Q: Many metals react with acids to produce what gas? Choices: - neon - mercury - helium - hydrogen A:
hydrogen

Q: What do we call the region on the lung root formed by the entrance of the nerves at the hilum? Choices: - renal plexus - heart plexus - brain plexus - pulmonary plexus A:
pulmonary plexus

Q: Ground subsidence is a consequences of the overuse of what? Choices: - plants - chemicals - topsoil - groundwater A:
groundwater

Q: What is the rotational equivalent of a force? Choices: - momentum - power - centripetal force - torque A:
torque