Q:
      
      
         
            
Select the option that correctly matches the contents of the first column with the contents of the second column.
 
| A. Elements combine in fixed ratios | I. Dalton's atomic theory | 
| B. Atoms are indivisible | II. The same number of molecules | 
| C. Sulphate and Oxalate ions are anions, whereas magnesium and | III. Law of constant proportions | 
| D. Gram atomic mass of an element and the gram molecular mass of a compound contain | IV. Ammonium ions are cations | 
 
         
       
      
         
            
               | A) A-III, B-II, C-IV, D-I | B) A-III, B-I, C-IV, D-II | 
            
               | C) A-III, B-IV, C-I, D-II | D) A-I, B-III, C-IV, D-II | 
         
       
      
         
            
               | A) A-III, B-II, C-IV, D-I | 
            
               | B) A-III, B-I, C-IV, D-II | 
            
               | C) A-III, B-IV, C-I, D-II | 
            
               | D) A-I, B-III, C-IV, D-II | 
         
       
      
          
      
      
      
      
      
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