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An open bulb containing air at 19^(@)C ...

An open bulb containing air at `19^(@)C ` was cooled to a certain temperature at which the number of moles of the gaseous molecules increased by 25% . The final temperature is

A

`-39 .4^@ C `

B

`233.6^@ C `

C

`39.4 ^@ C`

D

`240^@ C`

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The correct Answer is:
A
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AAKASH SERIES-STATES OF MATTER-OBJECTIVE EXERCISE -2
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  2. An open vessel at 27^(@) C is heated until 2/5 th of the air in it has...

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  3. An open bulb containing air at 19^(@)C was cooled to a certain temper...

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  4. A five litre flask contains 3.5gm of N2 3g of H2 and 8g of O2 at 27^@C...

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  5. If 10 gm of a gas at atmospheric pressure is cooled from 273°C to 0°C ...

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  7. A gas occupies a volume of 300 cc at 27^@C and 620 mm pressure. The vo...

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  8. Two samples of gases 'a' and 'b' are at the same temperature. The mole...

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  10. Rate of diffusion of gases is not influenced by

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  11. Under the same conditions the rates of diffusion of two gases are in t...

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  15. At what temperature will the rate of diffusion of N(2) be 1.6 times t...

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  16. 50 ml of oxygen diffuses under certain conditions through a porous mem...

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  18. A  pre-weighed vessel was filled with oxygen at NTP and weighed. It wa...

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