Time: 3-15 hours Max Marks: 70
No.of Pages: 02 CHEMISTRY (34) Total No.of Ques.: 37
General Instructions:
iThequestion paper has four parts A, B, C, and D. All the parts arecompulsory
ii]Write balanced chemical cquations and draw diagrams wherever necessary
iv Use log tables and simple calculators if necessary. (Use of scientific calculators are not allowed)
PART-A
Answer All the questions in one word or in a sentence.Each question carries
one mark. 10x1=10
1) State Henry's law.
2) What are Isotonic solutions?
3) What is a primary battery?
4) In a reaction R-> Products, theconcentration of reactant is doubled, the rate
of reaction remains same, what is the order of the reaction?
During synthesis of ammonia by Haber's process, in this reaction is it
homogeneous or heterogeneous catalysis?
6) Mention the role of silica during the extraction of copper from copper
Pyrites
7) Complete the following reaction,XeF,+2H,0, + 4HF.
8) R-X+Nal>R-I+ NaX in dry acetone. Namethe reaction.
9) Give an example for mixed ketone/
10) How many peptide bonds are present in a tetrapeptide?
PART-B
Answer any FIVE of the following questions,Each question carries 2 marks.
5x2-10
11) Give any two differences between Schottky defect and Frenkel defct.
12) What is Strong electrolyte? Give an example.
13) A first order reaction is found to have a rate constant 5.5 x 10 per second.
Calculate the half- life of the reaction.
14) Compare the chemistry of the actionoids with that of lanthanoids with
reference to (i) electronic configuration and (ii) Oxidation states.
15) Explain the oxidation of Phenol with chromic acid in air. Give reaction.
16) Write the reaction involved two molecules of benzaldehyde reacted each other
in presence of strong base. Name the reaction.
17) What are tranquilizers? Give an example.
18) What is Saponification? Write chemical reaction for preparation of
soaps.
PARTC
IIAnswer any FIVE of the following questions. Each question carries 3 marks.
5x3-15
19) a]How do you refine nickel by Mond's process.
b]Give the composition of bauxite. (2+1)
20) Describe the manufacture of nitric acid by Ostwald's process.
21) How is SO, prepared from sulphite ? Explain it action with chlorine.
22) Write chemical equations for the following reactions.
i) Chlorine reacts with cold and dil NaOH.
ii)Chlorine reacts with dry slaked lime [ Ca(OH),]
ii) Hydrochloric acid is treated with ammonia.
23)
23) Give reason for the following.
i) Transition mctal and their compounds are acts as good catalyst.
ii) Cu is a diamagnetic and Cu" is a paramagnetic.
P.T.O.
, 24) How does the acidified permanganate solution react with (i) Iron (1) lons
and (ii) C,0 (ii) I.
25) What is meant by crystal field splitting? Draw a figure to shovw the splitting
of d-Orbital in a tetrahedral crystal field.
26) Givethe geometry. hybridisation and magnctic property of|Co(NH)P based
on VBT.
PART-D
V Answer any THREE of the following questions.Each question carries 5 marks.
3x5-15
27) al Give the classification of molecular solids. 3
bJ Calculate the number of particles present per unit cell in a BCC unit cell. 2
28) al 5.08g of ascorbic acid (vitaminc) to be dissolved in 75g ofethanoic acid to
lower its melting point by 1.5K. Calculate the molar mass of ascorbic acid.
(Given k= 3.9K Kg mol')
bJ Write any two differences between non-Ideal solutions with positive
deviation and negative deviation from Raoult's law.
29) al A0.IM formic acid solution when placed between two clectrodes, each
having an area of 2.5cm and separated by 0.8cm, has a resistance of 6956
ohms.calculate the conductivityand molar conductance ofthe solution. 3
bJWrite the relationship between standard Gibbs energy and E'cel. 2
30) al Derive an integrated rate equation for the velocity constant for a first order
reaction. 3
b] Draw a graph of potential energy versus reaction co-ordinate to show the
effect of catalyst on activation energy.
31) a Describe electrophoresis with the help of a
diagram.
b] What are Lyophilic and Lyophobic sols?
Answer any FOUR of the following questions.Each question carries 5 nmarks.
4x5-20
32) a] How do you convert an arylhalide to diphenyl?
Write the equation and name the reaction.
b] What is Optical isomerism? Give an example.
33) al Write the mechanism involved in the conversion of ethanol to ethene.
3
b] Explain with equation.Kolbe's reaction.
34) al Complete the following reactions
i) R-Mg-X+>RCOOMg X _ ii)R-C-0+ HCN
b Write the effect of following group on acidic strength of -COOH.
(i)-CH, and (i) -CI
35) al What is Hinsberg's reagent ? How is it used to test for
primary amine and
secondary amine?
-N=NCI CuCVHC X+N, what is X? and name the reaction. 2
36) al Name the three major classes of carbohydrates based on hydrolysis.
b] Give an example each for i) acidic a-amino and neutral amino acid
37) al What is Condensation polymerization? Give an example
b Name the monomers and the
partial structure of Bakalite.
c]Give an example of Synthetic rubber.
No.of Pages: 02 CHEMISTRY (34) Total No.of Ques.: 37
General Instructions:
iThequestion paper has four parts A, B, C, and D. All the parts arecompulsory
ii]Write balanced chemical cquations and draw diagrams wherever necessary
iv Use log tables and simple calculators if necessary. (Use of scientific calculators are not allowed)
PART-A
Answer All the questions in one word or in a sentence.Each question carries
one mark. 10x1=10
1) State Henry's law.
2) What are Isotonic solutions?
3) What is a primary battery?
4) In a reaction R-> Products, theconcentration of reactant is doubled, the rate
of reaction remains same, what is the order of the reaction?
During synthesis of ammonia by Haber's process, in this reaction is it
homogeneous or heterogeneous catalysis?
6) Mention the role of silica during the extraction of copper from copper
Pyrites
7) Complete the following reaction,XeF,+2H,0, + 4HF.
8) R-X+Nal>R-I+ NaX in dry acetone. Namethe reaction.
9) Give an example for mixed ketone/
10) How many peptide bonds are present in a tetrapeptide?
PART-B
Answer any FIVE of the following questions,Each question carries 2 marks.
5x2-10
11) Give any two differences between Schottky defect and Frenkel defct.
12) What is Strong electrolyte? Give an example.
13) A first order reaction is found to have a rate constant 5.5 x 10 per second.
Calculate the half- life of the reaction.
14) Compare the chemistry of the actionoids with that of lanthanoids with
reference to (i) electronic configuration and (ii) Oxidation states.
15) Explain the oxidation of Phenol with chromic acid in air. Give reaction.
16) Write the reaction involved two molecules of benzaldehyde reacted each other
in presence of strong base. Name the reaction.
17) What are tranquilizers? Give an example.
18) What is Saponification? Write chemical reaction for preparation of
soaps.
PARTC
IIAnswer any FIVE of the following questions. Each question carries 3 marks.
5x3-15
19) a]How do you refine nickel by Mond's process.
b]Give the composition of bauxite. (2+1)
20) Describe the manufacture of nitric acid by Ostwald's process.
21) How is SO, prepared from sulphite ? Explain it action with chlorine.
22) Write chemical equations for the following reactions.
i) Chlorine reacts with cold and dil NaOH.
ii)Chlorine reacts with dry slaked lime [ Ca(OH),]
ii) Hydrochloric acid is treated with ammonia.
23)
23) Give reason for the following.
i) Transition mctal and their compounds are acts as good catalyst.
ii) Cu is a diamagnetic and Cu" is a paramagnetic.
P.T.O.
, 24) How does the acidified permanganate solution react with (i) Iron (1) lons
and (ii) C,0 (ii) I.
25) What is meant by crystal field splitting? Draw a figure to shovw the splitting
of d-Orbital in a tetrahedral crystal field.
26) Givethe geometry. hybridisation and magnctic property of|Co(NH)P based
on VBT.
PART-D
V Answer any THREE of the following questions.Each question carries 5 marks.
3x5-15
27) al Give the classification of molecular solids. 3
bJ Calculate the number of particles present per unit cell in a BCC unit cell. 2
28) al 5.08g of ascorbic acid (vitaminc) to be dissolved in 75g ofethanoic acid to
lower its melting point by 1.5K. Calculate the molar mass of ascorbic acid.
(Given k= 3.9K Kg mol')
bJ Write any two differences between non-Ideal solutions with positive
deviation and negative deviation from Raoult's law.
29) al A0.IM formic acid solution when placed between two clectrodes, each
having an area of 2.5cm and separated by 0.8cm, has a resistance of 6956
ohms.calculate the conductivityand molar conductance ofthe solution. 3
bJWrite the relationship between standard Gibbs energy and E'cel. 2
30) al Derive an integrated rate equation for the velocity constant for a first order
reaction. 3
b] Draw a graph of potential energy versus reaction co-ordinate to show the
effect of catalyst on activation energy.
31) a Describe electrophoresis with the help of a
diagram.
b] What are Lyophilic and Lyophobic sols?
Answer any FOUR of the following questions.Each question carries 5 nmarks.
4x5-20
32) a] How do you convert an arylhalide to diphenyl?
Write the equation and name the reaction.
b] What is Optical isomerism? Give an example.
33) al Write the mechanism involved in the conversion of ethanol to ethene.
3
b] Explain with equation.Kolbe's reaction.
34) al Complete the following reactions
i) R-Mg-X+>RCOOMg X _ ii)R-C-0+ HCN
b Write the effect of following group on acidic strength of -COOH.
(i)-CH, and (i) -CI
35) al What is Hinsberg's reagent ? How is it used to test for
primary amine and
secondary amine?
-N=NCI CuCVHC X+N, what is X? and name the reaction. 2
36) al Name the three major classes of carbohydrates based on hydrolysis.
b] Give an example each for i) acidic a-amino and neutral amino acid
37) al What is Condensation polymerization? Give an example
b Name the monomers and the
partial structure of Bakalite.
c]Give an example of Synthetic rubber.
