Two liquids X and Y boil at 380 K and 400 K respectively. Which of them is more volatile?

Two liquids X and Y boil at 110^@C and 130^@C respectively. Which one of the following has higher vapour pressure at 50^C ?

The vapour pressures fo pure liquids A and B are 450 mm Hg and 700 mm Hg respectively at 350K. If the total vapour pressure of the mixture of the two liquids at 350K is 600mm Hg, Calculate the more fractions of the two components in the solution. Also, calcuate the partial pressures of the two components in the vapour phase.

Two metals X and Y have work functions 2eV and 5eV respectively. Which metal will emit electrons, when it is irradiated with light of wavelength 400 nm and why?

Heptane and octane form an ideal solution. At 373 K, the vapour pressures of the two liquid components are 105.2 kPa and 46.8 kPa respectively. What will be the vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane?

The vapour pressure of pure liquid A and B are 450mm and 700mm of Hg respectively at 350 K. Calculate the composition of liquid mixture if total vapour pressure is 600mm of Hg also find the composition of the mixture in vapour phase.

If the work function of two metals X and Y are 4.17eV and 8.24x10^(-19) J respectively, then for which metal lesser amount of energy will be required to emit an electron?

Two poles of equal heights are standing opposite each other on either side of the road,which is 80m wide.From a point between them on the road,the angles of elevation of the top of the poles are 60^@ and 30^@ respectively.Find the height of the poles and the distances of the point from the poles.

Two spheres of same material have radii 1 m and 4m and temperature 4000K and 2000K respectively. The energy radiated per second by the first sphere is