Day 72: CBSE Class 10 Science

1. A.
   1 and 5
2. B.
   7 and 6
3. C.
   7 and 4
4. D.
   1 and 6

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1. A.
   acidic $\rightarrow$ basic $\rightarrow$ basic
2. B.
   basic $\rightarrow$ acidic $\rightarrow$ acidic
3. C.
   acidic $\rightarrow$ basic $\rightarrow$ acidic
4. D.
   basic $\rightarrow$ acidic $\rightarrow$ basic

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1. A.
   is endothermic and pH of the solution formed is more than 7.
2. B.
   is exothermic and pH of the solution formed is 7.
3. C.
   is endothermic and pH of the solution formed is 7.
4. D.
   is exothermic and pH of the solution formed is more than 7.

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