Subject :NSO Class : Class 4
Subject :NSO Class : Class 4
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 7
The given figure shows the mechanism of breathing through lungs. From the following statements, select the statement that is incorrect with respect to the mechanism of inhaling.
(A) The breast bone moves forward.
(B) The diaphragm flattens.
(C) The ribs move downward and outwards.
(D) The ribs move upward and outwards.
my answer is 'd', is it correct?
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 3
Ans 1: (Master Answer)
Class : Class 1
Containers P & Q have hot water, R has cold water and S has ice.
To show that water expands when heated - When water in the container Q is heated, it also heats up the water inside the conical flasks in Q. The water in conical flask thus expands and a rise in the level can be seen in the calibrated tube attached to the funnel (Image Q).
To show that water contracts when cooled - When water in container S is cooled, it contracts. Due to contraction the water in conical flask thus shows a fall in the level of water in the calibrated tube attached to the funnel. (Image S)
So, the right answer is Option B.
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 8