More Questions on This Topic :
- in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time
- due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil
- in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere
- in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving very little heat for cooking
Answer: Option A
Question 4. On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
- mercury is a metal.
- density of mercury is greater than that of water.
- cohesion of mercury is greater than its adhesion with glass.
- cohesion of water is greater than its adhesion with glass.
Answer: Option C