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Which one of the following would raise t...

Which one of the following would raise the temperature of 20 g of water at `30^(@)C` most when mixed with?
(Specific heat of water is `1cal//g-.^(@)C`)

A

20 gm of water ate `40^(@)C`

B

40 gm of water at `35^(@)C`

C

10 gm of water at `50^(@)C`

D

4 gm of waer of `80^(@)C`

Text Solution

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PHYSICS GALAXY - ASHISH ARORA-HEAT AND THERMAL EXPANSION-NUMERICAL MCQs SINGLE OPTIONS CORRECT
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  2. A thin copper wire of length l increases in length by 1% when heated f...

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  3. Which one of the following would raise the temperature of 20 g of wate...

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  4. The lower and upper fixed points of faulty thermometer are 5^(@) and 9...

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  5. A constant volume gas thermopmeter shows pressure reading of 50cm and...

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  6. The temperature of a body on Kelvin scale is found to be x K . When it...

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  7. A 1-L flask contains some mercury. It is found that at different tempe...

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  8. The readings of a thermometer at 0^(@)C and 100^(@)C are 50 cm and 75 ...

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  9. A wire of cross sectional ara A at temmperature T is held taut with ne...

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  10. A drilling machine of power P watts is used to drill a hole in copper ...

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  11. A 2 kg copper block is heated to 500^@C and then it is placed on a lar...

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  12. 5 gm of steam at 100^(@)C is passed into six gm of ice at 0^(@)C. If t...

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  13. A water fall is 84 m high. Assuming that half the kinetic energy of fa...

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  14. The density of a liquid of coefficient of cubical expansion gamma is r...

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  15. A glass flask of volume 1000 cm^(3) is completely filled with mercury ...

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  16. The density of water at 20^(@)"C is 998 kg/m"^(3) and at 40^(@)"C 992 ...

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  17. When x grams of steam at 100^(@)C is mixed with y grams of ice at 0^(@...

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  18. Heat required to convert 1 g of ice at 0^(@)C into steam at 100 ^(@)C ...

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  19. A piece of metal floats on mercury. The coefficients of volume expansi...

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  20. Heat required to melt 1 g of ice is 80 cal. A man metls 60 g of ice by...

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