Which of the following liquids has the highest surface tension?
A. Soapy water B. Cold water C. Hot water D. oily water Correct Answer: Option D = oily water
Which of the following materials does not serve as a safety device in electrical circuits?
A. Connecting wires B. Earth wire C. Fuse D. Switch Correct Answer: Option A – Connecting wires
Which of the following thermometers is used to measure the temperature of the human body?
A. Thermocouple B. Alcohol-in-glass thermometer C. Gas thermometer D. Platinum resistance thermometer Correct Answer: Option D – Platinum resistance thermometer
The anomalous expansion of water occurs in the range
A. 0 °C to 100 °C B. 0 °C to 4 °C C. 4 °C to 100 C D. -4 °C to 0 °C Correct Answer: Option B = 0 °C to 4 °C
Which property of a wave remains constant when the wave travels from one medium into another?
A. Amplitude B. Wavelength C. Velocity D. Frequency Correct Answer: Option A – AmplitudeProducts
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