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#10-State-Change

(Physics) > Thermal Properties of Matter

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$80\mathrm{g}\mathrm{of}\mathrm{water}\mathrm{at}30\xb0\mathrm{C}\mathrm{is}\mathrm{poured}\mathrm{on}\mathrm{a}\mathrm{large}\mathrm{of}\mathrm{ice}\mathrm{at}0\xb0\mathrm{C}.\mathrm{The}\mathrm{mass}\mathrm{of}\mathrm{ice}\mathrm{that}\mathrm{melts}\mathrm{is}$-

1. 15 g

2. 30 g

3. 50 g

4 60 g

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Heat capacity is equal to the product of:

1. mass and gas constant

2. mass and specific heat

3. latent heat and volume of water

4. mass and Avogadro number

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A piece of ice falls from a height h so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is [Latent heat of ice is 3.4x10^{5}J/Kg and g=10N/Kg]

(a) 544 km

(b) 136 km

(c) 68 km

(d) 34 km

NEET - 2016

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Steam at 100°C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the mass of water present will be (Take specific heat of water=1 cal g^{-1} °C^{-1} and latent heat of steam = 540 cal g^{-1})

(a) 24 g

(b) 31.5g

(c) 42.5 g

(d) 22.5 g

NEET - 2014

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