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Q.

How many of following statements are correct. (Give answer in numerical)
1) A specific part of the universe under constant observation is called system
2) In open system only energy is exchanged but not Matter
3) In closed system only energy is exchanged but not Matter 
4) Surrounding = Universe + system
5) In isolated system both energy and Matter are exchanged with surroundings

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answer is 2.

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Detailed Solution

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In open system both energy and matter are exchanged with surroundings

Universe = system + surroundings

 In isolated system neither energy nor matter are exchanged with surroundings

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