Physics
What is the full form of "RADAR" ?

Radio Detecting and Ranging
Radio Device and Ranging
Radio Detect and Rangs
Region Device and Ranging

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Physics
Which of the following is not a property of heavy water ?

Freezing point of heavy water is higher than that of ordinary water
Density of heavy water is higher than that of ordinary water
Boiling point of heavy water is lower than that or ordinary water
It produces corrosion

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