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Subject :NSO    Class : Class 7

Jayesh placed 3 potted plants in an airtight glass tank as shown in the given diagram.

If he placed the set-up in a dark cupboard for a few hours, what would happen to the limewater, after a few hours?

AIt would turn dark blue.
BThere would be slightly less limewater left.
CIt would turn milky.
DThere would be no change.

It is an airtight glass tank,how can plants respire when there is no oxygen inside.

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

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