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Question 1 of 10
1. Question
When an engine runs without oil, severe engine damage may result. Which of the following does not describe what oil can help in terms of engine lubrication?
Correct
Oil does more than all that it also reduces friction, reduces noise, and extends engine life.
Incorrect
Oil does more than all that it also reduces friction, reduces noise, and extends engine life.
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Question 2 of 10
2. Question
The first few seconds after starting an engine are the most crucial time to extend its life. Which of the following statements is true to prevent the wearing and prolong the life of an engine?
Correct
During the cold winter weather, oil tends to be cold and thick and may take longer to circulate so you must wait for at least 30 seconds to put a car in gear to lengthen the life of the engine.
Incorrect
During the cold winter weather, oil tends to be cold and thick and may take longer to circulate so you must wait for at least 30 seconds to put a car in gear to lengthen the life of the engine.
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Question 3 of 10
3. Question
During emergencies, Pure water is often used to cool an engine down. Which of the following statements is not true as to why Pure water is not a good coolant for a radiator?
Correct
Pure water freezes and expands not downsizes to become ice. This expansion will cause damage and crack the cylinder block or head castings or split radiator seams.
Incorrect
Pure water freezes and expands not downsizes to become ice. This expansion will cause damage and crack the cylinder block or head castings or split radiator seams.
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Question 4 of 10
4. Question
Which of the following best describes a Carburetor?
Correct
As of these times, Carburetors are not often used on modern engines. One of the reasons is that because of its positioning on top of the intake manifold, it cannot provide an optimum fuel mixture to each cylinder.
Incorrect
As of these times, Carburetors are not often used on modern engines. One of the reasons is that because of its positioning on top of the intake manifold, it cannot provide an optimum fuel mixture to each cylinder.
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Question 5 of 10
5. Question
The following are reasons why eubacteria species are beneficial to our environment, except:
Correct
It was cyanobacteria, not eubacteria that were among the first photosynthetic organisms to colonize the Earth’s surface.
Incorrect
It was cyanobacteria, not eubacteria that were among the first photosynthetic organisms to colonize the Earth’s surface.
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Question 6 of 10
6. Question
Which of these defines a Combustion reaction according to the types of chemical reaction?
Correct
The best example of a Combustion reaction is burning charcoal in a fire grill when people are trying to cook.
Incorrect
The best example of a Combustion reaction is burning charcoal in a fire grill when people are trying to cook.
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Question 7 of 10
7. Question
Which of these sea animals does not belong under Phylum Echinodermata?
Correct
Phylum Echinodermata are animals that have spiny skin that helps protect them from predators.
Incorrect
Phylum Echinodermata are animals that have spiny skin that helps protect them from predators.
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Question 8 of 10
8. Question
Which of the following is not an example of a useful carbohydrate?
Correct
Fructose acts as a fermentable carbohydrate and may cause a low rise in blood sugar levels.
Incorrect
Fructose acts as a fermentable carbohydrate and may cause a low rise in blood sugar levels.
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Question 9 of 10
9. Question
Which of the following is not true about the process of the Human Excretory System?
Correct
Blood, not bodily fluids enter the kidneys through renal arteries and leaves through renal veins.
Incorrect
Blood, not bodily fluids enter the kidneys through renal arteries and leaves through renal veins.
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Question 10 of 10
10. Question
Which of the following statements is true about Human Reproduction System?
Correct
The Human Reproduction System is a vital process for the survival of a species because this process entails the male and female to produce a network of hormones secreted that controls both the male and female reproductive systems and assists in the growth and development of the fetus, as well as the birthing process.
Incorrect
The Human Reproduction System is a vital process for the survival of a species because this process entails the male and female to produce a network of hormones secreted that controls both the male and female reproductive systems and assists in the growth and development of the fetus, as well as the birthing process.