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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Write scientific reason. The bottom of some steel utensils used for cooking is copper. - Science and Technology 1

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प्रश्न

Write scientific reason.

The bottom of some steel utensils used for cooking is copper.

स्पष्ट करा
टीपा लिहा

उत्तर

  1. Copper is a better conductor of heat as compared to steel.
  2. Also, copper can conduct faster than steel.
  3. As a result, copper bottom gets heated faster than steel.
  4. This reduces the time for cooking as well as saves heat energy and fuel.
    Hence, the bottom of some steel utensils used for cooking is copper.
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पाठ 5: Heat - Write scientific reasons

संबंधित प्रश्‍न

1 g ice of 0℃ melts to form 1 g water at 0℃. State whether the latent heat is absorbed or given out by ice.


During transformation of liquid phase to solid phase, the latent heat is ______.


Answer the following:

Explain the role of latent heat in the change of state of a substance.


Liquid ammonia is used in ice factory for making ice from water. If water at 20°C is to be converted into 2 kg ice at 0°C, how many grams of ammonia are to be evaporated? (Given: The latent heat of vaporization of ammonia = 341 cal/g)


When a liquid is getting converted into solid, the latent heat is  ………………………………


Explain the following temperature vs time graph.


Water expands on reducing its temperature below ______°C.


What do you mean by latent heat?

What is the latent heat of vaporization of steam?

What is the name given to the energy absorbed during a phase change?


Explain the meaning of the term latent heat. State its S. I. unit.


Why water get cooled in a ‘Surahi’ in hot season?


Explain the statement; “The specific latent heat of vaporization of wafer is 2260 × 103 J/kg”.


Steam at 100°C is passed over 1000 g of ice at 0°C. After some time, 600 g of ice at 0°C is left and 450 g of water at 0°C is formed. Calculate the specific latent heat of vaporization of steam (Given: specific heat capacity of water = 4200 J/kg°C, specific latent heat of fusion of ice = 336,000 J/kg.)


Find the odd one out and give its explanation.


1 kg of dry air at a temperature of 40 °C can hold a maximum of 49 g of water vapour.


600 g of copper at 50°C is mixed with lOOOg water at 20°C. Find the final temperature of the mixture. The specific heat capacity of copper is 0.4 Jg-1°C-1 and that of water is 4.2 Jg-1°C-1


Calculate the total amount of heat energy required to melt 200 g of ice at 0°C to water at 100°C. (Specific latent heat of ice = 336 Jg-1, specific heat capacity of water = 4.2 Jg-1 °C-1)


20 g of ice at 0°C absorbs 10,920 J of heat energy to melt and change to water at 50°C. Calculate the specific latent heat of fusion of ice. Specific heat capacity of water is 4200 J kg-1 K-1.


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