Question

Short answer questions 2X3 = 6]

(i) What is the pasteurization of milk?

(ii) What is contact force? Name two contact forces.

(iii) Write the use of non – meta like Oxygen and Chlorine.


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Answer 1

Answer:

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Explanation:

i. Pasteurised milk is raw milk that has been heated to a specified temperature and time to kill pathogens that may be found in raw milk. Pathogens are microorganism such as bacteria that make us sick......By law , all milk sold to the public must be pasteurized and packaged in a licensed diary plant.

ii. Contact force : A contact force os any force that requires contact to occur.

Examples of contact force: 1.Reaction force

2. Tension force.

iii. It is also used gor manufacturing of steel and provides hig temperature in metal fabrication process. Oxygen cylinders are used in hospitals . Chlorine is useful in removing stains and colour patches as a bleaching agent..... Adding chlorine to drinking water killd the bacterias.

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