मराठी

State, with Reason, Which of the Two, Boiling Water Or Steam Both at 100oc Will Produce More Severe Burns.

Advertisements
Advertisements

प्रश्न

State, with reason, which of the two, boiling water or steam both at 100°C will produce more severe burns.

एका वाक्यात उत्तर
Advertisements

उत्तर

Steam at 100°C will produce more severe burns because every gram of steam gives out 2260 J of heat energy while condensing. This much amount of heat is additional to the heat contained in one gram of boiling water.

 
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Heat - Exercise 4 [पृष्ठ २४८]

APPEARS IN

फ्रँक Physics Part 2 [English] Class 10 ICSE
पाठ 5 Heat
Exercise 4 | Q 1 | पृष्ठ २४८

संबंधित प्रश्‍न

A child running a temperature of 101°F is given an antipyrin (i.e. a medicine that lowers fever) which causes an increase in the rate of evaporation of sweat from his body. If the fever is brought down to 98 °F in 20 min, what is the average rate of extra evaporation caused, by the drug? Assume the evaporation mechanism to be the only way by which heat is lost. The mass of the child is 30 kg. The specific heat of human body is approximately the same as that of water, and latent heat of evaporation of water at that temperature is about 580 cal g–1.


Calculate the mass of ice needed to cool 150 g of water contained in a calorimeter of mass 50 g at 32 °C such that the final temperature is 5 °C. Specific heat capacity of calorimeter = 0.4 J g-1 °C-1, Specific heat capacity of water = 4.2 J g-1°C-1, latent heat capacity of ice = 330 J g-1.


Name three fossil fuels that emit carbon dioxide into the atmosphere ?


What is the unit of heat capacity in CGS system?


Fill in the following blank using suitable word:
 SI unit of heat is .........


Write two advantages of high specific heat capacity of water.


Conductors have generally high specific heat capacities and insulators have low specific heat capacities.


Match the following

1. Specific heat capacity a. Dewar bottle
2. Calorimeter b. Lavoisier and Simon
3. Vacuum flask c. J Kg-1 K-1
4. Ice – calorimeter d. Heat capacity

What is the amount of heat required to raise the temperature of 5 kg of iron from 30°C to 130°C? Specific heat capacity of iron = 483 Jkg-1C-1.


Which of the following substances (A, B and C) has the highest specific heat? 

 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×