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IGCSE物理真题

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  大家在考试前都会找相关题目做,下面就给大家整理一点相关题目,让大家练习一下。

1、Some students are asked to describe differences between gases and liquids. 

      Three of their suggestions are:  

1、gas molecules are further apart; 
2、gas molecules are smaller;  
3、liquid molecules vibrate around fixed positions.  
Which suggestions are correct? 
 
A 1 only    B 2 only
C 3 only   D 1, 2 and 3  
 
2、The compound ethyl mercaptan, C2H5SH, has a very unpleasant smell.  
      What is its relative molecular mass? 
     
A 34  B 50  C 61 D 62  
 
3、When it is used as a fuel, hydrogen combines with substance X.What is X?
 
A carbon   B methane  C nitrogen  D oxygen  
 
4、Which process is endothermic?  
 
A adding water to anhydrous copper(II) sulphate  B burning magnesium to make the oxide 
 
C heating water to make steam   D neutralising acidic industrial waste  
 
5、An aqueous solution contains either aluminium sulphate or zinc sulphate.  
   Which aqueous reagent can be used to confirm which salt is present? 
 
A ammonia  B barium  chloride  C sodium  hydroxide  D sulphuric  acid 
 
6、Which property do all metals have?  
 
A They are hard.  
B They conduct electricity. 
C They form acidic oxides. 
D They react with water. 
 
7、Haematite is reduced to iron in the blast furnace.  
    haematite + carbon monoxide →iron + X What is X?
 
  A carbon   B carbon dioxide  C hydrogen  D oxygen  
 
8、Which object is least likely to contain aluminium?  
A a bicycle frame B a hammer C a saucepan D an aeroplane body  
 
9、Which two gases produced from the burning of petrol in motor vehicles contribute to the formation  of acid rain?  
 
A carbon dioxide and carbon monoxide   B carbon monoxide and sulphur dioxide 
C carbon monoxide and nitrogen dioxide  D nitrogen dioxide and sulphur dioxide  
 
10、What is formed when calcium carbonate is heated?  
 
A calcium and carbon 
B calcium and carbon dioxide 
C calcium oxide and carbon 
D calcium oxide and carbon dioxide 
 
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