Subject :NSO     Class : Class 6 
                                                                            Subject :NSO     Class : Class 5 
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Subject :NSO     Class : Class 6 
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Subject :NSO     Class : Class 8 
                                                                            Nitika, a class 8 student performed a few experiments
to study the reactivity of metals. She summarised her
observations in the given table.
 
Identify W, X, Y and Z.
| W | X | Y | Z | |
| A | Sodium | Iron | Copper | Lead | 
| B | Aluminium | Iron | Gold | Potassium | 
| C | Calcium | Magnesium | Aluminium | Copper | 
| D | Magnesium | Calcium | Zinc | Silver | 
answer has to be Aonly sodium and potassium react with cold water
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Subject :NSO     Class : Class 5 
                                                                            Ans 1:
Class : Class 5 
                                                                                                        
                                                                                                        we use clay pots because they do not absorb water so beaker 1 will have most water. while making sandcastles we put water in soli because sand absorbs water the most, thus leading to the fact that in beaker 3 least water will be there. thus, i think that the correct answer is A
                                                                                                    
                                                                                                    Ans 3:
Class : Class 5 
                                                                                                        
                                                                                                        answer should be a as clayey soil absorbs most of the water . sandy soil does not absorb any water as there are very big particles
                                                                                                    
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Subject :NSO     Class : Class 3 
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Subject :NSO     Class : Class 3 
                                                                            Ans 7:
Class : Class 4 
                                                                                                        
                                                                                                        See a square has 4 corners a line is runing in between the square and the rest goes like right edge of the square and goes to top edge of the square.Hence the answer is option B
                                                                                                    
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Subject :NSO     Class : Class 5 
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Subject :NSO     Class : Class 9 
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Subject :NSO     Class : Class 9 
                                                                             
             
             
         
                                                                         
 
  
 
 
 
 
 
 
 
 
 
