1 degree Clarke = 1 part of CaCO3 per _____________ parts of water.a.10000b.70000c.50000d.30000

To answer the question, we need to understand the relationship between Clarke degree and calcium carbonate (CaCO₃) concentration in water.

Break Down the Problem

1. Determine what "degree Clarke" means in terms of concentration.
2. Identify the equivalent concentration in parts per million (ppm) which will help in selecting the correct answer from the options provided.

Relevant Concepts

• 1 degree Clarke is defined as 1 part of CaCO₃ per 70,000 parts of water.

Analysis and Detail

According to the definitions, if we have:

• 1 degree Clarke = 1 part of CaCO₃ per 70,000 parts of water.

Now we can compare this with the options given (10000, 70000, 50000, 30000).

Verify and Summarize

Since 1 degree Clarke corresponds to 70,000 parts of water, we can identify that this directly matches with option (b).

Final Answer

1 degree Clarke = 1 part of CaCO₃ per 70,000 parts of water.
Final Answer: b. 70000