Which one of the following is the best way for preparing an emulsion ?

Mix soluble oil and water by pouring both simultaneously

Add water to the soluble oil

Add soluble oil to the water

None of the above

Answer is:

Add soluble oil to the water

Explanation:

Adding soluble oil to the water is one of the best way for preparing an emulsion.

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Answer is:

Explanation:

With high pressure jet is common method for applying cutting fluid on the tool point .

Answer is:

Explanation:

While machining cast iron, the coolant used should be Dry air.