Subject :NSO Class : Class 6
Subject :NSO Class : Class 7
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Subject :NSO Class : Class 10
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 6
Ans 1:
Class : Class 7
Option D is correct. This is because P and Q shows the deoxygenated blood brought by superior and inferior vena cava respectively.Being deoxygenated it will have more CO2. While R and S shows the oxygenated blood brought by pulmonary vein and carried away by aorta..So it has more oxygen.
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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 9
A boy takes 5 seconds to reach each point from A to B, B to C and C to D as shown in the diagram. If AB = BC = CD = 20 m then which of the following information is correct when the boy reaches point D from point A?
| Velocity (m s-1) | Speed (m s-1) | |
| A | 4 | 4 |
| B | 1.33 | 1.33 |
| C | 4 | 1.33 |
| D | 1.33 | 4 |
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 7