Name the site(s) of pyruvate synthesis. Also, write the chemical reaction wherein pyruvic acid dehydrogenase acts as a catalyst.

Write the balanced chemical equation for the reaction between sulphur di oxide and chlo-rine in presence of charcoal as catalyst.

Write chemical reactions to affect the following transformations: Ethanoic acid to ethanoic anhydride

Write chemical reactions to affect the following transformations: Butanal to butanoic acid

A sweet smelling organic compound (A) is slowly oxidised by air in presence of light to a highly poisonous gas on warming with silver powder, it forms a gaseous substance (B), which is also produced by the action of calcium carbide on water. Identify (A) and (B) and write the chemical equations of the reactions involved.

An organic compound (A) (molecular formula, C_4H_8O_2 ) was hydrolysed with dilute H_2SO_4 to give a carboxylic acid (B) and alcohol (C ). Oxidation of (C ) with chromic acid produced (B). Write possible structures of (A), (B) and (C ) and give their IUPAC name. Write the chemical equations involved in the process.

Write chemical reactions to affect the following transformations: Butan-1-ol to butanoic acid.

Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.