Match List – I with List – II                                                                                               (Chemical Bonding)

List – I                                          List – II

(A)  [PtCl₄]^2-                                 (I)   sp³d

(B)  BrF₅                                       (II)  d²sp³

(C)  PCl₅                                        (III) dsp²

(D)  [Co(NH₃)₆]³⁺                         (iv) sp³d²

Choose the most appropriate answer from the options given below :

The standard enthalpy of combustion at 25°C of hydrogen, cyclohexene (C₆H₁₀) and cyclohexane (C₆H₁₂) are –241, –3800 and –3920 kJ mol–1 respectively. Calculate the standard enthalpy of hydrogenation of cyclohexene.

HCP crystal is made of A ions and B ions are arranged in 2/3rd of octahedral voids. The simplest formula of compound is :-

Enthalpy of neutralisation of CH₃COOH by NaOH is – 50.6 kJ/mol and the heat of neutralisation of a strong acid with NaOH is – 55.9 kJ/mol. The value of ΔH for the ionisation of CH₃COOH is :

Kindly Consider following table–

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Which of the following is a carbonate ore ?