English
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9

If you put one ice cube in a glass of water and another in a glass of alcohol, what would you observe? Explain your observations. - Science

Advertisements
Advertisements

Question

If you put one ice cube in a glass of water and another in a glass of alcohol, what would you observe? Explain your observations.

Short Note

Solution

Ice floats in water and not in alcohol. This is because the density of ice is `"0.917g"/"cc"` which is lower than that of water which is 1. Whereas, the density of ethanol (alcohol) is only `"0.789g"/"cc " `which is lesser than ice, hence it floats in alcohol.

shaalaa.com
Principle of Floatation (Laws of Flotation)
  Is there an error in this question or solution?
Chapter 3: Fluids - Exercise [Page 37]

APPEARS IN

Samacheer Kalvi Science [English] Class 9 TN Board
Chapter 3 Fluids
Exercise | Q IX. 3. | Page 37

RELATED QUESTIONS

A solid iron ball of mass 500 g is dropped in mercury contained in a beaker. (a) Will the ball float or sink? Give reasons. (b) What will be the apparent weight of the ball? 


Draw a diagram to show the forces acting on a body floating in water with its some part submerged. Name the forces and show their points of application. How is the weight of water displaced by the floating body related to the weight of the body itself?


A weather forecasting plastic balloon of volume 15 m3 contains hydrogen of density 0.09 kg m-3. The volume of equipment carried by the balloon is negligible compared to its own volume. The mass of an empty balloon alone is 7.15 kg. The balloon is floating in air of density of 1.3 kg m-3Calculate:

(i) The mass of hydrogen in the balloon,
(ii) The mass of hydrogen and balloon,
(iii) The total mass of hydrogen, balloon and equipment if the mass of equipment is x kg,
(iv) The mass of air displaced by balloon and
(v) The mass of equipment using the law of floatation.
 


A test tube weighing 17 gf, floats in alcohol to the level P. When the test tube is made to float in water to the level P, 3 gf of the lead shots are added in it. find the R.D. of alcohol.


Explain the following:

A hydrometer is made heavy near the bottom.


Using Archimedes' principle, describe an experiment to find the relative density of a solid denser than water.

Why does a helium balloon float in air?


State the laws of flotation.


Assertion: To float, body must displace liquid whose weight is equal to the actual weight.

Reason: The body will experience no net downward force in that case.


Why do petroleum-based products float on the surface of the water?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×