Hard Water Is Caused by

question 30

Multiple Choice

Hard water is caused by

• A) Na⁺ and K⁺
• B) Ca²⁺, Mg²⁺, Fe³⁺
• C) Na⁺ and Al³⁺
• D) K⁺ and Pb²⁺

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Definitions:

Critical Performance

Essential measures of success or effectiveness in a task or job, often used to assess employees or processes for efficiency and goal achievement.

Quality

The degree of excellence or superiority that a product or service holds, often measured against standards or customer expectations.

Salmonella Contamination

The presence of Salmonella bacteria in food or water, which can cause illness when consumed.

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