'When carbon dioxide is bubbled into lime water, the lime water turns milky and when bubbled in excess the milkiness disappears'. Give balanced equations to support the statement.

Explain the term 'dry ice'. State its application. Give three reasons why carbon dioxide finds application in fire extinguishers.

State the function of conc. sulphuric acid in the laboratory preparation of carbon monoxide from oxalic acid.

Give reasons why carbon monoxide is considered a highly poisonous gas. State why it is dangerous

(i) To sleep in a closed room with a fuel burning

(ii) To be in the vicinity of smokers