Calendar: 1887-1888 Page 714

718 CLOTHWORKERS' SCIENCE EXHIBITIONS What is meant by saying that the specific heat of water is 30 times as great as that of mercury If 10 lbs of boiling water be mixed with 18 lbs of ice-cold mercury what will be the temperature of the mixture State Boyle's law with regard to pressure of gases and describe an experiment by which it can be established for pressures less than the atmospheric pressure When the barometer stands at 30 inches how far up would mercury rise in glass cylinder 12 inches long which is lowered into the mercury till it is just covered State the arguments derived from experiment that radiant heat and light are identical Explain the relations of this theory to the phenomena observed in the Solar Spectrum VI -IFnorgatric Cfiemtetrn What weight of sulphur would be obtained by passing litres of sulphuretted hydrogen into litres of sulphur dioxide if the whole of the hydrogen became water Explain by an equation mineral body is acted upon in test-tube by strong sulphuric acid and evolves pungent acid clouds which cause deposition of silica upon wet glass rod how do you account for the silica thus produced Describe the process by which iodine is extracted from sea-weed Explain how chlorine acts as bleaching agent Will it bleach vermilion Show how sulphuric acid might be produced from sulphur oxygen and water without the intervention of nitric acid or oxides of nitrogen There are three phosphoric acids what are they called and how are they distinguished from each other How is nitric acid prepared When dilute nitric acid acts upon zinc considerable quantity of ammonium nitrate is found in the liquid account for its formation