Download App

Green Chemistry and Nanochemistry — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryGreen Chemistry and Nanochemistry3 Marks
Question
How nanotechnology plays an important role in water purification techniques?
✓

Answer

  1. Water purification is an important issue as 1.1 billion people do not have access to improved water supply. Water contains water bom pathogens like viruses, bacteria.
  2. Silver nanoparticles are highly effective bacterial disinfectant to remove E. Coli from water. Hence, filter materials coated with silver nanoparticles is used to clean water.
  3. Silver nanoparticles (AgNps) is a cost effective alternative technology (for e.g. water purifier).

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following in brief." from Green Chemistry and Nanochemistry→Green Chemistry and Nanochemistry — all question types→Chemistry STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Write the general electronic configuration of lanthanoids. Why are most of the compounds of transition metals coloured?
→
What is the action of the following on ethyl bromide:
(i) Alcoholic solution of potassium hydroxide
(ii) Moist silver oxide
(iii) Silver acetate?
→
Give the structures of the following compounds:
(1) 2-Methylpropanal
(2) Pentan-3-one
(3) Methanal
→
A conductivity cell filled with $0.02 M AgNO _3$ gives at $25^{\circ} C$ resistance of $947$ ohms. If the cell constant is $2.3 cm ^{-1}$, what is the molar conductivity of $0.02 M AgNO _3$ at $25^{\circ} C ?$
→
Derive the expression for molar mass of solute in terms of boiling point elevation of solvent.
→
For a zero-order reaction, molecularity can never be equal to zero. Explain.
→
Cu crystallizes in fee unit cell with edge length of 495 pm. What is the radius of Cu atom ?
→
An organic compound gives hydrogen on reaction with sodium metal. It forms an aldehyde having molecular formula $C_2H_4O$ on oxidation with pyridinium chlorochromate. Name the compounds and give equations of these reactions.
→
Define instantaneous rate of reaction. Explain pseudo first order reaction with suitable example.
→
pH of a weak monobasic acid is 3.2 in its 0.02 M solution. Calculate its dissociation constant.
→