NEX Exam Dumps : Nursing Entrance Exam (Math, Science and Verbal)

Water is a polar molecule because it has an unequal distribution of electrical charge, with a slightly negative oxygen atom and slightly positive hydrogen atoms. This polarity causes water molecules to attract one another through hydrogen bonding. Option C demonstrates this property because water molecules stick together (cohesion) and do not mix with nonpolar substances like oil. Oil molecules lack polarity and cannot form hydrogen bonds with water, so the two substances separate into layers. The other options describe physical movement, gravity, or resistance, none of which are direct results of polarity. The NEX Science exam frequently tests molecular properties such as polarity by connecting them to real-world examples like oil and water separation. Recognizing hydrogen bonding and cohesion as outcomes of water’s polarity is essential for answering these questions correctly.

The alarm stage is the initial reaction to a stressor and is characterized by emotional outbursts, increased heart rate, and release of stress hormones such as adrenaline. The employee’s immediate anger and physical reaction reflect this stage. The resistance stage involves adaptation, and exhaustion occurs after prolonged stress. “Failure” is not a recognized stage of the stress response. The NEX Science exam frequently tests physiological and psychological responses to stress, making alarm the correct answer.

The passage clearly states that reducing smoking rates lowers the incidence of heart disease, lung cancer, and stroke. These are chronic diseases, making option C the correct answer. The other options are either not mentioned or incorrect. On the NEX exam, cause-and-effect reading questions require identifying outcomes that are directly linked to actions described in the passage. Choosing the most clearly stated effect is essential.

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