Distinguish between ortho and para hydrogen Describe one method of preparation of `H_2O_2` in the laboratory.

Write one common method for the preparation of ethanal & prop-2-one.

Express the concentration of "10 Volume" H_2O_2 in terms of percentage.

Give a chemical test to distinguish between the following pairs of compounds: N-Methyl propane-2 amine and N-ethyl-N-methyl ethanamine.

Write balanced equation for SbCl_3 + H_2O .

What do you mean by 30% H_2O_2 solution?

Mention few use of : Hydrogen ( H_2 ).

Complete the following reactions: C_2H_4 + O_2 rarr

Write the oxidatin number of 'S' in H_2S_2O_7 .

Present a comparative account of the following: Bond angle of H_2O and H_2S .

Aqueous hydrogen peroxide decomposes to H_2O[l] and O_2[g] in a reaction that is of first order in H_2O_2 and has a rate constant (K) = 1.06xx10^-3 min^-1 How long it will it take 15% of a sample of H_2O_2 to decompose?