मराठी
सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

Give reason of Ice floats on water.

Advertisements
Advertisements

प्रश्न

Give reason of Ice floats on water.

एका वाक्यात उत्तर
Advertisements

उत्तर

Ice has a low density as compared to water. Water has a maximum density at 4°C. That is why ice floats on water.

shaalaa.com
Anomalous Expansion of Water
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Water - Exercise I [पृष्ठ १०७]

APPEARS IN

सेलिना Concise Chemistry [English] Class 8 ICSE
पाठ 8 Water
Exercise I | Q 6.4 | पृष्ठ १०७

संबंधित प्रश्‍न

What is the role of the anomalous behaviour of water in preserving aquatic life in regions of cold climate?


On a winter day the temperature of the tap water is 20°C whereas the room temperature is 5°C. Water is stored in a tank of capacity 0.5 m3 for household use. If it were possible to use the heat liberated by the water to lift a 10 kg mass vertically, how high can it be lifted as the water comes to the room temperature? Take g = 10 m s−2.


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?


A deep pond of water has its top layer frozen. What will be the likely temperature of water layer at the bottom of the pond?


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.


On a faulty thermometer, a lower fixed point is marked at 10°C and upper fixed point is marked as 130°C. What will be the reading on this thermometer when it is placed in a liquid which is actually at 40°C?

Give reasons for the following:

Even when the water in the lakes is frozen, fish can survive.


How will you demonstrate thermal expansion in liquids? Describe an experiment.

Write the name.

The instrument used to study anomalous behaviour of water.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×