1.

A student adds 2 ml of acetic acid to a test-tube containing 2 ml of distilled water. He then shakes the test-tube well and leaves it to settle for some time. After about 5 minutes he observes that in the test tube there is : (A) A clear transparent colourless solution (B) A clear transparent pink solution (C) A precipitate settling at the bottom of the test tube (D) A layer of water over the layer of acetic acid.

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