What is the name of the gas used in an air conditioner?

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The theory of Expanding Universe was first propounded by____________?

A. Einstein B. Newton C. Gahleo D. Hubble...

The earth’s ___________ is divided into 15 major plates of various sizes

A. Mesosphere B. Stratosphere C. Lithosphere D. None...

When water is filled in a bottle and is allowed to freeze, the bottle breaks because

A. Water expands on freezing B. Bottle contracts at freezing point C. temperature outside the bottle is less than that inside the bottle. D. None of the above...

Wind always blows from area of ________?

A. Low pressure to high pressure B. High pressure to low pressure C. Only low pressure D. Only high pressure...

Charge carriers in a metal are electrons rather than protons because electrons are?

A.Smaller B.Negative C. Loosely bound D.All of the above...