VIT - Chemistry -2010 Unsolved Paper
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VIT – PAST PAPERS
CHEMISTRY - UNSOLVED PAPER - 2010
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
01The correct formula of the complex tetraammineaquachlorocobalt (III) chloride
is
a.
b.
c.
d.
Problem
2 3 4Cl H O NH Co Cl
2 3 4CoCl H O NH Cl
3 24Co NH H O Cl Cl
2 3 24CoCl H O NH Cl
02The equivalent conductance at infinite dilution of a weak acid such as HF
a. can be determined by extrapolation of measurements on dilute solutions of
HCl, HBr and HI
b. can be determined by measurement on very dilute HF solutions
c. can best be determined from measurements on dilute solutions of NaF,NaCl
and HCl
d. is an undefined quantity
Problem
Problem03
The product 'A' is
a. succinic acid
b. melonic acid
c. oxalic acid
d. maleic acid
2
4
3
BrAlcoholic KCN 2 5 KOH CCl
H O
C H X Y Z
|
A
Problem04For a reaction of type , it is observed that doubling
concentration of A causes the reaction rate to be four times as great, but
doubling amount of B does not affect the rate. The unit of rate constant is
a.
b.
c.
d.
A B products
1s
1 1s mol L
1 1s mol L
1 2 2s s mol L
Problem05A chemical reaction was carried out at 320 K and 300 K. The rate constants were
found to be
respectively. Then
a.
b.
c.
d.
1 2k and k
2 1k 4k
2 1k 2k
2 1k 0.25 k
2 1k 0.5 k
Problem06The formula of ethyl carbinol is
a.
b.
c.
d.
3CH OH
3 2CH CH OH
3 2 2CH CH CH OH
3 3CH COH
Problem07Which of the following gives red colour in Victor Meyer's test?
a. n-propyl alcohol
b. Isopropyl alcohol
c. tert-butyl alcohol
d. see-butyl alcohol
Problem08Enthalpy of a compound is equal to its
a. heat of combustion
b. heat of formation
c. heat of reaction
d. heat of solution
Problem09For which one of the following reactions will there be a positive 6.S?
a.
b.
c.
d.
2 2H O g H O l
2 2H I 2HI
3 2CaCO s CaO s CO g
2 2 3N g 3H g 2NH g
Problem10Across the lanthanide series, the basicity of the lanthanide hydroxides
a. increases
b. decreases
c. first increases and then decreases
d. first decreases and then increases
Problem11When p-nitrobromobenzene reacts with sodium ethoxide, the product
obtained is
a. p-nitroanisole
b. ethyl phenyl ether
c. p-nitrophenetole
d. no reaction occurs
Problem12. A radioactive element X emits
Element X is
a.
b.
c.
d.
235763 , 1 and 1 particles and forms Y
24781X
24780X
246 81X
24680X
Problem13For the reaction, the equilibrium
constant, at 300 K is 16.0.The value of for
is
a. 8
b. 0.25
c. 0.125
d. 32
2 22A g B g 2AB g
pK pK 2 2AB g A g 1 / 2B g
Problem14Frenkel defect is generally observed in
a. AgBr
b. AgI
c. ZnS
d. All of the above
Problem15Most crystals show good cleavage because their atoms, ions or molecules are
a. weakly bonded together
b. strongly bonded together
c. spherically symmetrical
d. arranged in planes
Problem16 exhibit which type of isomerism?
a. Geometrical
b. Optical
c. Linkage
d. Ionisation
3 2 2 3 24 4Co NH Cl NO and Co NH ClNO Cl
Problem17Which of the following compounds is not coloured?
a.
b.
c.
d.
2 4Na Cu Cl
4
Na Cd Cl
4 6K Fe CN
3 6K Fe CN
Problem18Which of the following is a Waterman aldehyde synthesis?
a.
b.
c.
d.
Problem19Aldol is
a.
b.
c.
d. None of the above
-hydroxybutyraldehyde
hydroxybutanal
hydroxypropanal
Problem20Nitrobenzene can be converted into azobenzene by reduction with
a.
b.
c. Zn/NaOH
d.
4Zn, NH Cl,
3Zn / NaOH, CH OH
4LiAlH , ether
Problem21The onewhich ideas' basic is
a.
b.
c.
d.
3NH
6 5 2C H NH
6 5 3C H N
6 5 2C H NH
Problem22Coordination number of Ni in is
a. 3
b. 6
c. 4
d. 5
4
2 4 3Ni C O
Problem23Mg is an important component of which biomolecule occurring extensively in
living world?
a. Haemoglobin
b. Chlorophyll
c. Florigen
d. ATP
Problem24Sterling silver is
a.
b.
c. Alloy of 80% Ag + 20% Cu
d. AgCl
3AgNO
2Ag S
Problem25Identify the statement which is not correct regarding
a. It reacts with KI to give iodine
b. It reacts with KCl to give
c. It reacts with NaOH and glucose to give
d. It gives CuO on strong heating in air
4CuSO
2 2Cu Cl
2Cu O
Problem26Transition metals usually exhibit highest oxidation states in their
a. chlorides
b. fluorides
c. bromides
d. iodides
Problem27The number of Faradays needed to reduce 4 g equivalents of to Cu metal will
be
a. 1
b. 2
c. 1/2
d. 4
2Cu
Problem28Which one of the following cells can convert chemical energy of H; and Oz
directly into electrical energy?
a. Mercury cell
b. Daniela cell
c. Fuel cell
d. Lead storage cell
Problem29On treatment of prop an one with dilute , the product formed is
a. aldol
b. Phorone
c. propionaldehyde
d. 4-hydroxy-4- methyl-2-pentanone
2
Ba OH
Problem30Which of the following converts ?
a. NaBr
b. NaOBr
c.
d. None of the above
3 2 3 2CH CONH to CH NH
2Br
Problem31Which metal, aprons are worn by radiographer to protect him from radiation?
a. Mercury coated apron
b. Lead apron
c. Copper apron
d. Aluminimised apron
Problem32The standard Gibb's free energy change, is related to equilibrium constant,
as
a.
b.
c.
d.
pK RT ln 1G
G
p
eK
RT
p
GK
RT
G /RTpK e
1G
pK
Problem33The yield of the product in the reaction would be
higher at
a. high temperature and high pressure
b. high temperature and low pressure
c. low temperature and high pressure
d. low temperature and low pressure
2A g 2B g C g Q kJ
Problem34In which of the following case, does the reaction go farthest to completion?
a.
b. K = 10
c.
d. K=1
2K 10
-2K 10
Problem35Formation of cyanohydrin from a ketone is an example of
a. electrophilie addition
b. nucleophilic addition
c. nucleophilic substitution
d. electrophilic substitution
Problem36Glycerol on treatment with oxalic acid at forms
a. formic acid
b. allyl alcohol
c.
d. acrolein
2CO and CO
110 C
Problem37The activity of an old piece of wood is just 25% of the fresh piece of wood.
If of C-14 is 6000 yr, the age of piece of wood is
a. 6000 yr
b. 3000 yr
c. 9000 yr
d. 12000 yr
1/2t
Problem38The radius of is 95 pm and that of ion is 181 pm. Hence, the coordination
number of will be
a. 4
b. 6
c. 8
d. unpredictable
Na
Cl
Problem39The reaction , in the presence of , gives the following
product
a.
b.
c.
d.
2 2ROH H CN 4HBF
3ROCH
2RCH OH
2 2ROHCN N
2 3RCH CH
Problem40The fatty acid which shows reducing property is
a. acetic acid
b. Ethiopic acid
c. oxalic acid
d. Formic acid
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