Name the hydrogen donor for carbon dioxide reduction in : green /purple sulphur bacteria.

Name the hydrogen donor for carbon dioxide reduction in : green plants

Name the primary acceptor of carbon dioxide in C_4 plants. How many carbon atoms does it have?

What name is given to carbon reduction process for extracting the metal?

Name two crops produced in green houses with increase carbon dioxide concentration.

Translate the following statesments into chemical equations and then balance them. Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

An organic compound contains 69.77% carbon, 11.63% hydrogen and the rest is oxygen. The molecular mass of the compound is 86u. The compound does not reduce Tollens reagent but reacts with Brady's reagent to give yellow precipitate. On vigorous oxidation the molecule produces ethanoic acid and propanoic acid. The compound also shows iodoform test. Identify and name the compound and write the reactions.

Name the technique used to separte the mixture of Carbon monoxide and Carbon dioxide.