Mention how e-waste is produced and disposed off. Write the solution for its treatment.

What are e-wastes? Name any two e-wastes . What is best solution for treatment of e-wastes?

Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction with: iron(II) solution

Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction with : (a) iodide (b) iron (II) solution, and (c) H_2S .

Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with (i) iron(II) ions Write the ionic equations for the reactions

Mention the product and its use produced by each of the microbes listed below: Streptococcus Lacobacillus Saccharomyces cerevisiae

Name the e.m.waves,which are produced during radioactive decay of a nucleus. Write their frequency range.

An element X shows two valencies i.e. 2 and 4. Write the formula of its oxides.

What is the best solution for the treatment of electronic wastes?