JAMB Physics · Energy, pressure and heat
Change of state: JAMB Physics Past Questions and Answers
What the JAMB syllabus covers in Change of state
Our summary: Latent heat, melting, evaporation and boiling, and what changes boiling and melting points.
- Latent heat
- Specific latent heats of fusion and vaporization
- Melting, evaporation and boiling
- The influence of pressure and of dissolved substances on boiling and melting points
- Application in appliances
Objectives
- differentiate between latent heat and specific latent heats of fusion and vaporization;
- differentiate between melting, evaporation and boiling;
- examine the effects of pressure and of dissolved substance on boiling and melting points;
- solve numerical problems.
Syllabus content © The Joint Admissions and Matriculation Board (UTME).
JAMB Physics questions on Change of state
- JAMB 2025The quantity of heat required to convert 5kg of ice at its melting point to water without a change of temperature is
- JAMB 20255400kJ of heat energy was lost when some amount of steam condensed to water for drinking purposes at 15º C. What is the quantity of water collected? [L f = 2.26…
- JAMB 20245 X 10 ^ -3 kg of liquid at its boiling point is evaporated in 20s by the heat generated by a resistor of 2 when a current of 10A is used. The specific latent…
- JAMB 2024The quantity of heat required to melt ice of 0.2 kg whose specific latent heat is 3.4 x 10 ^5 J/Kg is
- JAMB 2024When thermal energy in a solid is increased, the change in state is called
- JAMB 2022The amount of energy required to change a kilogram of ice block into water without a change in temperature is?
- JAMB 2022What quantity of heat is required to convert 20 g of ice at 0 ºC to water at the same temperature? (Specific latent heat of ice = 336 Jg ^ -1 )
- JAMB 20210.5kg of water at 10ºC is completely converted to ice at 0ºC by extracting (88000) of heat from it. If the specific heat capacity of water is 4200jkg ^ 1 Cº…
- JAMB 2021I. A liquid boils when its saturated vapor pressure is equal to the external pressure II. Dissolved substances in pure water lead to an increase in the boiling…
- JAMB 2019During the transformation of matter from the solid to the liquid state, the heat supplied does not produce temperature increase because
- JAMB 2019The following are some units I. Ns II. Non III. Nm ^ -2 IV. J°K ^ -1 V. JKg ^ -1 What are the units of latent heat?
- JAMB 2019When water is boiling, it
- JAMB 2019During the transformation of matter from the solid to the liquid state, the heat supplied does not produce a temperature increase because
- JAMB 2018The process whereby a liquid turns spontaneously into vapour is called
- JAMB 2017Calculate the specific latent heat of vaporization of steam of 1.13 x 106J of heat energy is required to convert 15kg of steam to water.
- JAMB 2016Boiling occurs when the vapour pressure of a liquid is
- JAMB 2016When an athlete perspires after running, he loses heat through
- JAMB 2015Which of the following will increase the boiling point of water? I. Taking it to a high altitude II. Dissolving a salt into it III. Heating it in a sealed flask…
- JAMB 2015Volatile liquids usually
- JAMB 2014The melting point of a substance is equivalent to its
- JAMB 2013What will happen to the boiling point of pure water when it is heated in a place 30m below sea level?
- JAMB 2012Which of the following is NOT a factor that can increase the rate of evaporation of water in a lake?
- JAMB 2012The quantity of heat energy required to melt completely 1 kg of ice at - 30oC is [latent heat of fusion = 3.5 x 10 5Jkg -1, specific heat capacity of ice =…
- JAMB 2011Steam burn is more severe than that of boiling water because
- JAMB 2011The phenomenon that shows that increase in pressure lowers the melting point can be observed in
- JAMB 2010The process whereby a substance changes from a solid to liquid when heat is applied, is called?
Years with Change of state questions in DeeepSolve's question bank
From the past questions DeeepSolve holds, not a count of everything the exam body has set.
- 2025
- 2024
- 2022
- 2021
- 2019
- 2018
- 2017
- 2016
- 2015
- 2014
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- 2012
- 2011
- 2010