Ortho boric acid is not obtained in
(A) Hydrolysis of diborane
(B) By acidifying an aqueous solution of borax
(C) Hydrolysis of boron trichloride
(D) The combustion of diborane

Aqueous solution of AlCl_(3) is acidic due to hydrolysis.

Aqueous solution of potash alum is acidic due to the hydrolysis of

A weak acid HX(K_(a) = 10^(-5)) on reaction with NaOH gives NaX . For 0.1M aqueous solution of NaX , the % hydrolysis is

An aqueous solution of hydrogen peroxide is (a)Alkaline (b)Neutral (d)Strongly Acidic (d)Weakly Acidic

An orgnic compoud with the formula C_3 H_5 N hydrolysis forms a acid which reduces Fehling solution . The compound can be :

A black coloured compound (A) on reaction with dilute H_(2)SO_(4) gives a gas (B) which on passing in a solution of an acid ( C) gives a white turbidity (D) .Gas (B) when passed in an acidified solution of a compound (E) gives a precipitate (F) soluble in dilute HNO_(3) .After boiling this solution when an excess of NH_(4)OH is added a intense blue coloured compound (G) is formed. To this solution on addition of acetic acid and aqueous K_(4)[Fe(CN)_(6)] a chocolate brown precipitate (H) is obtained.On addition of an aqueous solution of BaCl_(2) to an aqueous solution of (E) a white precipitate insoluble in dilute HCl is obtained. Identify the compounds from (A) to (H) .

During electrolysis of a concentrated aqueous solution of NaCl, what is the product at the cathode? (a) Sodium (b) Chlorine (c) Oxygen (d) Hydrogen

When BCl_(3) is treated with water, it hydrolyses and forms [B[OH]_(4)]^(-) only whereas AlCl_(3) in acidified aqueous solution forms [Al[H_(2)O]_(6)]^(3+) ion. Explain what is the hybridisation of boron and aluminium in these species ?

The electrolyte which is completely ionised in its aqueous solution is (a) ethanoic acid (b) hydrochloric acid (c) ammonium hydroxide (d) hydrogen sulphide

An organic compound (A) on treatment with ethyl alcohol gives a carboxylic acid (B) and compound ( C) . The hydrolysis of ( C) under acidic conditions gives (B) and (D) . Oxidation of (D) with KMnO_4 also gives (B) . (B) on heating with Ca(OH)_2 gives (E) (molecular formula, C_3 H_6 O ). (E) does not give Tollens test and does not reduce Fehling's solution but forms a 2,4- dinitrophenyl hydrazone. Identify (A),(B), ( C), (D) , and (E) .