GasesIsothermal Expansion461Choose the best answerDuring isothermal expansion of a fixed amount of an ideal gas: (1) Pressure decreases. (2) Average kinetic energy remains constant. (3) Average kinetic energy decreases. (4) Number of molecules increases.A(1) and (2)B(1), (2) and (4)C(1), (2) and (3)D(2) and (3) Like 0 Discuss 0Share
Sindh MDCAT 2020 Chemistry#Magnetic Properties#Transition Elements462Choose the best answerAmong the following 3d-series ions, which has the greatest number of unpaired electrons?ACr³⁺BTi³⁺CV³⁺DZn²⁺ Like 0 Discuss 0Share
SolidsCrystalline Solids463Choose the best answerA crystalline solid characteristically has:AA sharp melting pointBNo melting pointCA completely disordered structureDNo long-range order Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Alcohols and Phenols#Phenols464Choose the best answerQ.94 Phenol when subjected to nitration produces:Ao-nitro phenolBp-nitrophenolCo-nitro phenol & m-nitrophenolDo-nitro phenol & p-nitro phenol Like 0 Discuss 0Share
Alkyl HalidesSN1 Reaction465Choose the best answerWhich condition most strongly favors an SN₁ reaction?APrimary alkyl halide in a polar aprotic solventBMethyl halide with a strong nucleophileCTertiary alkyl halide in a polar protic solventDPrimary alkyl halide with a strong base Like 2 Discuss 0Share