Describe Ramsay and Rayleigh's method for the isolation of a mixture of noble gas from air.

Name the method used for isolation of noble gas mixture from air.

In Ramsay and Rayleigh's isolation of noble gases from air,the nitrogen of the air is finally converted into

The best method for the separation of naphthalene and benzoic acid from their mixture is :

A metal is treated with dilute sulphuric acid. The gas evolved is collected by the method shown in the figure: (i) Name the gas (ii) Is the gas soluble or insoluble in water? (iii) Is the gas lighter or heavier than air? (iv) How will you test the gas (v) IF the metal used above in zinc then write the chemical equation for the evolution of gas (vi) Write one industrial use of the gas evolved.

Carbon cannot be used to reduce the oxide of sodium, magnetsium, calcium, etc.to their respective metals. State the method used for obtaining these metals from their salts. For obtaining sodium from its compound. a. Name the salt used, gas produced, and the electrode at which the metal deposits. b. Show the chemical reaction taking place during the process. c. Name any two other metals which can be obtained from its compounds by the above method.

Henry 's law constant for the solubility of N_(2) gas in water at 298 K is 1.0 xx 10^(5) atm . The mole fraction of N_(2) in air is 0.6 . The number of moles of N_(2) from air dissolved in 10 moles of water at 298 K and 5 atm pressure is a. 3.0 xx 10^(-4) b. 4.0 xx 10^(-5) c. 5.0 xx 10^(-4) d. 6.0 xx 10^(-6)

Describe briefly the method to obtain mercury from Cinnabar. Write the chemical equations for the reactions involved in the process.