10.2. In the Solvay process
(a) An ammoniacal brine solution is carbonated with CO₂, forming NaHCO₃ which on decomposition at 150°C produces Na₂CO₃
(b) A sodium amalgam reacts with water to produce NaOH which gives Na₂CO₃ on reacting with CO₂
(c) A brine solution is made to react with BaCO₃ to produce Na₂CO₃
(d) All of the above

When light of maximum wavelength 300 nm falls on a photoelectric emitter, photoelectrons are liberated. For another emitter however light of maximum wavelength 600 nm causes photoelectric emission. The ratio of work functions of first emitter to second emitter will be

Which one of the alkali metal can directly react with N₂ of air?

Which of the following is arranged in the order of increasing radius of ions in aqueous solution?

Which one of the alkali metal can directly react with N₂ of air?

The formula of washing soda is