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प्रश्न
Do you want to listen to your heartbeat? Take a rubber tube as long as the distance from your shoulder to your elbow. At one end of the tube fix a funnel. Place the funnel on the left side of your chest. Put the other end of the tube to your ear. Listen carefully. Did you hear a dhak dhak sound?
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उत्तर
Yes, I heard the sound.
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संबंधित प्रश्न
Fold a piece of cloth 3-4 times. Now bring it close to your mouth and blow hard on it. Did the cloth become warm?
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For what other things do you blow air from your mouth?
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Put your finger under your nose. Can you feel any air when you breathe out from your nose?
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Can you understand from the movement of the snake - if the air is moving upwards or downwards?
