Advertisements
Advertisements
प्रश्न
Water is cooled from 4 °C to 0 °C. It will :
पर्याय
contract
expand
first contract, then expand
first expand, then contract
Advertisements
उत्तर
Water shows anomalous behavior between 0 °C and 4 °C. Hence, when it is cooled it expands.
APPEARS IN
संबंधित प्रश्न
The amount of water vapour in air is determined in terms of its ______.
Consider the situation of the previous problem. Assume that the temperature of the water at the bottom of the lake remains constant at 4°C as the ice forms on the surface (the heat required to maintain the temperature of the bottom layer may come from the bed of the lake). The depth of the lake is 1.0 m. Show that the thickness of the ice formed attains a steady state maximum value. Find this value. The thermal conductivity of water = 0.50 W m−1°C−1. Take other relevant data from the previous problem.
Explain the following
A glass bottle completely filled with water and tightly closed at room temperature is likely to burst when kept in the freezer of a refrigerator.
Explain, why are the exposed water pipes lagged with straw during severe winter?
The following figure shows a metal cylinder, containing boiling water. One half side A is polished and another half, B is painted black. Two thin metal sheets X and Y are painted black and have one rubber stopper fixed with wax on each sheet. These sheets are equidistant from the boiling water (container A, B) as shown in the diagram. What would you expect to happen after a few minutes? Give a reason for your answer.

What is the criterion of choosing the two metals for a bimetal strip?
Write scientific reason.
Fish can survive even in frozen ponds in cold regions.
