Question

CAN U TELL WHAT IS THE LIGHTEST SOLID IN THE WORLD

A-AEROGEL
B-AQUA REGIA
C-ALUMINIUM
D-NONE OF THESE​

Answer 1

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A) Aerogel

✒ because It was developed in a lab at Zhejiang University in China and it is so light it can be placed on a delicate flower and not even cause any deformation.

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