Nanotechnology Quiz 1

What is the range for Nanomaterial?

• 1-100 nm

• 100-200nm

• 0.1 nm

• None of these

Which is example of Top-Down Approach

• Ball Milling

• Sol-gel

• Precipitation

• Hydrothermal

Which is example for Bottom-up approach?

• Sol-gel

• Hydrothermal

• Precipitation

• All of these

Surface to volume ratio for nanomaterials is

• Directly proportional to radius

• Inversely proportional to radius

• Equals to radius

• zero

The sol is a colloidal solution made of

• solid particles dispersed in a solid phase

• liquid particles dispersed in a solid phase

• liquid particles dispersed in a liquid phase

• solid particles dispersed in a liquid phase

Baffles inhibit _________ rotation

• eliptical

• horizontal

• vertical

• linear

Which balls are used in ball milling method?

• Hardened steel

• Lead

• Iron

• Silver

Which laser is prefered in Laser Ablation

• IR

• UV

• Visible spectrum

• Radio waves

If isolated by thermal evaporation , the resulting nanomaterial is termed as

• Xerogel

• Aerogel

• cryogel

• solgel

If solvent is extracted under supercritical or near supercritical conditions, the product is an

• Solgel

• Cryogel

• Xerogel

• Aerogel