2002 年

化學 · 共 37 題 · 點擊選項即時核對答案

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31.

In which of the following is ammonia used?

(1)the manufacture of nitric acid

(2)the making of fertilizers

(3)the making of antiacids

32.

In which of the following processes will carbon dioxide be produced?

(1)the fermentation of glucose solution

(2)the biodegradation of animal faeces

(3)the treatment of car exhaust in a catalytic converter

33.

Both ethene and ethyne are gaseous hydrocarbons. Their structures are shown below:

Which of the following statements concerning ethene and ethyne are correct?

(1)Both are unsaturated hydrocarbons.

(2)Both are insoluble in water.

(3)Ethyne burns with a more sooty flame than ethene.

34.

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
Combustion of diamond gives carbon dioxide.	Diamond is a crystalline form of carbon.

35.

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
During electrolysis, oxidation takes place at the cathode.	Cations accept electrons and are discharged at the cathode.

36.

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 basicity of methanoic acid is different from that of ethanoic acid.	The number of hydrogen atoms in a molecule of methanoic acid is different from that in a molecule of ethanoic acid.

37.

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
When iodine sublimes, it absorbs energy.	Energy is required to overcome the attractive force between iodine molecules.