VIT – PAST PAPERSCHEMISTRY - UNSOLVED PAPER - 2008
SECTION – I   Single Correct Answer Type         There are five parts in this question. Four choices are given for each ...
01   Problem                       675K    ?      CH3CH3   HNO3     a. CH3CH2NO2     b. CH3CH2NO2     CH3NO2     c.   2CH3...
02   Problem     When acetamide is hydrolysed by boiling with acid, the product obtained is     a. acetic acid     b. ethy...
03   Problem     Which will not go for diazotization?     a. C 6H5NH2     b.   C 6H5 CH2NH2     c.     d.
04   Problem     Secondary nitro alkanes can be converted into ketones by using Y. Identify Y from     the following     a...
05   Problem     Alkyl cyanides undergo Stephen reduction to Produce     a. aldehyde     b. secondary a,lline     c.   pri...
06   Problem     The continuous phase contains the dispersed phase throughout, example is     a. water in milk     b. fat ...
07   Problem     The number of hydrogen atoms present in 25.5 g or sucrose C12H22O11   which     has a molar mass of 342.3...
08   Problem     Milk changes afLer digestion into     a. cellulose     b. Fructose     c.   glucose     d. lactose
09   Problem     Which of the follm,ing ser consists only of essential amino acids?     a. Alanine, tyrosine, cystine     ...
10   Problem     Which of the following is a ketohexose?     a.   Glucose     b.   Sucrose     c.   Fructose     d.   Ribose
11   Problem     The oxidation, number of oxygen in KO3 , Na2 O2 is:     a. 3, 2     b. 1, 0     c.   0, 1     d. - 0.33. -1
12   Problem     Reaction of PCl3 and PhMgBr would give     a. bromo benzene     b. chIorobenzene     c.   triphenylphosph...
13   Problem     Which of the following is not a characteristic of transition elements?     a. Variable oxidation states  ...
14   Problem     Cl – P – Cl bond angles in PCl5 molecule are     a. 120 and 90     b. 60 and 90     c. 60 and 120     d. ...
15   Problem     The magnetic moment of a salt containing ion is:     a. 0     b. 1.87     c.   5.92     d. 2
16   Problem     The number of formula units of calcium fluoride CaF2    , present in 146.4 g     of CaF2      (the molar ...
17   Problem     The IUPAC name of the given compound          Co NH3   5                                                 ...
18   Problem     When SCN- is added to an aqueous solution containing Fe(N03h, the ,complex ion     produced is           ...
19   Problem     Hair dyes contain     a. copper nitrate     b. gold chloride     c.   silver nitrate     d. copper sulphate
20   Problem     Schottky defects occurs mainly in eletrovalent compounds where     a. positive ions and negative ions are...
21   Problem                                                                   3                 3     The number of unpai...
22   Problem     The standard free energy change of a reaction is          G       115 kJ at 298 K. Calculate the equilibr...
23   Problem     If an endothermic reaction occurs spontaneously at constant temperature (T)     and pressure (p), then wh...
24   Problem     If a plot of log10 C   versus t gives a straight line for a given reaction, then the     reaction is     ...
25   Problem     A spontaneous process is one in which the system suffers     a. no energy change     b. a lowering of fre...
26   Problem     The half-life period of a first order reaction is 1 min 40 s. Calculate its rate     constant.     a. 6.9...
27   Problem                                                                             2    1     The molar conductiviti...
28   Problem     The electrochemical cell stops working after sometime because     a. electrode potential of both the elec...
29   Problem     The amount of electricity required to produce one mole of copper from copper     sulphate solution will b...
30   Problem     Dipping iron article into a strongly alkaline solution of sodium phosphate     a. does not affect the art...
31   Problem     Hydroboration oxidation of 4-methyl octane would give     a. 4-methyloctanol     b. 2-methyl decane     c...
32   Problem     When ethyl alcohol is heated with conc. H2SO 4 , the product obtained is     a. CH COOC H          3    2...
33   Problem     Anisole is the product obtained from phenol by the reaction known as     a. coupling     b. etherificatio...
34   Problem     Ethylene glycol gives oxalic acid on oxidation with     a. acidified K 2Cr2O7     b. acidified KMnO 4    ...
35   Problem     Diamond is hard because     a. all the four valence electrons are bonded to each carbon atoms by         ...
36   Problem     A Wittig reaction with an aldehyde gives     a. ketone compound     b. a long chain fatty acid     c.   o...
37   Problem     Cannizaro reaction is given by‘     a. HCHO     b.     c.     d. CH3CH2 OH
38   Problem                  Identify the reactant.     a. CH3 CHO     b. HCHO     c.   CO     d. H2 O
39   Problem     Maleic acid and fumaric acid are     a. position isomers     b. geometric isomers     c.   enantiomers   ...
40   Problem     The gas evolved on heating alkali formate with soda-lime is     a. CO     b. CO 2     c.   hydrogen     d...
FOR SOLUTION VISIT WWW.VASISTA.NET
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VIT - Chemistry -2008 Unsolved Paper

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VIT - Chemistry -2008 Unsolved Paper

  1. 1. VIT – PAST PAPERSCHEMISTRY - UNSOLVED PAPER - 2008
  2. 2. SECTION – I Single Correct Answer Type  There are five parts in this question. Four choices are given for each part and one of them is correct. Indicate you choice of the correct answer for each part in your answer-book by writing the letter (a), (b), (c) or (d) whichever is appropriate
  3. 3. 01 Problem 675K ? CH3CH3 HNO3 a. CH3CH2NO2 b. CH3CH2NO2 CH3NO2 c. 2CH3NO2 d. 2CH3NO2
  4. 4. 02 Problem When acetamide is hydrolysed by boiling with acid, the product obtained is a. acetic acid b. ethyl amine c. ethanol d. acetamide
  5. 5. 03 Problem Which will not go for diazotization? a. C 6H5NH2 b. C 6H5 CH2NH2 c. d.
  6. 6. 04 Problem Secondary nitro alkanes can be converted into ketones by using Y. Identify Y from the following a. aqueous HCl b. aqueous NaOH c. KMnO 4 d. CO
  7. 7. 05 Problem Alkyl cyanides undergo Stephen reduction to Produce a. aldehyde b. secondary a,lline c. primary amine d. amide
  8. 8. 06 Problem The continuous phase contains the dispersed phase throughout, example is a. water in milk b. fat in milk c. water droplets in mist d. coil in water
  9. 9. 07 Problem The number of hydrogen atoms present in 25.5 g or sucrose C12H22O11 which has a molar mass of 342.3 g is a. 22 x 1023 b. 9.91 x 1023 c. 11 x 1023 d. 44 x 1023 H atoms
  10. 10. 08 Problem Milk changes afLer digestion into a. cellulose b. Fructose c. glucose d. lactose
  11. 11. 09 Problem Which of the follm,ing ser consists only of essential amino acids? a. Alanine, tyrosine, cystine b. Leucine, lysine, tryptophane c. Alanine, glutamine, lycine d. leucine, proline, glycine
  12. 12. 10 Problem Which of the following is a ketohexose? a. Glucose b. Sucrose c. Fructose d. Ribose
  13. 13. 11 Problem The oxidation, number of oxygen in KO3 , Na2 O2 is: a. 3, 2 b. 1, 0 c. 0, 1 d. - 0.33. -1
  14. 14. 12 Problem Reaction of PCl3 and PhMgBr would give a. bromo benzene b. chIorobenzene c. triphenylphosphine d. dichlorobenzene
  15. 15. 13 Problem Which of the following is not a characteristic of transition elements? a. Variable oxidation states b. Formation of coloured compounds c. Formation of interstitial compounds d. Natural radioactivity
  16. 16. 14 Problem Cl – P – Cl bond angles in PCl5 molecule are a. 120 and 90 b. 60 and 90 c. 60 and 120 d. 60 and 120
  17. 17. 15 Problem The magnetic moment of a salt containing ion is: a. 0 b. 1.87 c. 5.92 d. 2
  18. 18. 16 Problem The number of formula units of calcium fluoride CaF2 , present in 146.4 g of CaF2 (the molar mass of CaF2 is 78.08 g/mol) is a. 1.129 x 1024 CaF2 b. 1.146 x 1024 CaF2 c. 7.808 x 1024 CaF2 24 d. 1.877 x 10 CaF2
  19. 19. 17 Problem The IUPAC name of the given compound Co NH3 5 Cl Cl2 is: a. penta amino cobalt chloride chlorate b. c,obalt penta ammine chloro chloride c. pentamine chIaro cobalt (III) chloride d. penta amino cobalt (III) chlorate
  20. 20. 18 Problem When SCN- is added to an aqueous solution containing Fe(N03h, the ,complex ion produced is 2 a. Fe OH2 2 SCN 2 b. Fe OH2 5 SCN 2 c. Fe OH2 8 SCN 6 d. Fe OH2 SCN
  21. 21. 19 Problem Hair dyes contain a. copper nitrate b. gold chloride c. silver nitrate d. copper sulphate
  22. 22. 20 Problem Schottky defects occurs mainly in eletrovalent compounds where a. positive ions and negative ions are of different size b. positive ions and negative ions are of same size c. positive ions are small and negative ions are big d. positive ions are big and negative ions are small
  23. 23. 21 Problem 3 3 The number of unpaired electrons calculated in Co NH3 and Co F6 6 are a. 4 and 4 b. 0 and 2 c. 2 and 4 d. 0 and 4
  24. 24. 22 Problem The standard free energy change of a reaction is G 115 kJ at 298 K. Calculate the equilibrium constant . K p in log K p R 8.314 Jk 1mol 1 a. 20.16 b. 2.303 c. 2.016 d. 13.83
  25. 25. 23 Problem If an endothermic reaction occurs spontaneously at constant temperature (T) and pressure (p), then which of the following is true? a. G 0 b. >0 c. S>0 d. S<0
  26. 26. 24 Problem If a plot of log10 C versus t gives a straight line for a given reaction, then the reaction is a. zero order b. first order c. second order d. third order
  27. 27. 25 Problem A spontaneous process is one in which the system suffers a. no energy change b. a lowering of free energy c. a lowering of entropy d. an increase in internal energy
  28. 28. 26 Problem The half-life period of a first order reaction is 1 min 40 s. Calculate its rate constant. a. 6.93 x10 3 min 1 3 -1 b. 6.93 x 10 s 3 c. 6.93 x 10 s 3 d. 6.93 x 10 s
  29. 29. 27 Problem 2 1 The molar conductivities of KCl, NaCl and KNO3 are 152, 128 and 111 S cm mol respectively. What is the molar conductivity of NaNO3 ? a. 101 S cm2 mol 1 2 1 b. 87 S cm mol c. 101 S cm2 mol 1 d. 391 S cm2 mol 1
  30. 30. 28 Problem The electrochemical cell stops working after sometime because a. electrode potential of both the electrodes becomes zero b. electrode potential of both the electrodes becomes equal c. one of the electrodes is eaten away d. the cell reaction gets reversed
  31. 31. 29 Problem The amount of electricity required to produce one mole of copper from copper sulphate solution will be a. 1 F b. 2.33 F c. 2F d. 1.33 F
  32. 32. 30 Problem Dipping iron article into a strongly alkaline solution of sodium phosphate a. does not affect the article b. forms Fe2 O3 .xH2 O on the surface c. forms iron phosphate film d. forms femc hydroxide
  33. 33. 31 Problem Hydroboration oxidation of 4-methyl octane would give a. 4-methyloctanol b. 2-methyl decane c. 4-methyl heptanol d. 4-methyl-2-octanone
  34. 34. 32 Problem When ethyl alcohol is heated with conc. H2SO 4 , the product obtained is a. CH COOC H 3 2 5 b. C2H2 c. C2H6 d. C2H4
  35. 35. 33 Problem Anisole is the product obtained from phenol by the reaction known as a. coupling b. etherification c. oxidation d. esterification
  36. 36. 34 Problem Ethylene glycol gives oxalic acid on oxidation with a. acidified K 2Cr2O7 b. acidified KMnO 4 c. alkaline KMnO 4 d. periodic acid
  37. 37. 35 Problem Diamond is hard because a. all the four valence electrons are bonded to each carbon atoms by covalent bonds b. it is a giant molecule c. it is made up of carbon atoms d. it cannot be burnt
  38. 38. 36 Problem A Wittig reaction with an aldehyde gives a. ketone compound b. a long chain fatty acid c. olefin compound d. epoxide
  39. 39. 37 Problem Cannizaro reaction is given by‘ a. HCHO b. c. d. CH3CH2 OH
  40. 40. 38 Problem Identify the reactant. a. CH3 CHO b. HCHO c. CO d. H2 O
  41. 41. 39 Problem Maleic acid and fumaric acid are a. position isomers b. geometric isomers c. enantiomers d. functional isomers
  42. 42. 40 Problem The gas evolved on heating alkali formate with soda-lime is a. CO b. CO 2 c. hydrogen d. water vapour
  43. 43. FOR SOLUTION VISIT WWW.VASISTA.NET

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