Give suitable chemical terms for the following:
Certain water soluble substances, when exposed to the atmosphere at ordinary temperatures, absorb moisture from the atmospheric air becomes moist and dissolve in the absorbed water.

Give suitable chemical terms for the following : A definite number of water molecules bound to some salts.

Give suitable chemical terms for The process in which a substance absorbs moisture from the atmospheric air to become moist, and ultimately dissolves in the absorbed water.

Which one of the following plants absorbs water from the atmosphere?

State the term : (Do not give examples) When a substance absorbs moisture from the atmosphere, but does not form solution.

Give reasons for the following: The percentage of oxygen, in air dissolved in water, is higher than the percentage of oxygen in ordinary air.

Complete the statements by filling the blanks with the correct word from the bracket. Hygroscopic substance absorb moisture from the atmosphere & …………..(do not change/change) their original state.

Give one word or a phrase for the statement: The property by which certain hydrated salts when left exposed to the atmosphere, lose their water of crystallization & crumble into powder

From the list, given below, select the correct answers for [Isobars, Isotopes, Efflorescence, Hygroscopy, Charles's law, Boyle's law, Kelvin, Thermal dissociation, Thermal decomposition]. A phenomenon where a compound absorbs moisture from the atmosphere when it is exposed to it but not enough to form a solution.

Most substances contract on freezing . However, water does not belong to this category. We know that water expands on freezing. Further , coefficient of volume expansion of water in the temperature range from 0^(@)C to 4^(@)C is negative and above 4^(@)C it is positive . This behaviour of water shapes the freezing of lakes as the atmospheric temperature goes down and it is still above 4^(@)C . If the atmospheric temperature is below 0^(@)C and ice begins to form at t = 0 , thickness of ice sheet formed up to a time 't' will be directly proprotional to

Only the surface atoms in an adsorbent play an active role in adsorption. These atoms possess some residual force such as van der Waals forces and chemical forces. In the process of adsorption. Weak adsorbate is substituting by strong adsorbete. Activated charcoal used in the gas mask is already exposed to the atmospheric air, so gases and water vapours in air are adsorbed on its surface. When the mask is exposed to chlorine atmosphere, the gases are displaced by chlorine. In general, easily liquefiable gases such as CO_(2),NH_(3),Cl_(2), and SO_(2) are adsorbed to a greater extent than the elemental gases, e.g., H_(2),N_(2),O_(2), He, etc. Gas mask works on the principle of