English
Karnataka Board PUCPUC Science Class 11

Water Equivalent of a Body is Measured in - Physics

Advertisements
Advertisements

Question

Water equivalent of a body is measured in ___________ .

Options

  • kg

  • calorie

  • kelvin

  • m3

MCQ
Fill in the Blanks
Advertisements

Solution

kg

 

Since water equivalent of a body is the mass of the water having the same heat capacity as the given body, the water equivalent is measured in kilogram.

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Calorimetry - MCQ [Page 46]

APPEARS IN

RELATED QUESTIONS

The dimensions of emissive power are ______.


A metal ball cools from 64 °C to 50 °C in 10 minutes and to 42 °C in next 10 minutes. The ratio of rates of fall of temperature during the two intervals is _______.


What is the temperature of the triple-point of water on an absolute scale whose unit interval size is equal to that of the Fahrenheit scale?


If the temperature of a uniform rod is slightly increased by ∆t, its moment of inertia I about a line parallel to itself will increase by


An aluminium sphere is dipped into water at 10°C. If the temperature is increased, the force of buoyancy


When a hot liquid is mixed with a cold liquid, the temperature of the mixture ____________ .


The mechanical equivalent of heat ____________ .


The temperature of an object is observed to rise in a period. In this period

(a) heat is certainly supplied to it

(b) heat is certainly not supplied to it

(c) heat may have been supplied to it

(d) work may have been done on it


A railway track (made of iron) is laid in winter when the average temperature is 18°C. The track consists of sections of 12.0 m placed one after the other. How much gap should be left between two such sections, so that there is no compression during summer when the maximum temperature rises to 48°C? Coefficient of linear expansion of iron = 11 × 10–6 °C–1.


The densities of wood  and benzene at 0°C are 880 kg m3 and 900 kg m–3 , respectively. The coefficients of volume expansion are 1.2 × 10–3 °C–1 for wood and 1.5 × 10–3 °C–1for benzene. At what temperature will a piece of wood just sink in benzene?


A steel wire of cross-sectional area 0.5 mm2 is held between two fixed supports. If the wire is just taut at 20°C, determine the tension when the temperature falls to 0°C. Coefficient of linear expansion of steel is 1.2 × 10–5 °C–1 and its Young's modulus is 2.0 × 10–11 Nm–2.


Two identical beakers A and B contain equal volumes of two different liquids at 60°C each and is left to cool down. Liquid in A has a density of 8 × 102 kg/m3 and specific heat of 2000 J kg-1 K-1 while the liquid in B has a density of 103 kg m-3 and specific heat of 4000 J kg-1 K-1. Which of the following best describes their temperature versus time graph schematically? (assume the emissivity of both the beakers to be the same.)


An earthen pitcher loses 1 gm of water per minute due to evaporation. If the water equivalent of the pitcher is 0.5 kg and the pitcher contains 9.5 kg of water, calculate the time required for the water in a pitcher to cool to 28°C from the original temperature of 30°C. Neglect radiation effects. The latent heat of vaporization in this range of temperature is 580 Cal/gm and the specific heat of water is 1 Cal/gm°C.


Which statement about states of matter is most accurate?


What is the SI unit of heat?


According to the Zeroth Law, if A is in thermal equilibrium with B, and B with C, then:


What condition defines thermal equilibrium between two bodies?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×