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Title: Chemistry General & Board Exam Reviewer
Description: This reviewer contains sample questions in the five fields of chemistry - organic, analytical, inorganic, physical, and biochemistry. The questions are multiple-choice type of questions with answer key.
Description: This reviewer contains sample questions in the five fields of chemistry - organic, analytical, inorganic, physical, and biochemistry. The questions are multiple-choice type of questions with answer key.
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
1
...
a
...
6 electrons, 6 protons, 14 neutrons
c
...
8 electrons, 6 protons, 6 neutrons
2
...
P is a cation
...
P is an anion X
c
...
P is a neutral atom
...
Uranium-235 and uranium-238 are best described as ____________
...
allotropes
b
...
isotopes X
d
...
Which of the following is attributed to Rutherford’s Gold Foil experiment?
a
...
Evidence that atoms are mostly empty space X
c
...
The Quantum Mechanical Model of the Atom
5
...
a
...
Alkaline earth metals X
c
...
Transition elements
6
...
a
...
Ultraviolet
c
...
X-rays
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
7
...
[Ar] 3s2 3p2
b
...
[Ne] 3s2 3p6 3d2
d
...
The number of unpaired electrons in a tellurium atom is _____
...
1
b
...
3
d
...
Which electron transition in a hydrogen atom is with the smallest emission of energy?
a
...
n = 2 to n = 1
c
...
n = 3 to n = 2 X
10
...
Number (No
...
of electrons
II
...
electrons = No
...
of neutrons
III
...
of neutrons = No
...
of electrons
a
...
I and III
c
...
None of the above X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
11
...
with one or more unpaired electrons
II
...
no unpaired electrons
IV
...
permanent magnet
a
...
b
...
III and IV
d
...
X + Y → XY (ΔH = -13 kJ/mol) is a ______________
...
endothermic decomposition
b
...
exothermic decomposition
d
...
Which reaction is likely to be accompanied by an increase in entropy?
a
...
2Na₍ ₎ + Cl₂₍𝓰₎ → 2NaCl₍ ₎ at 26 °C
c
...
H₂O₍𝓰₎ → H₂O₍ ₎ at 99 °C
14
...
endothermic and endothermic X
b
...
exothermic and exothermic
d
...
...
For which of these processes is the value of ΔS expected to be positive?
I
...
II
...
III
...
a
...
II only
c
...
I and III
X
16
...
a
...
X
b
...
c
...
d
...
Which of the following affects the vapor pressure of a liquid?
a
...
temperature X
c
...
surface area of the liquid
18
...
at critical temperature
II
...
below the critical temperature
IV
...
above the normal boiling point
a
...
I and III
X
c
...
I, II, III, IV and V
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
19
...
a
...
hypotonic
c
...
osmotic lysis
20
...
4
b
...
8 X
d
...
The limiting reagent in a reaction is the reagent that
a
...
b
...
c
...
d
...
X
22
...
limited yield
b
...
product yield
d
...
...
A symmetry element or operation that causes no change in the molecule
...
C
b
...
i
d
...
In the computation of bond order, which of the following will you consider?
I
...
of electrons in antibonding orbitals
II
...
of electrons in bonding orbitals
III
...
of electrons in nonbonding orbitals
a
...
I and II X
c
...
II and III
25
...
pOH = 12
...
[OH⁻] = 8
...
[H₃O⁺] = 1
...
I only
X
b
...
II and III
d
...
Considering the nomenclature of monodentate ligands, which of the following are
incorrect?
I
...
H⁻ : hydroxo
III
...
O²⁻ : oxido
V
...
I and IV
b
...
II, III and V
d
...
...
[Ag(NH₃)₂]Br is _______
...
diamminesilver(I) bromide X
b
...
silver(I) bromodiammine
d
...
Consider the nomenclature of K₃[Fe(CN)₆], which will be written first in its inner
coordination sphere?
a
...
the iron ion
c
...
None of the above
29
...
strong ligand field : high spin
II
...
strong ligand field : large crystal field splitting
a
...
I and III
c
...
I, II and III
30
...
F⁻ > Cl⁻ > Br⁻ > I⁻
b
...
F⁻ = Cl⁻ = Br⁻ = I⁻
d
...
Considering ligand field strengths, which of the following is correct?
a
...
CO > phen > en > H₂O > F⁻ X
c
...
CO > F⁻ > en > phen > H₂O
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
32
...
I
...
symmetry
III
...
space-time
a
...
II only
c
...
II and III
33
...
green
b
...
violet X
d
...
Which of the following is a dimensionless quantity?
a
...
molar absorptivity
c
...
frequency
35
...
a
...
products
c
...
transition state
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
36
...
closed
II
...
open
a
...
I and III
c
...
I, II, and III
37
...
a
...
anomers
c
...
polymers
38
...
Temperature
II
...
Pressure
IV
...
Mole fraction
a
...
II and IV
c
...
II, III, IV and V
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
39
...
adiabatic : constant temperature
II
...
isochoric : constant volume
a
...
I and II X
c
...
None of the above
40
...
pressure
II
...
temperature
IV
...
I and II
b
...
I, II, and III
d
...
A closed system performed work of 500 J, with 2000 J of energy in the form of heat
supplied to it
...
0
...
1
...
2
...
2
...
...
To compute for Helmholtz free energy (F), which of the following will you need?
I
...
entropy
III
...
internal energy
a
...
I, II, and III
c
...
I, II, III and IV
X
43
...
I
...
fructose
III
...
I, I
b
...
I an II
d
...
Which of the following is found in milk?
a
...
glucose
c
...
lactose
X
45
...
mg/L
II
...
μg/mL
IV
...
I and III
b
...
I and IV
d
...
...
What is the pNa for a solution of 2
...
0
...
2
...
6
...
8
...
You need to measure 50mL of an unknown liquid
...
beaker
II
...
Erlenmeyer flask
IV
...
I and II
b
...
I, and III
d
...
Your next experiment is titration of vinegar
...
burette X
b
...
pipet
d
...
The compound synthesized by your group is hygroscopic
...
Place it inside the oven
...
Place it inside the fume hood
...
Place it inside the dessicator
...
Place it inside the centrifuge
...
...
This is the smallest amount of analyte that can be determined with confidence
...
detection limit
b
...
selectivity
d
...
This is the process of establishing the relationship between the amount of analyte
and a method’s signal
...
calibration
b
...
sampling
d
...
Consider the following reaction
2A + B ⇄ C + 3D
What is the equilibrium constant for this reaction given the following information
Reaction 1:
Reaction 2:
Reaction 3:
Reaction 4:
a
...
0
b
...
2
c
...
0
d
...
0
A+B
A+E
C+E
F+C
⇄
⇄
⇄
⇄
D
C+D+F
B
D+B
X
53
...
00 M LiCl?
a
...
50 M
b
...
00 M
c
...
00 M
d
...
00 M
X
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K₁ = 2
...
0
K₃ = 3
...
0
PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
54
...
precipitation
II
...
electrodeposition
IV
...
volatilization
a
...
II and IV
c
...
I, II, III and V
X
55
...
a
...
digestion
c
...
occlusion
X
56
...
a
...
Cu
c
...
Zn
X
57
...
a
...
resolution X
c
...
effective bandwidth
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
58
...
a
...
chronosphere
c
...
ionophore
X
59
...
a
...
attenuance
c
...
transmittance
X
60
...
a
...
counter electrode
c
...
working electrode
X
61
...
anode : oxidation
II
...
oxidation : gain of electrons
IV
...
I and II
b
...
I and III
d
...
...
It is a chemical species whose interior is hydrophilic and whose exterior is
hydrophobic
...
active site
b
...
chromophore
d
...
The chemical reaction for the complete combustion of methane is
CH₄ + O₂ → CO₂ + H₂O
What is the sum of the coefficients when this reaction is balanced?
a
...
6
c
...
10
X
64
...
a
...
gravimetry
c
...
voltammetry X
65
...
00 minutes and a baseline width of 0
...
How many theoretical plates
are involved in this separation?
N = 16 (tᵣ / w)²
a
...
3200 plates
c
...
14500 plates
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
66
...
00 minutes and a baseline width of 0
...
If the column used for this
analysis is 3
...
0
...
0
...
0
...
9
...
Which of the following do not have a carbonyl group?
I
...
alcohol
III
...
ether
V
...
I and V
b
...
I, II and IV
d
...
What is the conjugate acid of CH₃NH₂?
a
...
CH₃NH₃⁺
c
...
CH₃NH⁻
X
69
...
a
...
2
c
...
4
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
70
...
a
...
C + H₂
c
...
C + H
X
71
...
2-methyl-2-pentene
b
...
3-methyl-1-pentene
d
...
What is the major product for the reaction
2-bromo-2-methylpentane (KOH, alcohol)→ minor product?
a
...
2-methyl-3-pentene
c
...
2-methyl-1-pentene
X
73
...
1-bromopropane
b
...
2,2-dibromopropane
d
...
...
What is the product for the reaction
1-pentene (HBr)→ ?
a
...
2-bromopentane
c
...
1-pentanol
X
75
...
2-bromopropane
b
...
1,2-dibromopropane
d
...
What is the product for the reaction
2-bromopropane (⁻SH, CH₃OH)→ ?
a
...
butane-2-thiol X
c
...
2-propanol
77
...
a
...
sp²
c
...
sp³d
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
78
...
cyclohexene
b
...
benzaldehyde
d
...
What is the product for the reaction
methylbenzene (KMnO₄)→ ?
a
...
benzenol
c
...
No reaction
X
80
...
ultraviolet region
II
...
infrared region
a
...
II only
c
...
I and II
X
81
...
pH
b
...
biological oxygen demand
d
...
...
Which of the following will result in a positive Tollens’ test?
a
...
alcohol
c
...
ketone
X
83
...
Benedict’s test
b
...
Tollens’ test
d
...
113°F is equal to __°C
a
...
45
c
...
273
X
85
...
bronze
b
...
iron
d
...
This argentometric method used chromate ions
...
Mohr
X
b
...
Fajans
d
...
...
This argentometric method used ferric ions
...
Mohr
b
...
Fajans
d
...
This argentometric method used fluorescein and its derivatives
...
Mohr
b
...
Fajans X
d
...
Which of the following is the test for the presence of reducing sugars in a sample?
a
...
Flame test
c
...
Sakaguchi test
X
90
...
water
X
b
...
carbon
d
...
In the laboratory, carbon dioxide is mostly prepared by _______
...
reacting an acid with a base
b
...
reacting a base with a carbonate
d
...
...
Which of the following is incorrect?
I
...
Lyman series : infrared
III
...
I only
b
...
I and II
d
...
Which of the following is an allowed value for the principal quantum number, n?
a
...
0
c
...
-1
X
94
...
-1
b
...
½
d
...
Which of the following is a non-aliphatic compound?
a
...
nonane
c
...
methane
X
96
...
thorium
b
...
uranium
d
...
...
Which of the following is the most electronegative element?
a
...
titanium
c
...
iron
X
98
...
carbon dioxide
b
...
carbon monoxide
d
...
Which of the following is a product of the complete combustion of a hydrocarbon?
a
...
hydrogen
c
...
carbon
X
100
...
neutralization
b
...
hydrolysis
d
...
This reaction will produce salt and water
...
neutralization
b
...
hydrolysis
d
...
...
Oxygen and ozone can be described as ___________
...
allotropes
b
...
isotopes
d
...
Ethyl methyl ether and propan-1-ol are _______
...
allotropes
b
...
isotopes
d
...
Which of the following is incorrect?
I
...
same number of neutrons : isotones
III
...
I only
X
b
...
I and II
d
...
Consider
2A₍𝓰₎ + X₍𝓰₎ ⇄ J₍𝓰₎ + D₍𝓰₎ (exothermic)
Which of the following favors the production of more reactants?
a
...
decreasing the pressure of the system
c
...
increasing the temperature
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X
PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
106
...
a
...
boron
X
c
...
silicon
107
...
a
...
Marsh test
c
...
Benedict's Test
X
108
...
a
...
Marsh test
c
...
Benedict’s Test
X
109
...
a
...
peptization
c
...
nucleation
X
110
...
a
...
mixed crystal formation
c
...
nucleation
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
111
...
a
...
mechanical entrapment
c
...
nucleation
X
112
...
a
...
occlusion
c
...
nucleation
X
113
...
a
...
electromagnetism
c
...
diamagnetism
X
114
...
a
...
diamagnetic
c
...
magnetic
X
115
...
sodium bicarbonate
b
...
ethanol
d
...
...
How many valence electrons does nitrogen have?
a
...
4
c
...
6
X
117
...
equatorial, equatorial
b
...
axial, equatorial
d
...
Which positions must the bromo groups of trans-1,4-dibromocyclohexane occupy
to achieve the least stability?
a
...
axial, axial
c
...
equatorial, axial
X
119
...
carbocations
b
...
carbenes
d
...
Which of the following is not a stereoselective reagent
a
...
osmium tetroxide
c
...
hydrochloric acid
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
121
...
DMSO
b
...
formic acid
d
...
Which of the following is a polar protic solvent?
a
...
ethanol
c
...
THF
X
123
...
a
...
epinephrine
c
...
cortisol
X
124
...
a
...
epinephrine
c
...
cortisol
X
125
...
a
...
decreased insulin levels in the blood
c
...
decreased cortisol levels in the blood
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X
PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
126
...
a
...
liver tissues
c
...
blood
X
127
...
a
...
acetyl-CoA
c
...
insulin
X
128
...
a
...
liver
c
...
pancreas
X
129
...
hexane
b
...
octene
d
...
Which of the following is a saturated compound?
a
...
2-bromooctane
c
...
1-pentyne
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
131
...
methanoic acid and butanoic acid
b
...
propane and octane
d
...
A triple bond consists of _______
...
3 sigma bonds
B
...
1 sigma and 2 pi bonds
D
...
Which of the following is not true about nucleophiles?
I
...
unshared pair of electrons
III
...
I only
b
...
I and II
D
...
Which of the following is true about electrophiles?
I
...
electron donors
III
...
I only
b
...
I and II
d
...
...
Which of the following is not true if the bonds in the products are stronger than the
bonds in the reactants of a chemical reaction?
a
...
ΔH is negative
c
...
the reaction is endothermic
X
136
...
the strongest acids have the weakest conjugate bases
b
...
the stronger an acid, the larger its pKa value
d
...
The separation of a racemic mixture into its individual enantiomers
a
...
resolution
c
...
specific rotation
X
138
...
a
...
amine
c
...
sulfur
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
139
...
the difference between the end point and the equivalence point
II
...
the difference between the amount of titrant consumed and the volume of indicator
used during the titration
a
...
II only
c
...
II and III
X
140
...
a
...
mercury
c
...
sulfur
X
141
...
-2
b
...
0
d
...
Which of the following are the components of the sample being determined by an
analytical chemist?
a
...
analyte
X
c
...
interferent
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
143
...
I
...
analyte
III
...
I only
X
b
...
I and III
d
...
Semimicro analysis is performed on samples with masses ranging ______
...
>0
...
0
...
01 g
c
...
0001 to 0
...
<10⁻⁴ g
X
145
...
51% of the
ore that he is analyzing
...
a
...
minor constituent
c
...
ultratrace constituent
X
146
...
At the most, a ________ analysis can
be performed
...
macro
b
...
micro
d
...
...
Amphiprotic species
I
...
has both a positive and negative charge
III
...
I only
X
b
...
III only
d
...
All of the following are characteristics of an ideal precipitating reagent EXCEPT
________
...
easily filtered and washed free of contaminants
II
...
reactive with constituents of the atmosphere
IV
...
II only
b
...
I, II and III
d
...
In a galvanic cell, oxidation occurs at the _______
...
cathode
II
...
salt bridge
a
...
II only
X
c
...
I, II and III
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
150
...
I
...
anode
III
...
I only
b
...
I and II
d
...
A car battery is an example of all of the following EXCEPT for _______
...
galvanic cell
II
...
electrochemical cell
IV
...
I only
b
...
I, II and III
d
...
A reference electrode in potentiometry has _______
...
known and constant electrode potential
II
...
varying electrode potential depending on the analyte
a
...
III only
c
...
I, II, and III
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
153
...
a
...
platinum metal
c
...
mercury in contact with a solution that is saturated with mercury(I) chloride
X
154
...
an indicator metal electrode that responds to both its own cations and anions
II
...
an inert metal electrode such as platinum, gold, and carbon used to monitor redox
reactions
a
...
II only
c
...
I, II and III
X
155
...
a
...
limiting current
c
...
differential pulse
X
156
...
I
...
sparging
III
...
I only
b
...
I and II
d
...
...
In polarography, this is the small current observed in the absence of an
electroactive species
...
limiting current
b
...
residual current
d
...
In polarography, this is the limiting current observed in polarography when the
current is limited only by the rate of diffusion to the dropping mercury electrode surface
...
faradaic current
b
...
residual current
d
...
In an electrochemical cell, this is the current that results from an
oxidation/reduction process
...
nonfaradaic current
b
...
residual current
d
...
In an electromagnetic wave, this is the number of oscillations that occur in one
second
...
period
b
...
frequency
d
...
...
Which of the following is/are the chemical systems that exchange energy but not
matter?
I
...
closed system
III
...
I only
b
...
I and III
d
...
This states that molar volumes of different gases at the same temperature and
pressure have the same values
...
Boyle’s Law
b
...
Gay Lussac’s Law
d
...
This states that at constant pressure and constant amount of substance, the
volume
of a system is proportional to its absolute temperature
...
Boyle’s Law
b
...
Gay Lussac’s Law
d
...
When two systems are in thermal equilibrium, no heat flows from one system to
the other
during their thermal contact, then both systems have the same temperature
...
Zeroth Law of Thermodynamics X
b
...
Second Law of Thermodynamics
d
...
...
A closed chemical system was supplied with 2000 J of heat while performing 800 J
of work
...
-1
...
+1
...
+2
...
-2
...
A closed chemical system released 1 kJ of heat while 0
...
Which of the following is the total change in internal energy of the
system (ΔU)?
ΔU = q + w
a
...
5 kJ X
b
...
5 kJ
c
...
5 kJ
d
...
5 kJ
167
...
0 °C
b
...
+273
...
-459
...
A system containing 10 moles of an ideal gas was heated from temperature T1 =
150 K to temperature T2 = 200 K
...
Which of the following is the change in enthalpy (ΔH) of the system?
ΔH = ΔU + Δ(pV)
a
...
557 kJ
b
...
-441 J
d
...
...
This is the temperature at which a liquid of a given composition is in phase
equilibrium with its solid phase at a chosen pressure
...
boiling temperature
b
...
freezing temperature
d
...
This is the temperature at which a liquid of a given composition is in phase
equilibrium with its vapour at a chosen pressure
...
boiling temperature
b
...
freezing temperature
d
...
The molecularity of a reaction occuring due to the decomposition of a molecule
...
unimolecular
II
...
trimolecular
a
...
II only
c
...
II and III
172
...
I
...
Initiation
III
...
I only
b
...
I and II
d
...
...
This is a type of heat transfer that involves no transfer of mass
...
conduction
II
...
diffusion
a
...
II only
c
...
II and III
X
174
...
I
...
viscosity
III
...
I only
b
...
I and II
d
...
In kinetic theory, this is the average distance a molecule travels between two
collisions
...
collision frequency
b
...
collision diameter
d
...
Which of the following is the energy of one photon of red light of the wavelength
699 nm?
E = hv, c = vλ
a
...
84 x 10⁻¹⁹ J
b
...
68 x 10⁻¹⁹ J
c
...
42 x 10⁻¹⁹ J
d
...
84 x10⁻¹⁹ J
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
177
...
gamma radiation
b
...
infrared radiation
d
...
Which of the following has the highest frequency?
A
...
radio waves
C
...
ultraviolet radiation
X
179
...
I
...
anti-Stokes radiation
III
...
I only
b
...
I and III
d
...
This expresses the dependence of the adsorbed amount of the gas component on
its partial pressure at constant temperature
...
adsorption isotherm
II
...
adsorption isostere
a
...
II only
c
...
II and III
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
181
...
I
...
chemisorption
III
...
I only
b
...
I and II
c
...
Adsorption of gases which are under critical temperature and which wet the
adsorbent surface may occur in narrow pores of the adsorbent
...
physical adsorption
II
...
capillary condensation
a
...
III only
c
...
II and III
X
183
...
a
...
secondary
c
...
quaternary
X
184
...
a
...
secondary
c
...
quaternary
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
185
...
a
...
secondary structure of a protein
c
...
quaternary structure of a protein
186
...
a
...
secondary
c
...
quaternary
X
187
...
I
...
diastereomers
III
...
I only
b
...
I and II
d
...
Hemiacetals are formed when
I
...
alcohols react with aldehydes
III
...
II only
b
...
I and II
d
...
...
Hemiketals are formed when
I
...
aldehydes react with alcohols
III
...
I only
b
...
I and II
d
...
An _______ molecule has both hydrophobic and hydrophilic parts
...
amphiprotic
II
...
amphoteric
a
...
II only
c
...
II and III
X
190
...
I
...
anomeric
III
...
I only
b
...
I and III
d
...
...
Terpenes are made up of _______ molecules
...
neoprene
II
...
isopentane
a
...
II only
c
...
I and III
X
192
...
a
...
three
c
...
five
X
193
...
a
...
Transcription
c
...
Recording
X
194
...
I
...
nucleotides
III
...
I only
b
...
I and III
d
...
...
Nucleic acids are composed of linear polymers of nucleotides linked by
_________
...
amide bonds
b
...
3’ to 5’ phosphodiester bridges
d
...
Which of the following is the enzyme that hydrolyzes nucleic acids?
a
...
nucleases
c
...
Proteases
X
197
...
a
...
coenzyme
c
...
yoloenzyme
X
198
...
a
...
coenzyme
c
...
yoloenzyme
X
199
...
glucose
b
...
pyruvate
X
d
...
...
The metabolic pathway that converts glucose into pyruvate
...
glycolysis
X
b
...
ggycogenolysis
d
...
During glycolysis, one molecule of glucose produces ______ molecule/s of
pyruvate
...
one
b
...
three
d
...
During the first phase of glycolysis, glucose is converted into ________
...
glucose
b
...
3-phosphoglycerate
d
...
The net ATP produced in glycolysis for every molecule of glucose
...
1 molecule
b
...
3 molecules
d
...
The citric acid cycle produces ____ molecule/s of ATP for every molecule of acetyl
CoA
...
one
b
...
three
d
...
...
The Krebs cycle produces ____ molecule/s of FADH₂ for every molecule of
glucose
...
one
b
...
three
d
...
The tricarboxylic acid cycle produces ___ molecule/s of NADH for every molecule
of acetyl CoA
...
one
b
...
three
d
...
The Krebs cycle produces ____ molecules of NADH for every molecule of glucose
...
one
b
...
six
d
...
Which of the following metabolic pathways produces the most ATP?
a
...
Krebs cycle
c
...
electron transport chain
X
209
...
a
...
kidney
c
...
Heart
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
210
...
two
b
...
four
d
...
Which of the following is the percentage by mass of carbon in sucrose
(C₁₂H₂₂O₁₁)?
a
...
4%
b
...
1%
c
...
5%
d
...
7%
X
212
...
350 mol of glucose
(C₆H₁₂O₆)?
a
...
53 x 10²⁴
b
...
06 x 10²⁴
c
...
27 x 10¹²
d
...
5 x 10¹²
X
213
...
92% C, 4
...
50% O by mass
...
C₃H₄O₃
B
...
C₂H₃O₂
d
...
...
How many moles of ammonia is produced from 3
...
0
moles of hydrogen gas?
N₂₍𝓰₎ + H₂₍𝓰₎⇄ NH₃₍𝓰₎
a
...
0
b
...
0
c
...
0
d
...
0
X
215
...
sodium carbonate
b
...
barium nitrate
d
...
Which of the following compounds is soluble in water?
a
...
lead(II) sulfate
c
...
silver iodide
217
...
0
b
...
+2
d
...
...
Carbon's allotrope graphite has an enthalpy of combustion of -393
...
C⁽ᵍʳᵃᵖʰ ᵗᵉ⁾ + O₂₍𝓰₎ → CO₂₍𝓰₎ ΔH = -393
...
4 kJ
Which of the following is the ΔH for the conversion of graphite to diamond?
C⁽ᵍʳᵃᵖʰ ᵗᵉ⁾ → C⁽ᵈ ᵃᵐᵒⁿᵈ⁾
a
...
9 kJ
b
...
9 kJ
c
...
5 kJ
d
...
4 kJ
ΔH = ?
X
219
...
706 g/L
measured at 759
...
46
...
65
...
93
...
0
...
Which of the following is the density of a gas at 25 °C, 755 mmHg and with molar
mass of 43
...
1
...
2
...
3
...
15,832
...
...
For an electron with principal quantum number of 3, which of the following is not an
allowed value for its magnetic quantum number?
a
...
1
c
...
3
X
222
...
Mg²⁺
X
b
...
Ca
d
...
223
...
S²⁻
X
B
...
O²⁻
D
...
224
...
K⁺
B
...
Ca²⁺
D
...
Which of the following molecules does not possess a trigonal planar molecular
geometry?
a
...
formaldehyde
c
...
carbonate ion
X
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PHILIPPINE CHEMISTRY PROFESSIONALS BOARD EXAM REVIEWER
226
...
0
...
1
C
...
0
X
227
...
0 g of KCl in 100
...
2
...
0
...
3
...
7
...
Which of the following is the [H⁺] of an okra juice with pOH of 9
...
1
...
2
...
4
...
5
...
A 0
...
36
...
5
...
10
...
12
...
15
...
Title: Chemistry General & Board Exam Reviewer
Description: This reviewer contains sample questions in the five fields of chemistry - organic, analytical, inorganic, physical, and biochemistry. The questions are multiple-choice type of questions with answer key.
Description: This reviewer contains sample questions in the five fields of chemistry - organic, analytical, inorganic, physical, and biochemistry. The questions are multiple-choice type of questions with answer key.