Nursing Elites

1. What does 'Aggregate' mean?

• A. A part of the whole
• B. A sum total of many things
• C. A small fraction
• D. A gradual reduction

Correct answer: B

Rationale: The correct answer is B: 'A sum total of many things.' Aggregate refers to the total or sum of different elements or components. Choice A, 'A part of the whole,' is incorrect as aggregate does not refer to just a part but the whole combined. Choice C, 'A small fraction,' is incorrect as aggregate denotes a larger amount, not a small fraction. Choice D, 'A gradual reduction,' is incorrect as aggregate does not imply reduction but rather accumulation or combination.

2. What is the charge of an alpha particle?

• A. -1
• B. +1
• C. +2
• D. No charge

Correct answer: C

Rationale: An alpha particle consists of two protons and two neutrons, resulting in a total charge of +2 due to the presence of two positively charged protons. Therefore, the correct answer is C, indicating a charge of +2. Choices A, B, and D are incorrect because an alpha particle is positively charged due to the two protons it contains, resulting in a charge of +2.

3. There was no _____ for the way she treated her boyfriend.

• A. Alibi
• B. Rational
• C. Reasonable
• D. Justification

Correct answer: D

Rationale: The correct answer is 'D: Justification.' Justification means showing that an action is reasonable or right. In this context, it implies that there was no valid reason or excuse for the way she treated her boyfriend. Choices A, B, and C are incorrect. An 'alibi' is an excuse to explain one's whereabouts during a crime, not applicable here. 'Rational' means based on reason or logic, which does not fit the context of the sentence. 'Reasonable' means fair and sensible, but the sentence suggests a lack of valid explanation rather than fairness or sensibility.

4. 12 is a/an:

• A. even number
• B. odd number
• C. prime number
• D. composite number

Correct answer: A

Rationale: Rationale: - An even number is an integer that is exactly divisible by 2, meaning there is no remainder when divided by 2. - The number 12 can be divided by 2 evenly, as 12 ÷ 2 = 6, with no remainder. - Therefore, 12 is classified as an even number.

5. If electrons are not shared equally in a covalent bond, the bond is what?

• A. Polar
• B. Non-polar
• C. Ionic
• D. Hydrogen

Correct answer: A

Rationale: A polar covalent bond occurs when electrons are shared unequally between atoms. In this type of bond, one atom has a stronger pull on the shared electrons, leading to a partial positive and partial negative charge distribution within the molecule. Choice B, non-polar, is incorrect because in non-polar covalent bonds, electrons are shared equally between atoms. Choice C, ionic, is incorrect as ionic bonds involve a transfer of electrons rather than sharing. Choice D, hydrogen, is incorrect as it does not describe the nature of a covalent bond.

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