Select the odd one: A good quality laundry soap will have:

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It should be hard to touch Explanation: The qualities of laundry soap can be determined in the following ways: 1. The colour of the soap should be clear and pale. Dark-coloured soaps contain impurities. 2. It should be hard to touch. Soaps that are soft to the touch contain excessive water. Also, hardness should not be due to the presence of silicate, starch, etc. 3. When broken (not cut), the soap should appear granular (not striated) 4. On storage, white crystals should not appear on the soap surface. The formation of crystals indicates the presence of excess alkali, which may be harmful to the clothes as well as to the hands of the workers.

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