SINDH MDCAT 2019 Mdcat 2019 ( PART 5) 1. Paramagnetic elements contain: Few unpaired electrons All paired electrons All unpaired electrons Unequal electrons and protons 2. How many atmospheres correspond to 1050 Torr? 1.050 1.380 10.38 2.760 3. The mass of an electron is: 0.00055 amu 0.5500 amu 1.009 amu 1.008 amu 4. The rate of EI reaction depends upon: The amount of the solvent used The concentration of nucleophile and substrate The concentration of nucleophile The concentration of substrate 5. The number of bonds in nitrogen molecules are: One sigma two pi Two sigma and one pi One sigma and one pi Three sigma only 6. An ionic compound A^+ B^- is most likely to be formed when: The ionization energy of A is high and electron affinity of B is low The ionization energy of A is low and electron affinity of B is high Both ionization energy of A and electron affinity of B are equal Both ionization energy of A and electron affinity of B are high 7. The electrophile in aromatic sulphonation is: SO3H^+ H2SO4 SO3 HSO 8. Choose the correct IUPAC name for the following complex. Trichlorotetra amine chromium (III) Dichlorotetra amine chromium (III) chloride Dichlorotetra amine chromate (III) chloride Dichlorotetra-ammonia chromium (III) chloride 9. SN2 reactions can be best carried out with: Secondary alkyl halides Tertiary alkyl halides Both primary and tertiary alkyl halides Primary alkyl halides 10. Name the main product formed in result of the following reaction. Benzene Toluene Cyclohexane Xylene Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
