Nursing Elites

1. How many electron pairs are shared to form a triple covalent bond?

• A. 1
• B. 2
• C. 3
• D. 4

Correct answer: C

Rationale: The correct answer is C. In a triple covalent bond, three pairs of electrons are shared between two atoms. This sharing results in a total of six electrons being shared, making the bond strong. Choice A (1) is incorrect because a single covalent bond involves the sharing of one pair of electrons. Choice B (2) is incorrect as a double covalent bond consists of the sharing of two pairs of electrons. Choice D (4) is incorrect because there are only three pairs of electrons shared in a triple covalent bond, not four.

2. Which of the following is not mentioned as a detail in the passage about Sickle-Cell Anemia?

• A. People of South American or African descent may be prone to sickle-cell anemia.
• B. Symptoms of sickle-cell anemia may include sudden occurrences of extreme abdominal and back pain.
• C. The red blood cells of sickle-cell patients are unusually shaped, forming crescent or sickle shapes.
• D. Vitamin and mineral deficiencies may result in some anemia.

Correct answer: D

Rationale: The correct answer is D because the passage does not mention anything about vitamin and mineral deficiencies in relation to sickle-cell anemia. Choice A is incorrect as the passage specifies that sickle-cell anemia is more common among people of South American or African descent. Choice B is correct as the passage states that symptoms of sickle-cell anemia can include sudden occurrences of extreme abdominal and back pain. Choice C is correct as the passage describes that the red blood cells of sickle-cell patients are unusually shaped, forming crescent or sickle shapes. The passage does not discuss any relationship between vitamin and mineral deficiencies and sickle-cell anemia, making choice D the correct option.

3. Select the word that makes this sentence grammatically correct: 'Is the new student coming out to lunch with ____?'

• A. we
• B. our
• C. us
• D. they

Correct answer: C

Rationale: In this sentence, 'us' is the correct pronoun to use. The sentence should read, 'Is the new student coming out to lunch with us?' 'Us' is the objective pronoun that functions as the object of the preposition 'with.' Choice A, 'we,' is incorrect because 'we' is a subject pronoun and does not fit the prepositional phrase 'with us.' Choice B, 'our,' is a possessive pronoun, which is also incorrect in this context. Choice D, 'they,' is a subject pronoun and does not agree with the preposition 'with.' Therefore, the correct answer is 'C: us.'

4. Select the word or phrase that will make the sentence grammatically correct. The village is not very far _________ the railway station.

• A. to
• B. from
• C. by
• D. next

Correct answer: B

Rationale: The correct preposition to use in this sentence is 'from.' When referring to the distance between two locations, we use 'from' to indicate the starting point and 'to' to indicate the destination. In this case, the village is not very far from the railway station, showing the distance between the two places. Choice A ('to') is incorrect as it implies the village is far in the direction of the railway station. Choice C ('by') is incorrect as it suggests proximity rather than distance. Choice D ('next') is incorrect as it indicates the location of the village in relation to the railway station, not the distance between them.

5. Farmer Juan finds that it takes 2 chickens to produce 6 eggs in 24 hours. How many chickens are needed to produce 24 eggs in 24 hours?

• A. 48
• B. 18
• C. 8
• D. 6

Correct answer: C

Rationale: If 2 chickens produce 6 eggs in 24 hours, to produce 24 eggs in the same time frame, you would need 8 chickens. Therefore, Choice C is correct. Choice A (48) is incorrect because it miscalculates the number of chickens required. Choice B (18) is incorrect as it does not consider the proportional relationship between chickens and eggs. Choice D (6) is incorrect as it doesn't account for the increased number of eggs.

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