HESI A2
HESI A2 Physics
1. During adiabatic compression of a gas, what happens to its temperature?
- A. Remains constant
- B. Decreases
- C. Increases
- D. Becomes unpredictable without additional information
Correct answer: C
Rationale: During adiabatic compression, the gas's temperature increases. This is because no heat is exchanged with the surroundings, and all the work done on the gas results in an increase in internal energy. Choice A is incorrect because the temperature does not remain constant during adiabatic compression. Choice B is incorrect as the temperature does not decrease. Choice D is incorrect as the behavior of the gas's temperature during adiabatic compression is predictable based on the principles of thermodynamics.
2. Contact dermatitis occurs through the sense of ___________.
- A. smell
- B. taste
- C. touch
- D. sight
Correct answer: C
Rationale: Contact dermatitis occurs through the sense of touch when the skin comes into direct contact with irritants or allergens, leading to an inflammatory reaction. This condition is commonly caused by the skin being in contact with items like certain chemicals, fabrics, plants, or metals, resulting in redness, itching, and sometimes blisters. The other choices (smell, taste, sight) do not relate to the cause of contact dermatitis, which specifically involves the skin's direct contact with irritants or allergens.
3. What is the meaning of venal?
- A. Vibrant
- B. Savage
- C. Greedy
- D. Fortunate
Correct answer: C
Rationale: The word 'venal' means susceptible to corruption, especially by bribery. It is often used to describe individuals who are willing to do dishonest or immoral acts in exchange for money or favors. Therefore, the most appropriate synonym for 'venal' among the given choices is 'greedy.' 'Vibrant' means full of energy and life, 'savage' refers to fierce or violent behavior, and 'fortunate' means having good luck or being favored by fortune, none of which capture the meaning of 'venal.'
4. Which part of the brain is involved in processing visual information?
- A. Frontal lobe
- B. Parietal lobe
- C. Occipital lobe
- D. Temporal lobe
Correct answer: C
Rationale: The occipital lobe, located at the back of the brain, is primarily responsible for processing visual information received from the eyes. It plays a crucial role in interpreting and making sense of the visual stimuli perceived by the eyes, such as shapes, colors, and movement. This region is essential for visual perception and is specialized for processing and analyzing visual input, making it the correct answer. The frontal lobe is primarily involved in higher cognitive functions like decision-making and problem-solving, not visual processing. The parietal lobe is more related to sensory processes and spatial awareness, while the temporal lobe is primarily involved in processing auditory information and memory, not visual processing.
5. Which word correctly completes the sentence? 'I ___ the package on the table.'
- A. Layed
- B. Drop
- C. Laid
- D. Lay
Correct answer: C
Rationale: The correct answer is 'C: Laid.' 'Laid' is the correct past tense form of 'lay,' which means to put something down. 'Layed' in choice A is incorrect as the past tense of 'lay' is 'laid,' not 'layed.' Choice B, 'Drop,' is incorrect as it does not fit the context of placing something on the table. Choice D, 'Lay,' is the base form of the verb and does not fit the sentence in the past tense.
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