Who invented the battery?

A. Nicolas Carznot

B. Alessandro Volta

C. Michael Faraday

D. George Bessel

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Which energy is changed by a loudspeaker into sound energy.

A. Chemical

B. Electrical

C. Light

D. Kinetic

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According to NASA on which planet purple rocks are found?

A. Jupitar

B. Mars

C. Earth

D. Neptune

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Mercury is ________ at room temperature?

A. Solid

B. Gaseous

C. Liquid

D. Plasma

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