Question

plz answer this question it is urgent ​

Answer 1

Answer:

d is the answer

Nanochemistry is being used in chemical, materials and physical, science as well as engineering, biological and medical applications. ... Nanochemistry can make the most effective contrast agent of MRI out of iron oxide (rust) which has the ability of detecting cancers and even killing them at their initial stages.

Answer 2

Answer:

(a) Option a

Hope it helps