To solve the problem, we need to identify the color of anhydrous copper sulfate (\( \text{CuSO}_4 \)).
1. Understanding Anhydrous Copper Sulfate:
Anhydrous copper sulfate, \( \text{CuSO}_4 \), is a white, crystalline solid. It is the dry form of copper sulfate and does not contain any water molecules in its structure.
2. Hydrated Copper Sulfate:
On the other hand, hydrated copper sulfate, \( \text{CuSO}_4 \cdot 5\text{H}_2\text{O} \), is blue in color due to the water molecules associated with the copper ions.
3. Conclusion:
The color of anhydrous copper sulfate is white.
Final Answer:
The correct answer is (A) White.
Given below are two statements regarding conformations of n-butane. Choose the correct option. 
Consider a weak base \(B\) of \(pK_b = 5.699\). \(x\) mL of \(0.02\) M HCl and \(y\) mL of \(0.02\) M weak base \(B\) are mixed to make \(100\) mL of a buffer of pH \(=9\) at \(25^\circ\text{C}\). The values of \(x\) and \(y\) respectively are