Entrance Test For Biotechnology Page 19
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23119.
A
r eaction
h as
a
r ate
l aw
o f
t he
f orm
k [A]
[B]
a nd
t he
r eaction
r ate
i s
m easured
i n
2
m ol.dm
.s
.
T he
u nit
o f
t he
r ate
c onstant
k
i s
-‐3
-‐1
a) dm
.mol
.s
6
-‐2
-‐1
b) mol.dm
.s
-‐3
-‐1
c) dm
.mol
.s
3
-‐2
-‐1
d) s
-‐1
120.
I n
w hich
o f
t hese
p rocess
p latinum
i s
u sed
a s
a
c atalyst?
a) Oxidation
o f
a mmonia
t o
f orm
H NO
3
b) Hardening
o f
o ils
c) Production
o f
s ynthetic
r ubber
d) Synthesis
o f
m ethanol
121.
D uring
a
n eutron
s cattering
e xperiment,
t he
n eutron
b eam
i nteracts
w ith
t he
a) nuclei
b) outer
s hell
e lectrons
c) electrons
i n
a n
i onized
a tom
d) electrons
i n
i nner
s hell
122.
T he
f ollowing
n uclear
r eaction,
Ag
-‐ >
CD
,
w ill
e mit
110
110
4 7
4 8
a) a
p ositron
b) an
a lpha
p article
c) an
e lectron
d) gamma
r ays
123.
T he
b ond
a ngle
X -‐C-‐Y
c entered
a t
a n
S P
h ybridized
c arbon
a tom
i s
2
a) 109
d egree
b) 120
d egree
c) 180
d egree
d) 45
d egree
124.
T he
o xygen
a tom
i n
a
w ater
m olecule
c ontains
a) one
l one
p air
o f
e lectrons
b) two
l one
p airs
o f
e lectrons
c) no
l one
p air
o f
e lectrons
d) four
l one
p airs
o f
e lectrons
125.
I f
w e
w ish
t o
l ocate
a n
e lectron
w ithin
a n
a tom
s o
t hat
u ncertainty
i n
p osition
( Dx)
i s
~ 50
p m,
t he
u ncertainty
i n
m omentum
( Dp)
i s
a) 1.3X
1 0
k g.m.s
-‐23
-‐1
b) 3.2X
1 0
k g.m.s
-‐23
-‐1
c) 13X
1 0
k g.m.s
-‐23
-‐1
d) 2.4X
1 0
k g.m.s
-‐23
-‐1
126.
L ead
t etraethyl
i s
u sed
a s
a) Fire
e xtinguisher
b) Pain
k iller
c) Petroleum
a dditive
d) Mosquito
r epellent
19
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