Statement-I: At any level of temperature (-6^(@)C "to" 300^(@)C) the elevation or depression can be measured by adjusting the Hg level in the bulb of Beckman's thermometer unlike in convention thermometer . Statement-II: In Cottrell's method, pumping device which resembles an inverted funnel is used to reduce superheating during boiling . (III): Rast's method is generally used for Solid solution (solute-solid, solvent-solid) Statement-IV: In Berckeley-Hartley method, copper ferrocynaide is precipitated in the pores Correct statement is /are:

Statement-I: At any level of temperature (-6^(@)C "to" 300^(@)C) the e

1.	Statement-I: At any level of temperature (-6^(@)C "to" 300^(@)C) the elevation or depression can be measured by adjusting the Hg level in the bulb of Beckman's thermometer unlike in convention thermometer . Statement-II: In Cottrell's method, pumping device which resembles an inverted funnel is used to reduce superheating during boiling . (III): Rast's method is generally used for Solid solution (solute-solid, solvent-solid) Statement-IV: In Berckeley-Hartley method, copper ferrocynaide is precipitated in the pores Correct statement is /are:
Answer» only I, II only I,III only I,II, III all Answer :D