Entrance Test For Biotechnology Page 17
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23105. A
chemical
was
heated
in
dry
form
along
with
copper
oxide
and
the
emanating
g asses
were
directed
towards
a
solution
of
lime
water.
It
was
observed
that
the
l ime
w ater
t urned
t urbid
a nd
a ffine
p recipitate
w as
o bserved.
T his
i ndicated
t hat
t he
o riginal
c hemical
h ad:
a) Sulphur
b) Carbon
c) Chlorine
d) Nitrogen
106. A
s mall
q uantity
o f
a
c hemical
w as
w armed
w ith
a
s mall
v olume
o f
c oncentrated
Sulphuric
a cid.
S ome
g as
w as
o bserved
t o
e manate
b ut
t he
s ample
d id
n ot
g et
blackened.
I t
c an
b e
a ssumed
t hat
t he
s ample
i s:
a) Sucrose
b) Formate
c) Starch
d) Resorcinol
107.
T he
e nergy
o f
a
p hoton
o f
w avelength
3 50
n m
i s
( given
v alues
h
=
6 .626
X
1 0
J s;
-‐34
c
=
2 .998
X
1 0
m
s
)
8
-‐1
a) 5.68
X
1 0
J
-‐19
b) 568
X
1 0
J
-‐19
c) 32.8
X
1 0
J
-‐19
d) 4.5
X
1 0
J
-‐19
108.
T he
n umber
o f
N
m olecules
p resent
i n
2 8
g m
o f
n itrogen
i s
a pproximately
2
a) 3x10
11
b) 6x10
23
c) 3x10
13
d) 6x10
3
109.
W hich
o f
t he
f ollowing
m ethods
c annot
b e
u sed
t o
d etermine
t he
M olecular
s ize
o f
a
p rotein
a) Mass
s pectrometry
b) Hydrodynamic
m ethods
c)
Static
l ight
s cattering
d) Circular
d ichroism
110.
W hich
o f
t he
f ollowing
i s
t he
w avelength
o f
a n
e lectron
( mass=
5 .31x10
K g)
6
traveling
a t
5 .31X10
m .s
is
6
-‐1
a) 1.37
A ngstrom
b) 137
A ngstrom
c) 0.243
A ngstrom
d) 2430
A ngstrom
111.
W hich
o ne
o f
t he
f ollowing
s tatements
i s
N OT
c orrect?
a) An
e lectrophile
a ccepts
a
p air
o f
e lectrons
b) A
n ucleophile
d onates
a
p air
o f
e lectrons
c) A
f ree
r adical
c ontains
a n
u npaired
e lectron
d) A
n ucleophile
a ttacks
t he
a tomic
n ucleus
17
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education