2014 12 Lyp Chemistry 04 Outside Delhi Sol 9ne
2014 12 Lyp Chemistry 04 Outside Delhi Sol 9ne
2014 12 Lyp Chemistry 04 Outside Delhi Sol 9ne
Chemistry - 2014
Outside Delhi- SET (56 /1)
1
1
1
4
2Chlorobutane
or
Proteins
6.
Diazotization
7.
8.
9.
Given; d = 2.8g/cm3 ;
d=
M=
Z=4
a = 4 x 108 cm
or
M=
(i) Metal excess defect / Metal excess defect due to anionic vacancies filled by free electrons 1
/ Due to F centers.
(ii) Schottky defect.
1
Or
10
OR
radius ratio (r
/r -) for Tetrahedral void is 0.225 & radius ratio for octahedral voids is
0.414
(ii) A regular three dimensional arrangement of points in space is called a crystal lattice.
Unit cell is the smallest portion of a crystal lattice which, when repeated in three
directions, generates an entire lattice. / unit cell is the miniature of crystal lattice /
microscopic edition of the crystal lattice.
11
Kohlrausch law of independent migration of ions. The law states that limiting molar 1
conductivity of an electrolyte can be stated as the sum of the individual contributions of the
anion and cation of the electrolyte.
On dilution,the conductivity () of the electrolyte decreases as the number of ions per unit 1
volume of solution decreases.
12
13
(ii) slope = -k
In this method, the impure metal is made to act as anode. A strip of the same metal in pure 1
form is used as cathode. They are put in a suitable electrolytic bath containing soluble salt of
the same metal. Pure metal is deposited at the cathode and impurities remain in the solution.
14
(i) P4 + H2O
XeF6 + O2.
15
16
1+1
Reimer-Tiemann reaction
1
Williamson synthesis
1
17
HBr H+ + Br
Or
( where R = -CH3)
18
F = 96500C mol
-1
rGO = n x F x EoCell
SO2 Cl2
At t = 0s
0.4 atm
At t = 100s
(0.4 x) atm
SO2
0 atm
x atm
Cl2
0 atm
x atm
Pt = 0.4 x + x + x
Pt = 0.4 + x
0.7 = 0.4 + x
x = 0.3
k=
2.303
t
log
"#
$"# %"&
k=
k=
k=
21
2.303
t
2.303
100s
$.)*)
+**,
log
log
0.4
0.8-0.7
0.4
0.1
These are liquid-liquid colloidal systems or the dispersion of one liquid in another liquid.
Types: (i) Oil dispersed in water (O/W type) Example; milk and vanishing cream
(ii) Water dispersed in oil (W/O type) Example; butter and cream.
(ii) This is due to very small size of Oxygen atom / repulsion between electrons is large in 1
relatively small 2p sub-shell.
23
(iii) In [NiCl4]2 ; Cl acts as weak ligand therefore does not cause forced pairing, thus
electrons will remain unpaired hence paramagnetic.
In [Ni(CO)4] ; CO acts as strong ligand therefore causes forced pairing, thus electrons will
become paired hence diamagnetic.
24
(a)
(i) As primary amines form inter molecular H bonds, but tertiary amines dont form H 1
bonds.
(iii) This is because of the combined effect of hydration and inductive effect (+I effect).
Or
25
(i) C6H5NO2
-./012
C6H5NH2
34 /012 ; $6)7
A
(ii) CH3CN
04 3 / 09
C6H5N2+Cl
04 3
CH3COOH
CH3CONH2
C6H5OH
C
:;4 / 730
+
+
CH3NH2
+
+
26
(i) Peptide linkage is an amide formed between COOH group and NH2 group ( -CO-NH- )
(ii) Specific sequence of amino acids in a polypeptide chain is said to be the primary 1
structure of the protein.
(iii) When a protein in its native form, is subjected to change in temperature or change in pH, 1
protein loses its biological activity. This is called denaturation of protein
27
28
(a)
(i) Molarity is defined as number of moles of solute dissolved in one litre of solution.
(b)
urea = glucose
<=>?@
=>?@ AB
<=>?@
=>?@
<CD=EFB?
<CD=EFB?
W Glucose =
CD=EFB? AB
or
CD=EFB?
I*J KL2MN
+GH
<
CD=EFB?
= +O*J KL2
MN
= 45g
OR
28
It is due to weaker interaction between acetone and ethanol than ethanol-ethanol interactions.
M=
L2.WQ.
+* +.$ +*
M=
+O*
= 0.66 M
or
0.66 mol/L
< (U. J)
+* +***
+O* [*
= 0.61m
29
<X +***
m=
m=
& d = 1.2g/m L
or 0.61mol/kg
2CrO42 + H2O
1
1
MnO2 + 2H2O
(ii) This is due to smaller ionic sizes / higher ionic charge and availability of d orbitals.
(iii) because Mn +2 is more stable(3d5) than Mn3+ (3d4). Cr+3 is more stable due to t2g3 / d3 1
configuration.
Or
29
(i)
Lanthanoids
Actinoids
Atomic / ionic radii does not show much Atomic / ionic radii show much variation /
variation / +3 is the most common oxidation Besides +3 oxidation state they exibit
state, in few cases +2 & +4
+4,+5,+6,+7 also.
Mn2+ + 4H2O
Because Mn3+ has 4 unpaired electrons (3d4) therefore more paramagnetic whereas Cr3+ has 3
30
(a) (i)
1
1
(ii) CH3CH=NOH
(iii)
1
(b) (i) Add neutral FeCl3 in both the solutions, phenol forms violet colour but benzoic acid 1
does not.
1
(ii) Tollens reagent test: Add ammoniacal solution of silver nitrate (Tollens reagent) in
both the solutions propanal gives silver mirror whereas propanone does not.
(or any other correct test)
OR
30
(a) (i) As Cl acts as electron withdrawing group ( I effect) ,CH3 shows +I effect.
Or
RCOCl
04 / \ %: -3]
RCHO +HCl.
Or With bezaldehyde
(c) CH3CH2CH2COCH3.