Sarthak took two test tubes, A and B containing pale green solutions and blue respectively. Respective solutions taken in A and B are

Options

A. `ZnSO_4`solution, `CuSO_4`solution
B. `CuSO_4`solution, `FeSO_4`solution
C. `Al_2(SO_4)_2`solution, `FeSO_4`solution
D. `FeSO_4`solution, `CuSO_4`solution

Answer

To solve the question regarding the solutions in test tubes A and B, we can follow these steps:

### Step 1: Identify the Color of the Solutions
- Test tube A contains a pale green solution.
- Test tube B contains a blue solution.

### Step 2: Determine the Chemical Species
- The pale green color in solution is typically associated with ferrous ions (Fe²⁺). This indicates that the solution in test tube A is likely ferrous sulfate (FeSO₄).
- The blue color in solution is commonly associated with copper(II) ions (Cu²⁺). This suggests that the solution in test tube B is likely copper(II) sulfate (CuSO₄).

### Step 3: Conclude the Respective Solutions
- Therefore, the respective solutions in the test tubes are:
- Test tube A: Ferrous sulfate (FeSO₄)
- Test tube B: Copper(II) sulfate (CuSO₄)

### Final Answer
- The respective solutions taken in A and B are:
- A: Ferrous sulfate (FeSO₄)
- B: Copper(II) sulfate (CuSO₄)

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