Q9 of 25 Page 154

Soil cannot store more nitrogen than it can hold. Hence soil is said to be in a state of

_________. (saturation, unsaturation)

Soil cannot store more nitrogen than it can hold. Hence soil is said to be in a state of saturation.

A state of saturation means that no more solute can be dissolved in a given amount of solvent at a particular temperature and state of unsaturation means that more of the solute can be dissolved in a given amount of solvent at a particular temperature.


So, if soil cannot store more nitrogen than it can hold, it means that it has attained the state of saturation.


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The number of components in a binary solution are/is _______ ( one / two)

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The mixture of gases used by deep-sea divers is _______(helium-oxygen, oxygen-nitrogen)

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In an endothermic process, solubility increases with _________ in temperature. (increase, decrease)

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Aquatic species are more comfortable in cold water because __________

i). as the temperature decreases, the solubility of dissolved oxygen increases.


ii) as the temperature increases, the solubility of dissolved oxygen increases.


iii) as the temperature increases, the solubility of dissolved oxygen decreases.