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Chemistry - Extreme

This one shows no mercy. Good luck solving JEE level problems.

1. Which of the following complexes is inner orbital, diamagnetic, and obeys Sidgwick's EAN rule?

\([Fe(CN)_6]^{4-}\)
\([Fe(H_2O)_6]^{3+}\)
\([CoF_6]^{3-}\)
\([NiCl_4]^{2-}\)

2. What is the major product formed when phenol is treated with \(CHCl_3\) and aqueous \(NaOH\), followed by acidification (Reimer-Tiemann Reaction)?

Salicylaldehyde
Salicylic acid
Benzoic acid
Benzaldehyde

3. For a first-order gas phase reaction \(A(g) \rightarrow 2B(g) + C(g)\), the initial pressure is \(P_0\) and total pressure at time \(t\) is \(P_t\). What is the rate constant \(k\)?

\(k = \frac{2.303}{t} \log \frac{2P_0}{3P_0 - P_t}\)
\(k = \frac{2.303}{t} \log \frac{P_0}{2P_0 - P_t}\)
\(k = \frac{2.303}{t} \log \frac{P_0}{P_0 - P_t}\)
\(k = \frac{2.303}{t} \log \frac{3P_0}{2P_0 - P_t}\)

4. Which of the following compounds will undergo Aldol condensation when treated with dilute \(NaOH\)?

\(CH_3CHO\)
\(HCHO\)
\(C_6H_5CHO\)
\((CH_3)_3CCHO\)

5. What is the work done in reversible isothermal expansion of 1 mole of an ideal gas from volume \(V_1\) to \(V_2\) at temperature \(T\)?

\(-RT \ln \left(\frac{V_2}{V_1}\right)\)
\(-RT \left(\frac{V_2 - V_1}{V_1}\right)\)
\(RT \ln \left(\frac{V_1}{V_2}\right)\)
\(0\)