MULTIPLE CHOICE A, B, C ,D ONLY

Question are multiple choice, just select A,B,C ,D……NO NEED TO GO INTO FURTHER DETAIL….

QUESTION 1

2 points  

QUESTION 2

1. Which of the following is ethylene?

   CH2=CHCH3

   CH2=CH2

   H-C=C-H

   CH3-CH3

2 points  

QUESTION 3

1. Which alcohol is called wood alcohol?

   Ethanol

   Isopropyl alcohol

   1-propanol

   Methanol

2 points  

QUESTION 4

1. The complete combustion of C2H6 yields

   C2H4 and H2

   CO and H2O

   CO2 and H2O

   C and H2

2 points  

QUESTION 5

1. A compound containing seven carbon atoms could be

   Heptane

   Octane

   Hexane

   Nonane

2 points  

QUESTION 6

1. Fermentation of carbohydrates is a source of

   MTBE

   Ethanol

   Ethers

   Methanol

2 points  

QUESTION 7

1. If the half-life of an element is 5 days and 100 milligrams of that element is initially available, how many milligrams of the element are present after 25 days?

   50 mg

   100/25 mg

   100/32 mg

   100/64 mg

2 points  

QUESTION 8

1. In the symbol 238U, the 238 is

   The mass number

   The atomic number

   The number of neutrons in the atom

   The number of protons in the atom

2 points  

QUESTION 9

1. The product of the beta (0-1 β) decay of thorium-234 is

   Uranium-238

   Protactinium-234

   Uranium-234

   Uranium-2

2 points  

QUESTION 10

1. In terms of nuclear stability, which of the following atoms is the most stable?

   Fe

   H

   U

   Element 109

2 points  

QUESTION 11

1. Which statement is not true about fission?

   Combination of atomic nuclei

   Process requires initiation by a neutron

   A chain reaction

   Products have smaller nuclei than reactants

2 points  

QUESTION 12

1. Which of the following is not a current application of radioactivity?

   Food irradiation

   Radiocarbon dating

   Medical imaging

   Electrical energy from fusion reactions

2 points  

QUESTION 13

1. What is the percent of ethanol in rum that is 140 proof?

   35%

   70%

   280%

   75%

2 points  

QUESTION 14

1. The oxidation of primary alcohols can produce

   Carboxylic acids

   Amines

   Ketones

   Esters

2 points  

QUESTION 15

1. What is the role of an organic peroxide in the polymerization of ethylene?

   The peroxide is a copolymer.

   The peroxide forms free radicals that initiate attack of double bonds.

   The peroxide destroys free radicals which could stop the reaction.

   The peroxide moderates the speed of the reaction, allowing for a more orderly process.

2 points  

QUESTION 16

1. Which of the following is an incorrect pairing between the given formula and the type of functional group?

   CH2=CHCH2CH2CH2CH2CH2CH3, alkene

   CH3OCH3, amine

   CH3CH2OH, alcohol

   (CH3)2CO, ketone

2 points  

QUESTION 17

1. An organic compound with an — NH2 functional group is a (n)

   Primary amine

   Ketone

   Ether

   Primary alcohol

2 points  

QUESTION 18

1. In a condensation polymerization process, what happens to form the polymer chain?

   Small molecules such as water are split out and monomers are linked.

   Small molecules such as water are required for the bonding link.

   Small molecules may be split out or are required depending on whether an ester or an ether linkage is formed.

   Small molecules such as water are moved from one position to another.

2 points  

QUESTION 19

1. Which object/objects are not chiral?

   Your hands

   Helical sea shells

   Spoons

   Golf clubs

2 points  

QUESTION 20

1. For the peptide shown, which number indicates the peptide bond?

   

   A

   B

   C

   D

2 points  

QUESTION 21

1. Which is NOT an organic functional group characteristic of carbohydrates?

   –CHO

   –OH

   –C-C-

   –NH2

2 points  

QUESTION 22

1. How many natural occurring amino acids are known?

   20

   70

   Hundreds

   Thousands

2 points  

QUESTION 23

1. The folded structure of polypeptide chains held in place by —S—S— bonds is

   Primary structure

   Secondary structure

   Tertiary structure

   Quaternary structure

2 points  

QUESTION 24

1. Base pairing between the two strands of DNA occurs by means of

   Hydrogen bonding

   Coordinate covalent bonds

   Ionic bonds

   Disulfide bonds

2 points  

QUESTION 25

1. Digestion converts carbohydrates into

   Amino acids

   Fatty acids

   CO2 and H2O

   Monosaccharides

2 points  

QUESTION 26

1. A food Calorie is equal to how many small calories?

   1000 cal

   10 cal

   1 cal

   0.001 cal

10 points  

QUESTION 27

1. Which vitamin is most easily destroyed or removed by food processing that involve freezing?

   Vitamin F

   Vitamin E

   Vitamin D

   Vitamin B

10 points  

QUESTION 28

1. How many Calories are in a sandwich that contains 5 g of fat, 25 g of carbohydrates, 7 g of protein and 3 g of fiber?

   173 Cal

   185 Cal

   148 Cal

   333 Cal

10 points  

QUESTION 29

1. A blood serum cholesterol level of 240. mg/100 mL serum is considered to put a person at a high risk of heart disease.  How much cholesterol in milligrams would be carried in the blood serum of a person with blood volume of 11.0 pints?   (1 pint = 473 mL)

   103 mg

   1.25 x 106 mg

   5.20 x 103 mg

   12,500 mg

10 points  

QUESTION 30

1. Which of the following list contains the abbreviation for “good” cholesterol and describes its function?

   LDL, transports cholesterol to arteries

   HDL, transports cholesterol to arteries

   LDL, transports cholesterol to liver for excretion

   HDL, transports cholesterol to livers for excretion

10 points  

QUESTION 31

1. In all age groups, the leading cause of death at about 26% is

   Cerebrovascular diseases

   Accidents

   Heart disease

   Cancer

10 points  

QUESTION 32

1. Penicillins work by

   Interfering with cell metabolism

   Preventing ovulation

   Shutting down production of folic acid

   Inhibiting enzyme that forms cross-linking in bacteria cell wall synthesis

10 points  

QUESTION 33

1. A sun-screen suntan lotion that has an SPF rating of 16. What does this mean in terms of sun exposure?

   Allows a person to have 16 hours of sun exposure without burning

   Increases the skin’s natural sunburn protection by a multiple of 4

   Increases the skin’s natural sunburn protection by a multiple of 16

   Increases the skin’s natural sunburn protection by a multiple of 2 x 16

10 points  

QUESTION 34

1. Which of the following is the most toxic based on these oral rat LD50 values?

   Lead, 20 mg / kg body eight

   Aspirin, 1750 mg / kg body weight

   Ethanol, 1000 mg / kg body weight

   Nicotine, 2 mg / kg body weight

10 points  

QUESTION 35

1. As the LD50 of a substance increases, the associated toxicity will

   Increase

   Decrease

   Remain the same

10 points  

QUESTION 36

1. What does a virus use to translate its own RNA into double-stranded DNA?

   Polymerase

   Protease

   Reverse transcriptase

   Ribosome

10 points  

QUESTION 37

1. Toxicity data are tabulated for rats, mice, rabbits and small lab animals. Why isn’t there any human LD50 data?

   Humans require large doses that would be too expensive

   Humans are not as genetically uniform as lab animals

   Human subjects require too much attention

   It is unethical and illegal to do toxicity tests on humans

10 points  

QUESTION 38

1. Which form of iron contains the least amount of carbon?

   Steel

   Pig iron

   Cast iron

   These forms of iron contain no carbon

10 points  

QUESTION 39

1. Amorphous materials

   Are solids like tar and glass that lack internal order

   Are solids with regular order

   Have a definite crystal structure

   Are crystalline solids

10 points  

QUESTION 40

1. Superconductivity is the result of

   Extremely low electrical resistance

   Increases in available energy

   Very high concentrations of electrical charge

   Higher levels achieved in the purity of copper

10 points  

QUESTION 41

1. Solar cells can be

   Built only using layers of p-type transistors

   Built only using layers of n-type transistors

   Built using alternate layers of n-type and p-type transistors

   Rechargeable

10 points  

QUESTION 42

1. How many valence electrons would be found in an atom used as dopant in a p-type semiconductor?

   3

   4

   5

   6

10 points  

QUESTION 43

1. What structural unit is characteristic of quartz and most silicates?

   Planar

   Trigonal planar

   Tetrahedral

   Linear

10 points  

QUESTION 44

1. Which of the following metals and ores is not a correct pair?

   Zinc, ZnS

   Iron, Fe2O3

   Gold, AuO

   Lead, PbS

10 points  

QUESTION 45

1. A complete fertilizer is one that contains a mixture of the

   Organic nutrients

   Primary nutrients

   Secondary nutrients

   All nutrients

10 points  

QUESTION 46

1. Which is a property of DDT?

   Chlorine free

   Fat-soluble

   High toxicity to mammals

   Chemically unstable

10 points  

QUESTION 47

1. The principal compound in potash is

   KCl

   K2CO3

   K2O

   K2SO4

10 points  

QUESTION 48

1. A bag of fertilizer is labeled 16-4-8.  How many pounds of P are in a 100 lb bag?a.16 lbb.4.0 lbc.1.8 lbd.7.0 lbe.2.2 lb

   16 lb

   4.0 lb

   1.8 lb

   7.0 lb

10 points  

QUESTION 49

1. Plants extract nonmineral nutrients from

   The ground

   The air

   Water

   Organic matter

10 points  

QUESTION 50

1. Which of the following ions is least likely to be leached from soil by natural water movement?

   Fe3+

   Ca2+

   Na+

   Mg2+