Chemistry Test ...

Directions: Questions are based on the following paragraph.

When ammonium vanadate is heated with oxalic add solution, a compound Z is formed. A sample of Z was titrated with KMnO₄ solution in hot acidic solution. The resulting liquid was reduced with SO₂, the excess SO₂ boiled off, and the liquid again titrated with KMnO₄. The ratio of the volumes of KMnO₄ used in the two titrations was 5 : 1. KMnO₄ oxidises all oxidation state of vanadium to Vanadium (+V) and SO₂ reduces vanadium (+V) to vanadium (+IV).

Read the above experiment and answer the following questions. If vanadium exists as , reduced species by SO₂ would be

In a cubic dosed packed structure of mixed oxides, the lattice is made up of oxide ions, one eighth of tetrahedral/voids are occupied by divalent ions (A²+), while one half of the octahedral voids are occupied by trivalent ions(B³⁺)What is the formula of the oxide ?

Which of the following sequence of reaction is the best means to furnish the conversion RCH₂OH→RCH₂NH₂

The standard heat of combustion of carbon(s), sulphur (s) and carbon disulphide (l) are -393.3, -293.72 and - 1108.76 kJ/mol respectively. The standard heat of formation of carbon disulphide(l) is

The volume of 0.1 M oxalic acid that can be completely oxidised by 20 mL of 0.025 M KMnO₄ solution is

α-D(+)-glucose and β-D-(+)-glucose are

Match List I with List II and select the correct answer using the codes given below the lists:

Which one of the following is the structure of polyacrylonitrile?

In the hydrocarbon 

The state of hybrization of carbons 1,3 and 5 are in the following sequence :

If for  then the value of k_eq for the reaction  will be