1. VIT – PAST PAPERS
CHEMISTRY - UNSOLVED PAPER - 2008
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. 01 Problem
675K ?
CH3CH3 HNO3
a. CH3CH2NO2
b. CH3CH2NO2 CH3NO2
c. 2CH3NO2
d. 2CH3NO2
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. 03 Problem
Which will not go for diazotization?
a. C 6H5NH2
b. C 6H5 CH2NH2
c.
d.
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. 05 Problem
Alkyl cyanides undergo Stephen reduction to Produce
a. aldehyde
b. secondary a,lline
c. primary amine
d. amide
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. 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. 08 Problem
Milk changes afLer digestion into
a. cellulose
b. Fructose
c. glucose
d. lactose
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. 10 Problem
Which of the following is a ketohexose?
a. Glucose
b. Sucrose
c. Fructose
d. Ribose
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. 12 Problem
Reaction of PCl3 and PhMgBr would give
a. bromo benzene
b. chIorobenzene
c. triphenylphosphine
d. dichlorobenzene
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. 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. 15 Problem
The magnetic moment of a salt containing ion is:
a. 0
b. 1.87
c. 5.92
d. 2
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. 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. 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. 19 Problem
Hair dyes contain
a. copper nitrate
b. gold chloride
c. silver nitrate
d. copper sulphate
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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 33 Problem
Anisole is the product obtained from phenol by the reaction known as
a. coupling
b. etherification
c. oxidation
d. esterification
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. 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. 36 Problem
A Wittig reaction with an aldehyde gives
a. ketone compound
b. a long chain fatty acid
c. olefin compound
d. epoxide
39. 37 Problem
Cannizaro reaction is given by‘
a. HCHO
b.
c.
d. CH3CH2 OH
40. 38 Problem
Identify the reactant.
a. CH3 CHO
b. HCHO
c. CO
d. H2 O
41. 39 Problem
Maleic acid and fumaric acid are
a. position isomers
b. geometric isomers
c. enantiomers
d. functional isomers
42. 40 Problem
The gas evolved on heating alkali formate with soda-lime is
a. CO
b. CO 2
c. hydrogen
d. water vapour
