General Instructions
1. All questions are compulsory.
2. Question nos. 1 to 8 are very short answer questions and carry 1 mark each.
3. Question nos. 9 to 18 are short answer questions and carry 2 marks each.
4. Question nos. 19 to 27 are also short answer questions and carry 3 marks each
5. Question nos. 28 to 30 are long answer questions and carry 5 marks each
6. Use log tables if necessary, use of calculators is not allowed.
1. Give preparation reaction for Neoprene.
2. What is colloidon?
3. Write the IUPAC name of [Ni(NH3)2Br2]
4. Why do we require artificial sweetening agents?
5. Why cannot vitamin C be stored in our body?
6. Give the structure and IUPAC name of monohydric phenol of molecular formula C7H8O?
7. What is meant by Schiff’s base?
8. Give an example of Gattermann reaction?
9. The unit cell of an element of atomic mass108 u and density 10.5g/cm3 is a cube with edge length
409 pm. Find the structure of the crystal lattice(simple ,fcc or bcc) Avogadro’s constant =6.022 X1023.
10. Explain the following:
1. Ferromagnetism
2. Paramagnetism
11. Explain the chemistry of fuel cell.
Or
Write the electrode reaction of the Leclanche cell.
12. Why is copper sulphate pentahydrate coloured ?
13.How is decron obtained from ethylene glycol and terphthalic acid? .
14. Differenciate between retention and inversion.
15. Describe antacids and non-narcotic analgesics. Give one example of each.
16. Draw figure to show splitting of degenerate d-orbitals in an octahedral crystal field.
17. Draw resonating structures of chlorobenzene showing the exact positions of the charges.
With the help of these structures, explain why is chlorobenzene difficult to hydrolyse than ethyl chloride.
18. What is Raoult’s law? Explain in brief.
OR
Calculate the boiling point of a solution containing 18 g of C6H12O6 in 1kg water at 1.013 bar. The boiling point of pure water
is1000C and Kb of water is 0.52 K Kg/mol.
19. Complete the following :
1. C6H5NH2 +H 2SO4(conc) ------------
2. C6H5NH2+(CH3CO)2 O -------------
3. C6H5N2Cl + HBF4/NaNO2/Cu +heat-----------------
20. 1.Write the IUPAC name of OHCH2CH ClCHBrCH2OH
2. Distinguish between
a. Ethanol and methanol
b. Phenol and Ethanol
21. What are nucleic acids? Mention their two important functions.
22. Describe the contact process for the manufacture of sulphuric acid.
OR
How are xenon fluorides XeF2, XeF4,and XeF6 prepared?
23. Explain what is observed :
1. when a beam of light is passed through a colloidal sol.
2. an electrolyte NaCl is added to ferric hydroxide solution.
3. electric current is passed through a colloidal sol.
24. Calculate the emf of the following cell at 298 K:
Mg(s)I Mg2+(0.001M) II Cu 2+(1.00x10-4M) ICu(s)
Given E0 Cu2+ /Cu =+0.34 V and E0 Mg 2+ /Mg =-2.375 V.
25. Explain
1. Chromatography
2. Leaching
3. Mond process
26. How many ml of a 0.1MHCl are required to react completely with 1 g mixture of Na2CO3 and
NaHCO3 containing equimolar amounts of the two?
27. How would you account for the irregular variation of ionization enthalpies in the first series of the
transition elements?
28.a. Convert the followings into Benzoic acid
1. BromoBenzene
2.Phenyl ethene(styrene)
b. Describe the following with suitable chemical reactions:
1. Wolff Kishner reduction
2. Kolbe’s reaction
c. Write the IUPAC name of C6H5CH2COCH2CH3
Or
a. 1.Benzoic acid to m-Nitrobenzyl alcohol
2. Benzene to Methyl benzoate
b. Describe the following with suitable chemical reactions:
1. Friedel Crafts reaction
2. Hell-Volhard-Zelinsky reaction.
c. Write the IUPAC name of CH3CH 2CH3CH2C(CH3) 2CH2CHO .
29. a. What inspired N.Bartlett for carrying out reaction between Xe and PtF6 ?
b. Write balanced equations for the following:
1. NaCl is heated with sulphuric acid in the presence of MnO2.
2. Chlorine gas is passed into a solution of NaI in water.
OR
Give the answer of the following:
1. How is SO2 an air pollutant?.
2. Why does nitrogen show catenation properties less than phosphorus?
3. Give disproportionation reaction of H3PO3.
4. Why is Ka2 less than Ka1 for H2SO4 in water?
5. Why does ozone act as a powerful oxidizing agent?
30. a. State the role of activated complex in a reaction and state its relation with activation energy.
b. A certain reaction is 50% complete in 20 minutes at 300K and the same reaction is again 50%
complete in 5 minutes at 350K.Calculate the activation energy if it is a first order reaction.
Given R=8.314 J/K/mol
OR
a. Differentiate between integrated rate law and differential rate law.
b. During nuclear explosion ,one of the products is Sr90with half life of 28.1y.If 1µg of Sr90was absorbed in
the bones of a newly born baby instead of calcium ,how much of it will remain after 10 years if it is not lost metabolically.
1. All questions are compulsory.
2. Question nos. 1 to 8 are very short answer questions and carry 1 mark each.
3. Question nos. 9 to 18 are short answer questions and carry 2 marks each.
4. Question nos. 19 to 27 are also short answer questions and carry 3 marks each
5. Question nos. 28 to 30 are long answer questions and carry 5 marks each
6. Use log tables if necessary, use of calculators is not allowed.
1. Give preparation reaction for Neoprene.
2. What is colloidon?
3. Write the IUPAC name of [Ni(NH3)2Br2]
4. Why do we require artificial sweetening agents?
5. Why cannot vitamin C be stored in our body?
6. Give the structure and IUPAC name of monohydric phenol of molecular formula C7H8O?
7. What is meant by Schiff’s base?
8. Give an example of Gattermann reaction?
9. The unit cell of an element of atomic mass108 u and density 10.5g/cm3 is a cube with edge length
409 pm. Find the structure of the crystal lattice(simple ,fcc or bcc) Avogadro’s constant =6.022 X1023.
10. Explain the following:
1. Ferromagnetism
2. Paramagnetism
11. Explain the chemistry of fuel cell.
Or
Write the electrode reaction of the Leclanche cell.
12. Why is copper sulphate pentahydrate coloured ?
13.How is decron obtained from ethylene glycol and terphthalic acid? .
14. Differenciate between retention and inversion.
15. Describe antacids and non-narcotic analgesics. Give one example of each.
16. Draw figure to show splitting of degenerate d-orbitals in an octahedral crystal field.
17. Draw resonating structures of chlorobenzene showing the exact positions of the charges.
With the help of these structures, explain why is chlorobenzene difficult to hydrolyse than ethyl chloride.
18. What is Raoult’s law? Explain in brief.
OR
Calculate the boiling point of a solution containing 18 g of C6H12O6 in 1kg water at 1.013 bar. The boiling point of pure water
is1000C and Kb of water is 0.52 K Kg/mol.
19. Complete the following :
1. C6H5NH2 +H 2SO4(conc) ------------
2. C6H5NH2+(CH3CO)2 O -------------
3. C6H5N2Cl + HBF4/NaNO2/Cu +heat-----------------
20. 1.Write the IUPAC name of OHCH2CH ClCHBrCH2OH
2. Distinguish between
a. Ethanol and methanol
b. Phenol and Ethanol
21. What are nucleic acids? Mention their two important functions.
22. Describe the contact process for the manufacture of sulphuric acid.
OR
How are xenon fluorides XeF2, XeF4,and XeF6 prepared?
23. Explain what is observed :
1. when a beam of light is passed through a colloidal sol.
2. an electrolyte NaCl is added to ferric hydroxide solution.
3. electric current is passed through a colloidal sol.
24. Calculate the emf of the following cell at 298 K:
Mg(s)I Mg2+(0.001M) II Cu 2+(1.00x10-4M) ICu(s)
Given E0 Cu2+ /Cu =+0.34 V and E0 Mg 2+ /Mg =-2.375 V.
25. Explain
1. Chromatography
2. Leaching
3. Mond process
26. How many ml of a 0.1MHCl are required to react completely with 1 g mixture of Na2CO3 and
NaHCO3 containing equimolar amounts of the two?
27. How would you account for the irregular variation of ionization enthalpies in the first series of the
transition elements?
28.a. Convert the followings into Benzoic acid
1. BromoBenzene
2.Phenyl ethene(styrene)
b. Describe the following with suitable chemical reactions:
1. Wolff Kishner reduction
2. Kolbe’s reaction
c. Write the IUPAC name of C6H5CH2COCH2CH3
Or
a. 1.Benzoic acid to m-Nitrobenzyl alcohol
2. Benzene to Methyl benzoate
b. Describe the following with suitable chemical reactions:
1. Friedel Crafts reaction
2. Hell-Volhard-Zelinsky reaction.
c. Write the IUPAC name of CH3CH 2CH3CH2C(CH3) 2CH2CHO .
29. a. What inspired N.Bartlett for carrying out reaction between Xe and PtF6 ?
b. Write balanced equations for the following:
1. NaCl is heated with sulphuric acid in the presence of MnO2.
2. Chlorine gas is passed into a solution of NaI in water.
OR
Give the answer of the following:
1. How is SO2 an air pollutant?.
2. Why does nitrogen show catenation properties less than phosphorus?
3. Give disproportionation reaction of H3PO3.
4. Why is Ka2 less than Ka1 for H2SO4 in water?
5. Why does ozone act as a powerful oxidizing agent?
30. a. State the role of activated complex in a reaction and state its relation with activation energy.
b. A certain reaction is 50% complete in 20 minutes at 300K and the same reaction is again 50%
complete in 5 minutes at 350K.Calculate the activation energy if it is a first order reaction.
Given R=8.314 J/K/mol
OR
a. Differentiate between integrated rate law and differential rate law.
b. During nuclear explosion ,one of the products is Sr90with half life of 28.1y.If 1µg of Sr90was absorbed in
the bones of a newly born baby instead of calcium ,how much of it will remain after 10 years if it is not lost metabolically.
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