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Question

The brown paper test is a test for ____________________.

Biuret solution turns ____________________ when a protein is present.

Iodine turns blue-black when ____________________ is present.

Benidict's solution is used to test for ____________________.

Answer 1

I don't know why you didn't just google the questions, but here they are:

1. lipids, oils

2. violet, purple

3. starch

4. simple carbohydrates