The latent heat of fusion of ice is -a 33-4 - 105 J - kgb 22-5 - 105 J - kgc 33-4 - 104 J - kgd 22-5 - 104 J - kg

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Standard XII

Physics

Calorimetry

The latent he...

Question

The latent heat of fusion of ice is :
(a) 33.4 × 10⁵ J/kg
(b) 22.5 × 10⁵ J/kg
(c) 33.4 × 10⁴ J/kg
(d) 22.5 × 10⁴ J/kg

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Solution

(c) 33.4 × 10⁴J/kg

This value is fixed and is found by performing the experiment in lab.

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Similar questions

Q. The latent heat of vaporisation of water is :
(a) 2.25 × 10⁶ J/kg
(b) 3.34 × 10⁶ J/kg
(c) 22.5 × 10⁴ J/kg
(d) 33.4 × 10⁵ J/kg

Why is the latent heat of fusion of ice i.e 3.34×10⁵J/kg less than the latent heat of vapourisation i.e 22.5×10⁵J/kg? Particles of solids are more tightly packed than liquids so literally the should require more energy for separation than liquids.

Q. What is meant by saying that the latent heat of fusion of ice is 3.34 × 10⁵ J/kg ?

What is meant by saying that the latent heat of vaporisation of water is 22.5 $\times 10^{5}$ J/Kg?

A lead ball at $30^{\circ} C$ is dropped from a height of $6.2 k m$ . The ball is heated due to the air resistance and it completely melts just before reaching the ground. The molten substance falls slowly on the ground. Calculate the latent heat of fusion of lead. Specific heat capacity of lead = $126 J k g^{- 1}^{\circ} C^{- 1}$ and melting point of lead = $330^{\circ} C$ . Assume that any mechanical energy lost is used to heat the ball. Use $g$ = $10 m s^{- 2}$ .

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The latent heat of fusion of ice is : (a) 33.4 × 105 J/kg (b) 22.5 × 105 J/kg (c) 33.4 × 104 J/kg (d) 22.5 × 104 J/kg

(c) 33.4 × 104J/kg This value is fixed and is found by performing the experiment in lab.

The latent heat of fusion of ice is :
(a) 33.4 × 10⁵ J/kg
(b) 22.5 × 10⁵ J/kg
(c) 33.4 × 10⁴ J/kg
(d) 22.5 × 10⁴ J/kg

(c) 33.4 × 10⁴J/kg

This value is fixed and is found by performing the experiment in lab.