Which one of the following is the natural nanomaterial.

(a)

Peacock feather

(b)

Peacock beak

(c)

Grain of sand

(d)

Skin of the Whale

The method of making nanomaterial by assembling the atoms is called _____.

(a)

Top down approach

(b)

Bottom up approach

(c)

Cross down approach

(d)

Diagonal approach

The materials used in Robotics are _____.

(a)

Aluminium and silver

(b)

Silver and gold

(c)

Copper and gold

(d)

Steel and aluminum

The technology used for stopping the brain from processing pain is _____.

(a)

Precision medicine

(b)

Wireless brain sensor

(c)

Virtual reality

(d)

Radiology

The gravitational waves were theoretically proposed by _____.

(a)

Conrad Rontgen

(b)

Marie Curie

(c)

Albert Einstein

(d)

Edward Purcell