PCP I Flashcards
1
Q
A substance that can accept a proton
A
Bronsted base
2
Q
The molecu methane, is often represented by the ff structural formula:
C
|
C-H-C
|
C
What is the actual geometric shape?
A
Tetrahedral
3
Q
The number of electrons in an atom of an element is equal to
A
Atomic number
4
Q
A solution used principally to control pH value of a solution to a point where selective precipitation can be made
A
Buffer solution
5
Q
Hydrogen is common to all
A. Acids
B. Salts
C. Oxides
D. Metals
A
Acids
6
Q
Defines an acid as a compound that dissolves in water to produce hydronium ions
A
Arrhenius
7
Q
One gram mole of a specie is that weight of the specie equivalent to its
A. Molecular weight
B. Atomic number
C. Atomic mass
D. Number of nuetrons
A
Molecular weight
8
Q
The mass contribution of an electron in an atom is
A
1/1837 that of a proton
9
Q
Along a row in the periodic table elements have the same _____
A
Energy level
10
Q
The electrons of merals are free to move in a solid. This explains why
A. Metals are unstable
B. Metals have high reflectivity
C. Metals can be easily molded
D. Metals have high conductivity
A
Metals have high conductivity
11
Q
How many pi bonds are there in a double bond?
A
1
12
Q
All isotopes of a given elements have the same number of
A
Protons
13
Q
Used to express the ethanol concentration in beverages
A
Proof
14
Q
The universal blood type donor is
A
Type O
15
Q
Which will dissolve fastest in coffee?
A. Lump sugar in hot coffee
B. Granular sugar in a hot coffee
C. Granular sugar in cold coffee
D. Lump sugar in cold coffee
A
Granular sugar in hot coffee
16
Q
As waterr boils at 1 atm, the temperature
A
Remains 100 degree celsius unti all is changed to vapor
17
Q
Saltwater at 1 atm bouls at
A. Slightly higher than 100C
B. 100C
C. Less than 100C
D. 98C
A
A
18
Q
The method of measuring the specific heat of liquids
A
Calorimetry
19
Q
Which has the greatest rest mass?
A. Alpha particle
B. Proton
C. Neutron
D. Electron
A
Aplha particle
20
Q
Which noble gas is 1% by volume in air?
A
Argon
21
Q
What is the mass of an electron?
A
9.11 x 10-31
22
Q
Also known as soda lye or caustic soda which is used in manufacture is soap?
A
Sodium hydroxide
23
Q
Prussic acid has a formula of
A
HCN
24
Q
An azeotropic mixture is a
A
Liquid mixture of two or more substances in which the vapor has the same composition as the liquid
25
Which of the ff compound has the highest purity?
A. Technical grade
B. USP grade
C. Reagent grade
D. Primary standard
Primary standard
26
What is the order of nuclear decay reactions?
First
27
The temperature at which a polymer changes from hard and brittle to rubbery and tough is called
Glass transition temperature
28
In (HAsO3)2-, what is the oxidation state of As?
+3
29
Which of the ff is covalently bonded?
A. MgO
B. KCl
C. NaCl
D. CaCl2
MgO
30
Discovered water by exploding hydrogen and oxygen
Cavendish
31
Buffer solution resists changes in acidity. If an acid is added to a buffer solution, the ______ remains the same.
A. pH
B. Concentration
C. Molality
D. Mole fraction
pH
32
Which of the ff is a heavy ductile metal?
A. Mn
B. Mg
C. Ni
D. Al
Ni
33
Optical pyrometer is used to
measure temperatures of solid objects at temperature above 700 degree celsius
34
An acid found in fruits
A. Acetic acid
B. Citric acid
C. Formic acid
D. Ascorbic acid
Citric acid
35
Commercially important ore of lead is
Galena
36
Brimstone is
A. Charcoal
B. Sulfur dioxide
C. Sulfur
D. Form of diamond
Sulfur
37
Teratogens can cause
Child birth defects
38
Which of the ff has the least polar bonding?
A. Carbon dioxide
B. Nitrogen dioxide
C. Oxygen
D. Sulfur dioxide
Oxygen
39
The type of intermolecular bond present in water is
Hydrogen bond
40
Brass in an alloy of
Cu and Zn
41
Which of the ff is another allotropic form of graphite?
A. Gold
B. Diamond
C. Silver
D. Bronze
Diamond
42
All are isoelectronic, except
A. Mg2+
B. F
C. Na+
D. Ne
F
43
The poorest source of hydrogen is
A. Protein, fat and carbohydrate
B. Atmosphere
C. Fossil fuel
D. Water
Atmosphere
44
When atoms collide, they do not lose energy. This is because
collision is elastic
45
From what mineral is radium obtained?
Pitchblende
46
A catalyst
Decrease the energy of activation
47
Which of the ff dies not depend on the electronic configuration?
A. Physical properties
B. Chemical properties
C. Nuclear properties
D. None of the above
C
48
Which of the ff is not a non-cyclic hydrocarbon?
A. Methane
B. Phenol
C. Ethyne
D. Ethene
Phenol
49
What is the color of commercially available nickel chloride?
Green
50
Arrange Ca, Be, and Mg according to increasing atomic size
Be
51
Cr(NH3)5SO4Cl represent _____ atoms
27
52
Which of the ff is extrapolated from Charles law?
A. Gay Lussac's Law
B. Dalton's law
C. Absolute temperature scale
D. Amagat's law
C
53
Which of the ff exhibits a hydrogen bond?
A. Fluoromethane
B. Ethane
C. Methanol
D. Hydrogen sulfude
Methanol
54
```
Alka-seltzer is an example of
A. Antacid
B. Depressant
C. Neutralizer
D. Coolants
```
Antacid
55
It is formed when CO reacts with the hemoglobin in blood
Carboxyhemoglobin
56
The presence of which of the ff cations in solutions can not be confirmed by conducting flame test
A. Ba2+
B. Na+
C. Ca2+
D. Ni2+
Ni2+
57
Also known as the "Toxic and Hazardous Waste Managment Act of 1990"
RA6969
58
Tetraethyl lead is added to petrol to
Increase anti-knocking rate
59
Deuterium is an isotope officially
Hydrogen
60
Needed to make a silicone rubber
Trihydroxymeth silane
61
Most of the bacteria in sewage are
Saphrophytic
62
Which of the ff is not an amino acid?
A. Glutamic acid
B. Glutamine
C. Aspartic acid
D. Palmitic acid
Palmitic acid
63
The compressibility factor for evey gas as its pressure approaches zero is
1
64
The migration of colloidal particles under the influence of electric field isn't
Electrophoresis
65
Oil, water, and _____ will form a stable emulsion.
A. Butter
B. Starch
C. Soap
D. Marganne
Starch
66
Which are unsaturated?
A. Alkenes and alkynes
B. Alkanes, alkenes, and alkynes
C. Alkanes and alkenes
D. Alkanes and alkyne
Alkenes and alkyne
67
The process to transform long chain hydrocarbon into small chains
Cracking
68
A leak from a faucet comes out in separate drops. Which of the ff is the main cause of this phenomena?
A. Gravity
B. Air resistance
C. Viscosity
D. Surface tension
Surface tension
69
Property of a fluid to form droplets and assume the shape of a sphere and rise in a capillary tube
Surface tension
70
Unlike other pollutants, the photochemical oxidants result entirely from atmospheric reactions and are not direct emissions from either people or nature; thus they are called
Secondary pollutant
71
When a real gases approaches an ideal gas, compressibility facotr approaches
1
72
The source that gives the highest %CO and NOx emission to the atmosphere
Transportation facilities
73
Intermittent sand filters are primarily used to
A. Remove offensive odor
B. Supply fertilizers to farm
C. Oxidize putrescible matter
D. Nuetralize sludge
C
74
The capacity of a body of water to receive, dilute and carry away waste without harming water quality
Assimilative capacity
75
A criteria pollutant responsible for the reddish brown color of smog
NO2
76
A waste treatment process by which biologically active growths are continuously circulated with incoming biodegrable waste in the presence of oxygen
Activated sludge process
77
Oxygen gas is prepared in the laboratory by heating ______
Potassium chlorate
78
Most important component of pitchblende
Uranium
79
Two solid objects cause the height of the liquid in a graduated cylinder to rise to the same level when these are immersed in the cylinder separately. The object must have the same
A. Volume
B. Density
C. SG
D. Weight
Volume
80
Metal oxide combines with water will produce?
A. Acids
B. Neutral salt
C. Metal hydroxide
D. Hydrogen
Metal hydroxide
81
Which is the most common merhod of quantitative analysis?
A. Gravimetric
B. Precipitemetry
C. Volumetric
D. Gas chromatography
Volumetric
82
Aluminum chloride is found to exist as a
A. Monomer
B. Dimer
C. Trimer
D. Tetramer
Dimer
83
Metal oxides combines with water will produce
A. Acids
B. Base
C. Hydrates
D. Oxyacids
Base
84
Nonmetal oxide combines with water will produce
Acids
85
What reacts with AgNO3 to form a silver mirror?
Aldehydes
86
What is a green vitriol?
Ferrous sulfate
87
Which of the ff uses copper as the reagent?
A. Clemenson reduction
B. Wolf Kishner reaction
C. Coupling reaction
D. Lindlar's catalyst
Clemenson reduction
88
It is red in acid and yellow in alkaline
Methyl orange
89
Methyl orange gives red color in
A. Sodium carbonae solution
B. Sodium chloride solution
C. Hydrochloric acid solution
D. Potassium hydroxide solution
Hydrochloric acid solution
90
Which of the ff is the most soluble in water?
A. AgI
B. AgCl
C. AgBr
D. Ag2S
AgCl
91
Sodium salts import a strong yellow color to Bunsen flame. The sodium flame is obscured by
A. Chromium glass
B. Nickel glass
C. Ruby glass
D. Cobalt glass
Cobalt glass
92
Acidic color of methyl orange with pH range 3-4.1
Red
93
How many base units are there in SI systems
7
94
Isopropyl alcohol is
A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. Phenol
B
95
Oxidation of secondary alchol results to
Ketone
96
Sources of alkanes:
I. Natural glass
II. Petroleum
III. Quartz
IV. Limestone
I and II
97
Oxidation of primary alcohol yields
Aldehydes
98
Oxygen double bonded with carbon is
A. Hydroxyl
B. Carboxyl
C. Carbonyl
D. Alkyl
Carbonyl
99
Methane is ______ at room temp
| Solid,liq or gas
Gas
100
The least number of atoms in alkynes is
4
101
Ethylene glycol is
A. Triol
B. Diol
C. Ester
D. Phenol
Diol
102
Another name for nylon is a/an
A. Amide
B. Polyamide
C. Ester
D. Polyester
Polyamide
103
A carbonyl compound is one carbon and one oxygen bonded by a double bond
Not a question
104
It is obtained from the milky secretion of various plants such as the tree Hevea brasilienses
Natural rubber
105
Compounds with general formula (C5H6)n
A. Alkenes
B. Terpenes
C. Elastomers
D. Enantiomers
Terpenes
106
Polymer used in making pipes, rain coats and shower curtains
PVC
107
Polymer used in non-stick frying pans and other cooking wares
Teflon
108
Butyric acid is found mainly in
A. Rancid butter
B. Animal fats
C. Citrus fruits
D. Cellulose
A
109
Plastic used for synthetic leather
PVC
110
What could be used to produce an alkene in one step?
A. An alcohol
B. An alkene
C. An acid
D. An alkali metal
An alkene
111
A compound formula C4H5O could be any of the ff, except
A. Ether
B. Aldehyde
C. Alcohol
D. Carboxylic acid
D
112
Which compound has the lowest boiling pt?
A. Methane
B. Ethane
C. Ethene
D. Ethyne
Methane
113
Teflon that is commonly used in cooking utensils and insulations is made up of what monomer?
Tetrafluoroethylene
114
All fats are
A. Acids
B. Unsaturated
C. Ketones
D. Esters
Esters
115
Functional group common to aldehydes and carboxylic acids
Carbonyl group
