Advertisements
Advertisements
Question
Give reason for Sea water does not freeze at 0°C.
Solution
Sea water contains impurities that decrease its freezing point. That is why it does not freeze at 0°C.
APPEARS IN
RELATED QUESTIONS
At what temperature is the density of water is maximum? State its value.
Explain the following
A hollow glass sphere which floats with its entire volume submerged in water at 4°C, sinks when water is heated above 4°C.
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 do vegetables and fruits get damaged during severe frost?
The following diagrams illustrate three situations involving thermometers which are labeled A, Band C. In each situation the thermometers indicate different readings.
(i) What do you expect the approximate reading of the thermometer B and C would be? Give a reason for your answer.
(ii) How would the readings of A and B help you in calibrating a thermometer?
Give reasons for the following:
Even when the water in the lakes is frozen, fish can survive.
Write scientific reason.
Fish can survive even in frozen ponds in cold regions.
Write scientific reason.
Placing a plastic bottle filled with water in the freezing compartment in the freezer can cause the bottle to explode.