Nursing Elites

1. Which of the following sentences uses a comma correctly?

• A. Let's eat Grandma!
• B. Let's eat, Grandma!
• C. Lets eat, Grandma!
• D. Lets, eat Grandma!

Correct answer: B

Rationale: The correct answer is B: 'Let's eat, Grandma!' The comma is correctly used to separate the direct address 'Grandma' from the rest of the sentence. In choice A, there should be a comma after 'eat' to separate the direct address. Choice C is missing an apostrophe in 'Lets,' and there should be a comma after 'eat' to separate the direct address. Choice D incorrectly places a comma after 'Lets,' and there should be a comma after 'eat' to separate the direct address.

2. What is the term for the process of breaking a large molecule into smaller fragments by applying heat?

• A. Polymerization
• B. Hydrogenation
• C. Isomerization
• D. Pyrolysis

Correct answer: D

Rationale: Pyrolysis is the correct answer. It is the process of breaking down large molecules into smaller fragments by applying heat in the absence of oxygen. This results in the decomposition of molecules into simpler compounds. Polymerization, the process of synthesizing large molecules from smaller units, is incorrect as it is the opposite process. Hydrogenation involves adding hydrogen atoms to a compound, usually with a catalyst, which is not related to breaking down large molecules. Isomerization refers to rearranging atoms within a molecule to form isomeric compounds with the same molecular formula but different structural arrangements, which is also unrelated to the process described in the question.

3. Two boxes are stacked, one measuring 4 inches tall and the other 6 inches tall. What is the total height of the stacked boxes?

• A. 10 inches
• B. 12 inches
• C. 8 inches
• D. 9 inches

Correct answer: A

Rationale: To find the total height of the stacked boxes, you need to add the height of each box together. Therefore, 4 inches (height of the first box) + 6 inches (height of the second box) = 10 inches, which is the total height of the stacked boxes. Choice B (12 inches) is incorrect because it adds the heights incorrectly. Choice C (8 inches) is incorrect as it does not consider both box heights. Choice D (9 inches) is incorrect as it also does not add the heights accurately.

4. When a researcher submits a paper for publication in a scientific journal, the editors give it to other scientists to review. Which of the following options best uses grammar to combine the sentences above for clarity?

• A. When a researcher submits a paper for publication in a scientific journal, the editors give it to other scientists to review.
• B. The editors give it to other scientists after a researcher submits a paper for publication in a scientific journal, and they review it.
• C. A researcher submits a paper for publication in a scientific journal, and then the scientists review the paper because the editors gave it to other scientists.
• D. The scientists review the paper after the editors give it to them when a researcher submits a paper for publication in a scientific journal.

Correct answer: A

Rationale: The correct answer is A: "When a researcher submits a paper for publication in a scientific journal, the editors give it to other scientists to review." This option provides a clear and concise way to combine the two sentences. It maintains the logical sequence of events: first, the researcher submits the paper, and then the editors pass it to other scientists for review. Option B introduces unnecessary complexity by separating the actions in a less fluid manner. Option C confuses the sequence of events by implying that the scientists review the paper because the editors already gave it to them, which is not the intended order of actions. Option D also disrupts the chronological order of events by placing the scientists' review before the editors give them the paper, making it less clear and accurate compared to the correct answer, option A.

5. Find the lowest coefficients that will balance the following combustion equation: __C H + __O2 → __CO2 + __H2O

• A. 1:5:5:2
• B. 4:10:20:8
• C. 2:9:10:4
• D. 2:5:10:4

Correct answer: C

Rationale: To balance the combustion equation CxHy + O2 → xCO2 + y/2 H2O, we need to balance the carbon and hydrogen atoms. The balanced equation for the given combustion is: 2C H4 + 9O2 → 2CO2 + 4H2O. This means that the correct coefficients are 2:9:10:4, which corresponds to choice C. Choice A (1:5:5:2) does not balance the equation correctly, choice B (4:10:20:8) has excessive oxygen and does not balance the equation, and choice D (2:5:10:4) does not provide the correct ratio of oxygen to balance the equation.

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