U Tupuell pressureQUESTIONS AND ANSWERS:Q:1Q:2Out of dry and wet air which is heavier?Why does ice not deposits in the freezer of a refrigerator equipped with defrostingtechnique. Explain it..Q:3What is dry ice? How is it prepared?Q:4Carbon dioxide which is a gas under normal condition of temperature and pressure canbe liquefied by compressing it to 70 at at ordinary temperatures. What happen whenpressure is suddenly released?Ordinary water boils at 100°C. Can it be made to boil at 95°C or 105°C ?Q:5Q: 6The flame under a whistling cooker is suddenly put off. The whistle is then removed torelease the steam and the lid is forcibly opened. You see water still boiling in the cookereven when no flame is underneath it. Explain why?Q: 7Two cubes of ice are pressed hard between the palms, when the pressure is released, thetwo cubes join together. Explain.Q: 8Explain how is it possible to skate on ice without leaving trail behind?​