OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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nonpolar fats and oils
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polar sugar molecules
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salt made of a positive sodium ion and a negative chloride ion
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all of the substances will dissolve easily in water
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Detailed explanation-1: -Hydrogen bonds are not readily formed with nonpolar substances like oils and fats . These nonpolar compounds are hydrophobic (“water-fearing”) and will not dissolve in water. Figure 2.7 As this macroscopic image of oil and water shows, oil is a nonpolar compound and, hence, will not dissolve in water.
Detailed explanation-2: -Since the hydrocarbon chains are very non-polar, fats do no dissolve in water; instead, fat molecules tend to coalesce with one another.
Detailed explanation-3: -Oil doesn’t dissolve in water, i.e., it is immiscible in water. This is because its molecules are non-polar while water is a polar solvent. Non-polar substances do not dissolve in polar solvents and vice-versa.
Detailed explanation-4: -C2H6 being non-polar is least soluble in water (Given the polar nature of H2O).
Detailed explanation-5: -These molecules don’t have regions of partial positive or partial negative charge, so they aren’t electrostatically attracted to water molecules. Thus, rather than dissolving, nonpolar substances (such as oils) stay separate and form layers or droplets when added to water.