319141 If the elevation in boiling point of a solution of 10 g of solute (mol. wt. = 100) in 100 g of water is \(\Delta {T_b}\), the ebullioscopic constant of water is

319142 At certain Hill-station pure water boils at \({\rm{99}}{\rm{.72}}{{\rm{5}}^{\rm{^\circ }}}{\rm{C}}\). If \({{\rm{K}}_{\rm{b}}}\) for water is \({\rm{0}}{\rm{.51}}{{\rm{3}}^{\rm{^\circ }}}{\rm{C}}{\mkern 1mu} {\mkern 1mu} {\rm{Kg}}{\mkern 1mu} {\mkern 1mu} {\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\). The boiling point of 0.69 m solution of urea will be

319143 Assertion :
In a pressure cooker, the water is brought to boil. The cooker is then removed from the stove. Now, on removing the lid of pressure cooker, the water starts boiling again.
Reason :
The impurities in water bring down its boiling point.

319144 At \({\rm{10}}{{\rm{0}}^{\rm{^\circ }}}{\rm{C}}\) the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If \({{\rm{K}}_{\rm{b}}}{\rm{ = 0}}{\rm{.52}}\), the boiling point of this solution will be:

319141 If the elevation in boiling point of a solution of 10 g of solute (mol. wt. = 100) in 100 g of water is \(\Delta {T_b}\), the ebullioscopic constant of water is

319142 At certain Hill-station pure water boils at \({\rm{99}}{\rm{.72}}{{\rm{5}}^{\rm{^\circ }}}{\rm{C}}\). If \({{\rm{K}}_{\rm{b}}}\) for water is \({\rm{0}}{\rm{.51}}{{\rm{3}}^{\rm{^\circ }}}{\rm{C}}{\mkern 1mu} {\mkern 1mu} {\rm{Kg}}{\mkern 1mu} {\mkern 1mu} {\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\). The boiling point of 0.69 m solution of urea will be

319143 Assertion :
In a pressure cooker, the water is brought to boil. The cooker is then removed from the stove. Now, on removing the lid of pressure cooker, the water starts boiling again.
Reason :
The impurities in water bring down its boiling point.

319144 At \({\rm{10}}{{\rm{0}}^{\rm{^\circ }}}{\rm{C}}\) the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If \({{\rm{K}}_{\rm{b}}}{\rm{ = 0}}{\rm{.52}}\), the boiling point of this solution will be:

319141 If the elevation in boiling point of a solution of 10 g of solute (mol. wt. = 100) in 100 g of water is \(\Delta {T_b}\), the ebullioscopic constant of water is

319142 At certain Hill-station pure water boils at \({\rm{99}}{\rm{.72}}{{\rm{5}}^{\rm{^\circ }}}{\rm{C}}\). If \({{\rm{K}}_{\rm{b}}}\) for water is \({\rm{0}}{\rm{.51}}{{\rm{3}}^{\rm{^\circ }}}{\rm{C}}{\mkern 1mu} {\mkern 1mu} {\rm{Kg}}{\mkern 1mu} {\mkern 1mu} {\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\). The boiling point of 0.69 m solution of urea will be

319143 Assertion :
In a pressure cooker, the water is brought to boil. The cooker is then removed from the stove. Now, on removing the lid of pressure cooker, the water starts boiling again.
Reason :
The impurities in water bring down its boiling point.

319144 At \({\rm{10}}{{\rm{0}}^{\rm{^\circ }}}{\rm{C}}\) the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If \({{\rm{K}}_{\rm{b}}}{\rm{ = 0}}{\rm{.52}}\), the boiling point of this solution will be:

319141 If the elevation in boiling point of a solution of 10 g of solute (mol. wt. = 100) in 100 g of water is \(\Delta {T_b}\), the ebullioscopic constant of water is

319142 At certain Hill-station pure water boils at \({\rm{99}}{\rm{.72}}{{\rm{5}}^{\rm{^\circ }}}{\rm{C}}\). If \({{\rm{K}}_{\rm{b}}}\) for water is \({\rm{0}}{\rm{.51}}{{\rm{3}}^{\rm{^\circ }}}{\rm{C}}{\mkern 1mu} {\mkern 1mu} {\rm{Kg}}{\mkern 1mu} {\mkern 1mu} {\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\). The boiling point of 0.69 m solution of urea will be

319143 Assertion :
In a pressure cooker, the water is brought to boil. The cooker is then removed from the stove. Now, on removing the lid of pressure cooker, the water starts boiling again.
Reason :
The impurities in water bring down its boiling point.

319144 At \({\rm{10}}{{\rm{0}}^{\rm{^\circ }}}{\rm{C}}\) the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If \({{\rm{K}}_{\rm{b}}}{\rm{ = 0}}{\rm{.52}}\), the boiling point of this solution will be: