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I. CHOOSE THE CORRECT ANSWER FOR EACH OF THE FOLLOWING QUESTIONS
1. What is the function of adding gypsum salt to the cements' raw materials during industrial
manufacture of cements? A. In order to solidify cement C. To acidify cement
B. In order to make cement become fine powder
D. To enhance impurities in cement
2. The purpose of adding salt to the animal skin in the process of tanning is used to?
A. remove unwanted flesh from the skin
C. dehydrates the skin and kills bacteria
B. loosen the outer layer of the skin
D. make the skin soft

Respuesta :

GinnyAnswer
I. CHOOSE THE CORRECT ANSWER FOR EACH OF THE FOLLOWING QUESTIONS

1. The function of adding gypsum salt to the cements' raw materials during the industrial manufacture of cements is:
- A. In order to solidify cement

2. The purpose of adding salt to the animal skin in the process of tanning is to:
- D. make the skin soft

Explanation:
1. Gypsum salt is added to the cement raw materials to regulate the setting time of cement and improve its strength. It helps in controlling the hydration of the cement mixture and prevents flash setting. This process aids in solidifying the cement by providing better workability and durability to the final product.

2. Adding salt to the animal skin during tanning helps in softening the skin by relaxing the fibers and enhancing the tanning process. It facilitates the removal of unwanted substances and prepares the skin for further treatments to make it supple and durable for various uses.

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