Fabricated in isro lab at room temperature of 30c if

fabricated in ISRO lab at room temperature of 30°C. If the radius of all wires in the instrument
was 0.1 mm (as measured in ISRO lab). If the maximum allowable length (as measured in ISRO
lab) of any wire is approximately

meter then find
1
.

22
Take
7
 
 
 
 
. (Assume that resistivity
and length of gold wire change linearly with temperature)
You can use these properties of gold.
 Resistivity at room temperature  = 2.2 × 10
–8
 m
 Temperature coefficient of resistivity  = 0.0032 K
–1
 Linear thermal expansion coefficient  = 1.5 × 10
–5
K
–1
.
17. The network shown consists of an infinite number of cells of emf
1
 and
2
 with corresponding
internal resistances r
1
and r
2
respectively A resistor R = 1  is connected to the end of the
network. If the values of the emfs and internal resistances are 
1
= 1.0 V, 
2
= 2.0 V, r
1
= 4  and
r
2
= 6  . If the current flowing through the resistor R is I ampere, then find 10 I.
R

2
r
2
r
1

1

2
r
2
r
1

1
18. A thin non conducting disc of mass M = 2 kg, charge Q = 2 × 10
–2
C
and radius
1
R m
6
 is placed on a frictionless horizontal plane with
its centre at the origin of the coordinate system. A non uniform, radial
magnetic field
0
ˆ
B B r 

exists in space, where B
0
= 10 T and the disc
is rotated with an angular velocity
2
x 10    rad/sec about an axis
passing through its centre and perpendicular to its plane, as shown
in the figure. At what value of x the disc will lift off from the surface.
y
x
w
0
ˆ B B r 


AITS-PT-II (Paper-1)-PCM-JEE(Advanced)/20 9
C h e m i s t r y
PART – II
SECTION – A
(More Than One Correct Type)
This section contains 7 multiple choice questions. Each question has 4 choices (A), (B), (C) and (D) for
its answer, out of which ONE OR MORE is/are correct.
19.
3
CHCl NaOH

  
N
H
Product (s) formed is/are
(A)
N
H
CHO
(B)
N
Cl
(C)
N
CHO
(D)
N
H
CHO
20. Which of the following statement is/are correct?
FIITJEE Ltd.,
FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax [phone]
website:
21. Which of the following transformation(s) is/are possible by aq. NaOH in presence or absence of
heating
(A)
O
 
HCHO excess  
OH
CH
2
OH
CH
2
OH
CH
2
OH
HOH
2
C
HCOO Na
 

(B)
O
Ph
Me

OH Ph
Me

AITS-PT-II (Paper-1)-PCM-JEE(Advanced)/20
FIITJEE Ltd.,
FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax [phone]
website:
10
(C)
O
O

O
(D)

NO
2
NO
2
Br
NO
2
NO
2
OH