State any one observation for each of the
NaOH solution is added to calcium nitrate solution.

Explanation

To answer the question regarding the observation when sodium hydroxide (NaOH) solution is added to calcium nitrate (Ca(NO3)2) solution, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants in this reaction are sodium hydroxide (NaOH) and calcium nitrate (Ca(NO3)2).

2. **Write the Chemical Reaction**:
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