Question

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

Answer 1

Explanation:

always leave it here is more heavier than dry air because where there contain many water vapour in which that's why