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Write the boiling point and freezing point of mercury.
What is heat equation?
Write the relation between heat gain or loss by a body with its surface area.
If three liquids A, B, and C having equal masses are taken in three same-sized beakers and exposed in sunlight. After 10 minutes the increased temperature in each is given in the table:
Liquid | Increased Temperature
A | 10 oC
B | 8 oC
C | 6 oC
i) Which liquid has the highest specific heat capacity? Why?
ii) If all three liquids are heated to the same temperature and put in the same beakers separately. Which one cools down faster? Why?
Prove that heat loss or gain by an object is equal to the product of mass of object, specific heat capacity and change in temperature.
Differentiate: Clinical Thermometer and Laboratory Thermometer
During the winter, animals sit into curl, why?
Mention two reasons for using nichrome wire in electric heaters.
Alcohol thermometer can measure the temperature on an ice but cannot measure the boiling point of water. Why?
Which statement defines heat?
The heat capacity of a substance depends on which of the following?
What is the effect of the high specific heat capacity of water?
Which one of the following is the best way to insert a wide pipe into a narrower pipe?
What are the lower fixed points of the thermometer in Celsius, Fahrenheit, and Kelvin scales respectively?
Differentiate: Thermal energy and Heat
Differentiate: Heat and Temperature
Differentiate: the lower fixed point and the upper fixed point of a thermometer
An iron bar heats up when it is hammered continuously for some time.
Tea in an open teacup stops cooling after some time, why?
Water pipes crack in cold places in the winter, why?
To cool the car's engine, water is kept in its radiator.
The hot water bag is used to give hot pressure to the parts of a body, why?
There is no significant difference in temperature between the daytime and the nighttime in the coastal areas.
Temperature differs a lot between the day and night in the desert, why?
In the perception of a certain man, a bucket of lukewarm contains more thermal energy than a large tank of cold water. Correct this understanding based on the definitions of thermal energy and temperature.
Touching a cup of hot tea feels hot but touching an ice cube feels cool. Explain it based on the motion of their molecules.
If the lid of a glass bottle does not open, how may it be opened using your knowledge of the effects of heat? Explain based on the kinetic energy of molecules.
Once in winter, while drinking the water from a steel jug on the table Samir felt the water to be warmer towards the bottom. Justify his experience based on scientific facts.
What are the differences between the process of freezing ghee and honey in terms of their volume and density?
Of the two ice cubes of identical shape, one is kept in an aluminum box and the other in a wooden box. Which ice cube melts faster? Explain in terms of the melting process.
What is specific heat capacity? Write its SI unit.
Write any two applications of specific heat capacity.
Describe the condition in which water can be boiled at a temperature less than 100oC.
Write the types of thermometers used in daily life. Also, mention their working principles.
What is thermometer calibration? Describe the method.
Calculate the amount of heat required to raise the temperature of 500 g of water from 15oC to 85oC.
The specific heat capacity of iron is 460 J/kg. Calculate the heat released by an iron sphere of mass 5kg while cooling it from 430oC to 30oC.
If 2kg of paraffin needs 4200J of heat to increase its temperature through 10oC, calculate the amount of heat required to increase the temperature of 4kg of paraffin from 20oC to 40oC.
If a substance of mass 500g needs 7938 J of heat to increase its temperature from 100oC to 226oC, calculate its specific heat capacity.
A bucket contains 16kg of water at 25oC. Calculate the temperature of the mixture formed when 4 kg of water at 80oC is mixed with it. (Here, the heat lost to the surroundings is neglected)
What relation exists between specific heat capacity and change in temperature?
Define heat on the basis of kinetic theory of molecules.
On which factor does quantity of heat depend?
What is the effect on the molecules of matter when the temperature is varied?
What is a thermometric liquid?
On which principle is a thermometer based?
Write the advantages of the mercury thermometer.
Write the disadvantages of the mercury thermometer.
Write down the advantages and disadvantages of the mercury thermometer.
At which point of the graph does water have highest density?
Why is water used to cool hot engines of vehicles?
Which fundamental units of following represents the proper relation for joule?
What will be the average kinetic energy of the molecules on the basis of given diagram?
Which thermometric liquid is used in a laboratory thermometer?
In the given graph, some substances and their specific heat capacities are shown in J/kg$\rm ^{\circ}$C. Calculate the change in temperature of 1kg mass of substance C when heated by equal amount of heat required to raise the temperature of 1kg mass of substance B from 10 °C to 50 °C.
Define specific heat capacity. What is its unit? Write any two effects of heat.
If you are determining upper fixed point of a newly constructed thermometer, how do you set the apparatus for it?
The temperature of 600 g of certain metal is 100 $\rm ^\circ$C and it is placed in 1.5 litre water at 15 $\rm ^\circ$C. If both of them gain the temperature of 20 $\rm ^\circ$C. Calculate the specific heat capacity of the metal?
Specific heat capacity of water, alcohol, sand and mercury are 4200 J/kg$^\circ$C, 2400 J/kg$^\circ$C, 800 J/kg$^\circ$C and 138 J/kg$^\circ$C respectively. If all of them have same mass and temperature, and are kept for 2 hours in the sun, which of them will have high temperature?
To find the upper fixed point of new thermometer, four students did the following activities. Who can find the correct upper fixed point?
| Student A | Student B | Student C | Student D |
| The bulb of thermometer was immersed in water | The bulb of thermometer was just touched with water | The bulb of thermometer was kept close to the cork | The bulb of thermometer was kept just above the water |
Specific heat capacity of substances Q, R, and S are 140 J/Kg$^{\circ}$C, 800 J/Kg$^{\circ}$C and 4200 J/Kg$^{\circ}$C respectively, which of them can be used for, the following purposes?
- To fill in the bulb of thermometer
- To reduce body temperature of patient of fever
Write the boiling point and freezing point of mercury.
What is heat equation?
Write the relation between heat gain or loss by a body with its surface area.
If three liquids A, B, and C having equal masses are taken in three same-sized beakers and exposed in sunlight. After 10 minutes the increased temperature in each is given in the table:
Liquid | Increased Temperature
A | 10 oC
B | 8 oC
C | 6 oC
i) Which liquid has the highest specific heat capacity? Why?
ii) If all three liquids are heated to the same temperature and put in the same beakers separately. Which one cools down faster? Why?
Prove that heat loss or gain by an object is equal to the product of mass of object, specific heat capacity and change in temperature.
Differentiate: Clinical Thermometer and Laboratory Thermometer
During the winter, animals sit into curl, why?
Mention two reasons for using nichrome wire in electric heaters.
Alcohol thermometer can measure the temperature on an ice but cannot measure the boiling point of water. Why?
Which statement defines heat?
The heat capacity of a substance depends on which of the following?
What is the effect of the high specific heat capacity of water?
Which one of the following is the best way to insert a wide pipe into a narrower pipe?
What are the lower fixed points of the thermometer in Celsius, Fahrenheit, and Kelvin scales respectively?
Differentiate: Thermal energy and Heat
Differentiate: Heat and Temperature
Differentiate: the lower fixed point and the upper fixed point of a thermometer
An iron bar heats up when it is hammered continuously for some time.
Tea in an open teacup stops cooling after some time, why?
Water pipes crack in cold places in the winter, why?
To cool the car's engine, water is kept in its radiator.
The hot water bag is used to give hot pressure to the parts of a body, why?
There is no significant difference in temperature between the daytime and the nighttime in the coastal areas.
Temperature differs a lot between the day and night in the desert, why?
In the perception of a certain man, a bucket of lukewarm contains more thermal energy than a large tank of cold water. Correct this understanding based on the definitions of thermal energy and temperature.
Touching a cup of hot tea feels hot but touching an ice cube feels cool. Explain it based on the motion of their molecules.
If the lid of a glass bottle does not open, how may it be opened using your knowledge of the effects of heat? Explain based on the kinetic energy of molecules.
Once in winter, while drinking the water from a steel jug on the table Samir felt the water to be warmer towards the bottom. Justify his experience based on scientific facts.
What are the differences between the process of freezing ghee and honey in terms of their volume and density?
Of the two ice cubes of identical shape, one is kept in an aluminum box and the other in a wooden box. Which ice cube melts faster? Explain in terms of the melting process.
What is specific heat capacity? Write its SI unit.
Write any two applications of specific heat capacity.
Describe the condition in which water can be boiled at a temperature less than 100oC.
Write the types of thermometers used in daily life. Also, mention their working principles.
What is thermometer calibration? Describe the method.
Calculate the amount of heat required to raise the temperature of 500 g of water from 15oC to 85oC.
The specific heat capacity of iron is 460 J/kg. Calculate the heat released by an iron sphere of mass 5kg while cooling it from 430oC to 30oC.
If 2kg of paraffin needs 4200J of heat to increase its temperature through 10oC, calculate the amount of heat required to increase the temperature of 4kg of paraffin from 20oC to 40oC.
If a substance of mass 500g needs 7938 J of heat to increase its temperature from 100oC to 226oC, calculate its specific heat capacity.
A bucket contains 16kg of water at 25oC. Calculate the temperature of the mixture formed when 4 kg of water at 80oC is mixed with it. (Here, the heat lost to the surroundings is neglected)
What relation exists between specific heat capacity and change in temperature?
Define heat on the basis of kinetic theory of molecules.
On which factor does quantity of heat depend?
What is the effect on the molecules of matter when the temperature is varied?
What is a thermometric liquid?
On which principle is a thermometer based?
Write the advantages of the mercury thermometer.
Write the disadvantages of the mercury thermometer.
Write down the advantages and disadvantages of the mercury thermometer.
At which point of the graph does water have highest density?
Why is water used to cool hot engines of vehicles?
Which fundamental units of following represents the proper relation for joule?
What will be the average kinetic energy of the molecules on the basis of given diagram?
Which thermometric liquid is used in a laboratory thermometer?
In the given graph, some substances and their specific heat capacities are shown in J/kg$\rm ^{\circ}$C. Calculate the change in temperature of 1kg mass of substance C when heated by equal amount of heat required to raise the temperature of 1kg mass of substance B from 10 °C to 50 °C.
Define specific heat capacity. What is its unit? Write any two effects of heat.
If you are determining upper fixed point of a newly constructed thermometer, how do you set the apparatus for it?
The temperature of 600 g of certain metal is 100 $\rm ^\circ$C and it is placed in 1.5 litre water at 15 $\rm ^\circ$C. If both of them gain the temperature of 20 $\rm ^\circ$C. Calculate the specific heat capacity of the metal?
Specific heat capacity of water, alcohol, sand and mercury are 4200 J/kg$^\circ$C, 2400 J/kg$^\circ$C, 800 J/kg$^\circ$C and 138 J/kg$^\circ$C respectively. If all of them have same mass and temperature, and are kept for 2 hours in the sun, which of them will have high temperature?
To find the upper fixed point of new thermometer, four students did the following activities. Who can find the correct upper fixed point?
| Student A | Student B | Student C | Student D |
| The bulb of thermometer was immersed in water | The bulb of thermometer was just touched with water | The bulb of thermometer was kept close to the cork | The bulb of thermometer was kept just above the water |
Specific heat capacity of substances Q, R, and S are 140 J/Kg$^{\circ}$C, 800 J/Kg$^{\circ}$C and 4200 J/Kg$^{\circ}$C respectively, which of them can be used for, the following purposes?
- To fill in the bulb of thermometer
- To reduce body temperature of patient of fever