Advertisements
Advertisements
प्रश्न
उत्तर
C= `5/9` ( F - 32)
= `5/9` (212 - 32)
= 100°C
⇒ 212°F = 100°C
APPEARS IN
संबंधित प्रश्न
Explain the terms melting ?
Fig 11. 11 shows the variation in temperature with time when some wax cools from the liquid phase to the solid phase.
(i) In which part of the curve, the wax is in liquid phase?
(ii) What does the part QS of the curve represent?
(iii) In which part of the curve, the wax will be the in the liquid as well as solid phase?
(iv) In which part of the curve, the wax is in solid phase?
(i) Define Calorimetry.
(ii) Name the material used for making a Calorimeter.
(iii) Why is a Calorimeter made up of thin sheets of the above material answered in (ii).
Express -400C on the Fahrenheit scale.
Calculate the time taken by an immersion heater, which supplies energy at the rate of 7000 J/minute to raise temp. of 5 kg water from 22°C to 47°C.
Fill in the following blank using suitable word:
Whenever mechanical work is done, .......... Is produced.
Fill in the following blank using suitable word:
Evaporation causes ..........
Which requires more heat: 1 g ice at 0°C or 1 g water at 0°C to raise its temperature to 10°C? Explain your answer.
A mass of 50 g of a certain metal at 150° C is immersed in 100 g of water at 11° C. The final temperature is 20° C. Calculate the specific heat capacity of the metal. Assume that the specific heat capacity of water is 4.2 J g-1 K-1.