id
stringclasses 4
values | question
stringclasses 4
values | choices
dict | answerKey
stringclasses 4
values | rationale
stringclasses 4
values |
|---|---|---|---|---|
Mercury_SC_415702
|
George wants to warm his hands quickly by rubbing them. Which skin surface will produce the most heat?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"dry palms",
"wet palms",
"palms covered with oil",
"palms covered with lotion"
]
}
|
A
|
Dry surfaces will more likely cause more friction via rubbing than other smoother surfaces, hence dry palms will produce the most heat.
|
Mercury_7220990
|
Which factor will most likely cause a person to develop a fever?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"a leg muscle relaxing after exercise",
"a bacterial population in the bloodstream",
"several viral particles on the skin",
"carbohydrates being digested in the stomach"
]
}
|
B
|
Option B, bacterial population is the most likely cause for a person developing fever.
|
Mercury_7205118
|
Which change in the state of water particles causes the particles to become arranged in a fixed position?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"boiling",
"melting",
"freezing",
"evaporating"
]
}
|
C
|
When water is freezed, the particles are arranged in a fixed position; the particles are still moving for all other options.
|
Mercury_SC_401169
|
When a switch is used in an electrical circuit, the switch can
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"cause the charge to build.",
"increase and decrease the voltage.",
"cause the current to change direction.",
"stop and start the flow of current."
]
}
|
D
|
The function of a switch is to start and stop the flow of a current.
|
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