化學 2001 年 DSE、CE 選擇題（第 4 頁）

31.

Which of the following statements concerning the reaction of iron(II) carbonate with 1M sulphuric acid is/are correct ?

(1)Sulphuric acid acts as an acid.

(2)Sulphuric acid acts as an oxidizing agent.

(3)Sulphuric acid acts as a dehydrating agent.

32.

Consider the information listed below:

(1)helium: van der Waals' forces

(2)diamond: covalent bond

(3)magnesium oxide: ionic bond

Which of the following combination are correct ?

33.

In which of the following experiments would a metal be produced ?

(1)heating silver oxide

(2)heating iron pyrite

(3)heating a mixture of lead(II) oxide and carbon powder

34.

Which of the following statements concerning oil spillage on the sea are correct?

(1)Petroleum is toxic to marine lives.

(2)Petroleum can block the oxygen supply to marine lives.

(3)Petroleum can cause the outbreak of fire on the sea.

35.

Which of the following ions have the same number of electrons as neon atom ?

(1)Mg²⁺

(2)O²⁻

(3)Cl⁻

36.

Which of the following are correct descriptions of the uses of sulphuric acid ?

(1)treatment of metal surfaces in the electroplating industry

(2)manufacture of paint additives

(3)manufacture of fertilizers

37.

Consider the set-up shown below:

Which of the following statements are correct ?

(1)The solution around electrode X turns brown.

(2)The mass of electrode X remains unchanged.

(3)Reduction occurs at electrode Y.

38.

For each of the following questions, decide whether each of the two statements is true or false. If both are true, decide whether the second correctly explains the first.

A.Both statements are true and the 2nd statement is a correct explanation of the 1st statement.

B.Both statements are true but the 2nd statement is NOT a correct explanation of the 1st statement.

C.The 1st statement is false but the 2nd statement is true.

D.Both statements are false.

1st statement	2nd statement
Lithium is the most reactive element in Group I of the Periodic Table.	Among the Group I elements, lithium loses electrons most readily.

39.

For each of the following questions, decide whether each of the two statements is true or false. If both are true, decide whether the second correctly explains the first.

A.Both statements are true and the 2nd statement is a correct explanation of the 1st statement.

B.Both statements are true but the 2nd statement is NOT a correct explanation of the 1st statement.

C.The 1st statement is false but the 2nd statement is true.

D.Both statements are false.

1st statement	2nd statement
The reaction of ethanoic acid with ethanol is a neutralization.	Water is one of the products formed in the reaction of ethanoic acid with ethanol.