7.The major product(s) in the following reaction is (are) Br CH CH2 CH CH OH OCH

Question

7.The major product(s) in the following reaction is (are) Br CH CH2 CH CH OH OCH CH3 CH CH2 CH, CH,CH2 OCH3 [A] Only I [B] Only [C] A racemic mixture of[1] and [11] [D] None ofthese S. Which of the following represents the order of solvents in increasing polarity from left to right A) methanol, acetone, ethyl acetate, hexanes B) hexanes, ethyl acetate, acetone, methanol C) acetone, hexanes, methanol, ethyl acetate D) ethyl acetate, methanol, hexanes, acetone 9. In Thin Layer Chromatography (TLC) R, stands for A) Rate factor B) Refractive Index C Retardation factor None of the above 10. Which of the following statements is(are) true? A) If a polar compound moves too slowly in a non-polar solvent, switching to a more polar solvent will cause the compound to move faster B) If a non polar compound moves too fast on a TLC plate switching to a less polar solvent will cause the compound to move slower Q The polarity of at sstem can be varied by mixing two solvents together D) All of the above 11. An experiment resulted in the generation of is mostly chloroform CHCl. The correct method of disposal of this waste is to: approximately 30 mL of organic waste, which A) Carefully pour it down the sink and subsequently flush with cold water B) Allow it to sit for a while in the fume hood for complete evaporation the material into a waste container designated for halogenated wastes. D) None of these

Explanation / Answer

7. Option B, that is only II is the correct answer, since it happens via SN2 mechanism, so methanol attacks from the opposite side of Br..

8. B is the correct option, since hexane is nonpolar solvent , where as methanol is extremely polar solvent.

10. All options are true..so option D is the correct answer..

Remaining two ,i.e 9 and 11 questions are correctly answered.

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