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1. The reaction in which the hybridisation of the underlined atom is affected is XeF4 + SbF5 → (XeF3)+ (SbF6)–, where the hybridisation of Xe changes from sp3d2 to sp3d.
2. The process that is NOT endothermic in nature is H(g) + e– → H–(g).
3. The equilibrium constant for A → P is K1 × K2, where K1 is the equilibrium constant for A → B + C and K2 is the equilibrium constant for B + C → P.
4. The component which ensures stability of the ink sample is egg white, which acts as a protective colloid.
5. The one that can exhibit highest paramagnetic behaviour among the given options is [Co(OX)2(OH2)2]–.
6. The compound that will form the precipitate with aq. AgNO3 solution most readily is the one with the most stable carbocation, which is option (2).
7. The work done when five moles of an ideal gas at 1 bar and 298 K is expanded into vacuum to double the volume is zero, as it is a free expansion against zero external pressure.
8. The metal/metals electrodeposited when a waste solution containing 0.1 M AgNO3 and 0.1 M AuCl is electrolyzed at 2 V by passing a current of 1 A for 15 minutes will be both silver and gold in proportions of their equivalent weight or atomic weight.
9. The mechanism of action of “Terfenadine” (Seldane) is to inhibit the action of histamine receptor.
10. The longest wavelength in the Balmer series of He+ is 5/36 λ.
11. The major product [B] in the given reactions is CH3CH=CHCH2CH3 (option 2).