1997 年

The following equation represents the reaction of chlorine with dilute sodium hydroxide solution at room temperature: Cl₂(g) + 2NaOH(aq) → NaCl(aq) + NaClO(aq) + H₂O(l) Which of the following statements concerning this reaction is correct ?

A. Chlorine is oxidised and sodium hydroxide is reduced. B. Chlorine is reduced and sodium hydroxide is reduced. C. Chlorine is simultaneously oxidised and reduced.

Which of the following statements concerning the compound CH₃COOCH₂CH₃ is correct ?

Questions 23 and 24 refer to the following experiment :

Which of the following set-ups should be connected to the delivery tube to collect the gaseous products formed ?

Questions 23 and 24 refer to the following experiment :

Which of the following reactions is involved in this experiment ?

Which of the following statements concerning the Haber Process is INCORRECT ?

Which of the following statements concerning food additives is correct ?

Consider the following chemical equation : O₂(g) + 4Fe(OH)₂(x) → 2Fe₂O₃(y) + 4H₂O(z) Which of the following chemical combinations is correct ?

What mass of copper is obtained when 0.40 mol of copper(II) oxide is completely reduced by carbon ? (Relative atomic masses : O = 16.0, Cu = 63.5)

An iron nail is heated with concentrated sulphuric acid. Which of the following combinations is correct ?

M is an element in the third period of the Periodic Table. M forms a sulphate which has the formula M₂(SO₄)₃. The formula of the nitrate of M is