Physics
A vacuum cleaner works on the principle of pressure difference. On the moon it will

Work with increased efficiency
Work with reduced efficiency
Work as efficiently as on the earth
Not work at all

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Physics
Which of the following occurred first ?

Wright Brothers successfully flew an aircraft
Max Planck unveiled the Quantum Theory
Guglielmo Marconi sent out the first wireless signals
Albert Einstein propounded the General Theory of Relativity

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