicals? Explain the tertiary alkyl radicals are more 5 stable than secondary and primary radicals
    • F. Explain sp hybridization of nitrogen with suitable example. Draw 5 orbital picture of methylamine

Read from the scan above, so a character or two may differ. The scan is the original.