In a pickle high concentration of salt is used to preserve it for long time.The micro-organism died when they came in contact with pickle. which of following reason is responsible for it ? 1)Endo-osmosis 2)Exo-osmosis 3)Electroosmosis 4)Reverse osmosis

Which of the following statements are correct ? 1.on the application of an electric direction field, the particles of lyophobic sol may move in either direction or not move at all 2. surface tension of lyophobic sols is similar to that of the dispersion medium. 3. electro-osmosis is the movement of the particles of dispersion medimum under the influence of an electric field. Select the correct answer using codes given below:

Read the given passage and answer the questions number 1 to 5 that follow: The substitution reaction of alkyl halide mainly occurs by S_N 1 and S_N 2 mechanism. Whatever mechanism alkyl halides follow for the substitution reaction to occur, the polarity of the carbon halogen bond is responsible for these substitution reactions. The rate of S_N 1 reactions are governed by the stability of carbocation whereas for S_N 2 reactions steric factor is the deciding factor. If the starting material is a chiral compound, we may end up with an inverted product or racemic mixture depending upon the type of mechanism followed by alkyl halide. Cleavage of ethers with HI also governed by steric factor and stability of carbocation, which indicates that in organic chemistry, these two major factors help us in deciding the kind of product formed 1. Predict the stereochemistry of the product formed if an optically active alkyl halide undergoes substitution reaction by S_N 1 mechanism. 2. Name the instrument used for measuring the angle by which the plane polarised light is rotated. 3. Predict the major product formed when 2-Bromopentane reacts with alcoholic KOH. 4. Give one use of CHI_3 5. Write the structures of the products formed when anisole is treated with HI.