The Medical College - Page 44
133.
The possible number of values of
magnetic
quantum number, when
= 1, is:
A.
one.
C.
three
B.
two.
D.
four.
134.
The possible number of values of spin
quantum
number is:
A.
one.
C.
three
B.
two.
D.
four.
135.
In a particular atom, the number of electrons
that
possess all four quantum numbers identical
to
those of another electron is:
A.
zero.
C.
two.
B.
one.
D.
three.
Questions 136–142 are independent of any
pas-
sage and of each other.
136.
If one wished to remove substantially all of
the
chloride ions from an aqueous solution,
this
could be done by the addition of an
aqueous
solution of:
A.
KNO3.
C.
AgNO3.
B.
Na2SO4.
D.
starch.
137.
If it is known that H2S is a weak acid that
ion-
izes to form 2H
+ and
S2–, lowering
the pH of a
solution of H2S by adding HCl
should:
A.
raise the S
2– concentration.
B.
lower the S
2– concentration.
C.
have no effect on S
2– concentration.
D.
not be possible.
138.
Which of the following aqueous solutions
will
have the lowest freezing point?
A.
1 M NaCl.
C.
1.5 M glucose.
B.
0.3 M Na2SO4.
D.
H2O.
139.
Consider this reaction: Fe
2+
Fe
3+ +
e–.
Which
of the following is correct?
A.
The reaction toward the right is an
oxida-
tion.
B.
The reaction toward the right is a
reduction.
C.
The reaction toward the left is a
reduction.
D.
A and C are correct.
140.
The hydronium ion is:
A.
a protonated water molecule.
B.
formed by removal of H
– from a
water
molecule.
C.
an ion with the formula of H2O
+.
D.
an uranium byproduct.
141.
How many milliliters of 0.5N NaOH
are
required to neutralize 50 ml of 0.25N
HCl?
A.
25
C.
0.25
B.
50
D.
2.5
142.
A zwitterion is a molecule
containing:
A.
both cationic and anionic
functional
groups.
B.
more than one cationic or anionic
func-
tional groups.
C.
polar and nonpolar groups.
D.
a Z
+ charge.
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