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Name the law on which the principle of mixture is based. - Physics

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प्रश्न

Name the law on which the principle of mixture is based.

एक पंक्ति में उत्तर

उत्तर

This principle is based on law of conservation of energy.

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 11: Calorimetry - Exercise 11 (A) 1 [पृष्ठ २७०]

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सेलिना Physics [English] Class 10 ICSE
अध्याय 11 Calorimetry
Exercise 11 (A) 1 | Q 21. (b) | पृष्ठ २७०

संबंधित प्रश्न

(a) Calculate the heat capacity of a copper vessel of mass 150g if the specific heat capacity of copper is `410 J kg^-1 K^-1`
(b) How much heat energy will be required to increase the temperature of the vessel in part (a) from 25°C to 35°C?


0.5 kg of lemon squash at 30° C is placed in a refrigerator which can remove heat at an average rate of 30 J s−1. How long will it take to cool the lemon squash to 5°C? Specific heat capacity of squash = 4200 J g−1K−1.


The melting point of naphthalene, a crystalline solid is 80℃ and the room temperature is 30℃. A sample of liquid naphthalene at 100℃ is cooled down to the room temperature. Draw a temperature time graph to represent this cooling.


A bucket contains 8 kg of water at 250 C. 2 kg of water at 800 C is poured into it. Neglecting the heat energy absorbed by the bucket, calculate the final temperature of water.

What is a calorimeter? Why is it made of copper? Give two reasons.

Fill in the following blank using suitable word:

Evaporation causes ..........


Why do doctors advise to put a strip of wet cloth on the forehead of a person having high fever (temperature)?


200 g of hot water at 80°C is added to 300 g of cold water at 10 °C. Calculate the final temperature of the mixture of water. Consider the heat taken by the container to be negligible. [specific heat capacity of water is 4200 J kg-1 °C-1]


20 g of ice at 0°C is added to 200g of water at 20°C. Calculate the drop in temperature ignoring the heat capacity of the container. (Specific latent heat of ice = 80 cal/g)


Name the material used for making a Calorimeter.


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