KVPY Government Jobs Exams

Among the following, the species that is both tetrahedral and diamagnetic is –
(A) [NiCl4]2– (B) [Ni(CN)4]2– (C) Ni(CO)4 (D) [Ni(H2O)6]

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KVPY Other Question

The ΔH for vaporization of a liquid is 20 kJ/mol. Assuming ideal behaviour, the change in internal energy for the
vaporization of 1 mol of the liquid at 60°C and 1 bar is close to –
(A) 13.2 kJ/mol (B) 17.2 kJ/mol (C) 19.5 kJ/mol (D) 20.0 kJ/mol Three moles of an ideal gas expands reversibly under isothermal condition form 2 L to 20 L at 300 K. The amount
of heat-change (in kJ/mol) in the process is –
(A) 0 (B) 7.2 (C) 10.2 (D) 17.2