## Question

### Solution

Correct option is

0.13

Let the mass of steam condensed be m kg. The latent of vaporisation of water = 556 K cal/kg. Therefore, heat lost by steam = 556 m + m (100 – 80) = 576 m kcal. Heat gained by calorimeter and water = (1.1 + 0.02)(80 – 15) = 72.8 kcal. Now, heat lost = heat gained, i.e.

576 m = 72.8

or                          m = 0.13 kg

#### SIMILAR QUESTIONS

Q1

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Q2

A metallic container is completely filled with a liquid. The coefficient of linear expansion of the metal is per oC and the coefficient of cubical expansion of the liquid is per oC. On heating the vessel,

Q3

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Q4

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Q5

A thin metal square plate has length l. When it is heated from 0oC to 100oC, its length increases by 1%. What is the percentage increase in the area of the plate?

Q6

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Q7

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Q8

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Q9

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Q10

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