Q. 3. State True/ False:1. Generally, non-metals react with acids, F2.

1.	Q. 3. State True/ False:1. Generally, non-metals react with acids, F2. Copper displaces zinc from zinc sulphate solution. F3. CNG is more polluting fuel than petrol.4. If the amplitude of vibration is large, sound is feeble.5. The lower the frequency of vibration, the higher is the pitch.
Answer» 3. FALSE 4. true 5. false

Q. 3. State True/ False:1. Generally, non-metals react with acids, F2. Copper displaces zinc from zinc sulphate solution. F3. CNG is more polluting fuel than petrol.4. If the amplitude of vibration is large, sound is feeble.5. The lower the frequency of vibration, the higher is the pitch.

Answer»

3. FALSE

4. true

5. false

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Q. 3. State True/ False:1. Generally, non-metals react with acids, F2. Copper displaces zinc from zinc sulphate solution. F3. CNG is more polluting fuel than petrol.4. If the amplitude of vibration is large, sound is feeble.5. The lower the frequency of vibration, the higher is the pitch.​

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Q. 3. State True/ False:1. Generally, non-metals react with acids, F2. Copper displaces zinc from zinc sulphate solution. F3. CNG is more polluting fuel than petrol.4. If the amplitude of vibration is large, sound is feeble.5. The lower the frequency of vibration, the higher is the pitch.