Liquid crystalline substances are used to locate tumors in the body because:
Correct answer: A. These parts of the body are warmer than the surroundings
- A. These parts of the body are warmer than the surroundings
- B. These parts of the body are cooler than the surroundings
- C. These parts of the body are constantly increasing and decreasing with the temperature
- D. None of the above options are correct
Explanation
Liquid crystalline substances are used to locate the viens, arteries, infections, and tumors. The reason is that these parts of the body are warmer than the surrounding tissues.
This question appeared on the ETEA MDCAT 2014 paper, which you can sit online with every answer explained.
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About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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