Manganese forms non-stoichiometric oxides having the general formula `MnO_(x)`. The value of x for the compound that analyzed 64% Mn. (At wt Mn=55)

An element X forms two oxides. Formula of the first oxide is XO_(2) . The first contains 50% of oxygen. If the second oxide contains 60% oxygen, the formula of the second oxide is

An organic compound 'X' with a molecular formula C_2 H_6 O undergoes oxidation with alkaline KMnO_4 and forms the compound 'Y', that has molecular formula C_2 H_4 O_2 .Identify "X" and "Y".

An organic compound 'X' with a molecular formula C_2 H_6 O undergoes oxidation with alkaline KMnO_4 and forms the compound 'Y', that has molecular formula C_2 H_4 O_2 : Write your observation regarding the product when compound 'X' is made to react with compound "Y" Which is used as a preservative for pickles.

An organic compound X with a molecular formula C_2 H_6 O undergoes oxidation with in presence of alkaline KMnO_4 to form a compound Y. X on heating in presence of con. H_2 SO_4 at 443 k gives Z. Which on reaction with Br_2 and decolorizes, it. Identify X, Y and Z write the reactions involved.

An organic compound (P) has carbon = 40%, hydrogen = 6.6%. Its vapour density is 90. It forms penta acyl derivatives. Though it gives positive Fehling's test and positive Tollen's test it does not have - CHO group. Compound (P) on oxidation gives two hydroxy acids (Q) and (R ). (Q) is a dihydroxy dicarboxylic acid with formula C_(4)H_(6)O_(6) while (R ) is a monocarboxylic acid with formula C_(2)H_(4)O_(3) . The compound (P) on methylation followed by oxidation gives another carboxylic acid C_(8)H_(14)O_(7) . (S) containing three methoxy groups The compound (Q) is

An organic compound (P) has carbon = 40%, hydrogen = 6.6%. Its vapour density is 90. It forms penta acyl derivatives. Though it gives positive Fehling's test and positive Tollen's test it does not have - CHO group. Compound (P) on oxidation gives two hydroxy acids (Q) and (R ). (Q) is a dihydroxy dicarboxylic acid with formula C_(4)H_(6)O_(6) while (R ) is a monocarboxylic acid with formula C_(2)H_(4)O_(3) . The compound (P) on methylation followed by oxidation gives another carboxylic acid C_(8)H_(14)O_(7) . (S) containing three methoxy groups The compound (S) is

An organic compound (P) has carbon = 40%, hydrogen = 6.6%. Its vapour density is 90. It forms penta acyl derivatives. Though it gives positive Fehling's test and positive Tollen's test it does not have - CHO group. Compound (P) on oxidation gives two hydroxy acids (Q) and (R ). (Q) is a dihydroxy dicarboxylic acid with formula C_(4)H_(6)O_(6) while (R ) is a monocarboxylic acid with formula C_(2)H_(4)O_(3) . The compound (P) on methylation followed by oxidation gives another carboxylic acid C_(8)H_(14)O_(7) . (S) containing three methoxy groups The carbohydrate (P) is

MnO_2 is the most important oxide of manganese. MnO_2 occurs naturally as the black coloured mineral pyrolusite. It is an oxidising agent, and decomposes to Mn_3O_4 on heating to 530^(0) C. It is used in the preparation of potassium permanaga-nate and in the production of Cl_2 gas. Over half a million tonnes per year of MnO_2 is used in dry batteries When MnO_2 is fused with KOH in the presence of air, the product formed is :