Question

21. Consider the statements with respect to Nanotechnology –
1. Nanoparticles have the size in the range of 10^-3 – 10^-6 meter.
2. Nano silver is anti-microbial agent but can result in soil contamination.
Choose the correct option

• A. Only 1
• B. Only 2
• C. Both 1 and 2
• D. None of the above

Answer 1

The correct option is B Only 2

1. Nanometer = 10(-9) meter, so particles are of this range
2. Friends of the Earth has also claimed that silver nanoparticles have a toxic effect on different kinds of living cells.
3. Nano silver: antimicrobial agent, but dangerous to soil contamination.