What is ethylene oxcide used for? soaking of instruments
steam autoclave
cold sterilization
gas autoclave​

Ethylene oxide,  also known as C2H4O, is commonly used for sterilizing things, particularly medical equipment. Cold sterilization is a form of sterilization, so, "cold sterilization" is correct.

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a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

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