Question

Among the following, the compound that is both paramagnetic and coloured is

• A. \( K_2Cr_2O_7 \)
• B. \( (NH_4)_2[TiCl_6] \)
• C. \( VOSO_4 \)
• D. \( K_3Cu(CN)_4 \)

Hint:

Paramagnetic substances have unpaired electrons and are often coloured due to electronic transitions.

Answer 1

The Correct Option is C

Step 1: Paramagnetic and Colour.
\( VOSO_4 \) has an unpaired electron in the d-orbital of the vanadium ion, making it both paramagnetic and coloured.

Step 2: Conclusion.
Thus, the correct answer is option (C).

Final Answer: \[ \boxed{\text{(C) } VOSO_4} \]