Question

Cup greases are prepared by mixing
O petroleum oil and calcium soap
O petroleum oil and lithium soap
O petroleum oil and sodiuml soap
O petroleum oil and heavy metal hydroxide​

Answer 1

Answer:

Cup greases or calcium base greases are the emulsions of petroleum oils with calcium soap and can be prepared by adding calculated

Answer 2

Petroleum oil and calcium soap

Explanation:

• Cup-greases also Referred to as calcium based greases are the mixture of petroleum oil and calcium soaps which within saponification takes place heated above 80°C, structural breakdown occurs.
• Generally they're prepared with addition of calcium hydroxide(hydrated lime) to hot oil with continuous agitation.
• They are used most typically and are cheap.
• As they are water proof, insoluble in water. The procedure is completed  after water content adjustment.
• Water free grease can made by using castor oil fatty acid (aperient carboxylic acid)resulting zero water content.