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How do you prevent the underside of the test tube from turning black?
Wiki User
∙ 14y ago
Turn down the gas on your burner to reduce the yellow part of the flame. the blue flame is best for no black, called soot.
Wiki User
∙ 14y ago
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Rubin test is used to test?
A rubin test is designed to detect obstruction of the fallopian tubes, which would prevent pregnancy.. hope that helps...
In the lugols solution test what color is a positive test?
intense blue or black
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Tonic water does not affect the results of a drug test. Tonic water does not show up as a prohibited substance on a drug screening nor does it prevent the test from detecting substances.
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Request to lie down during blood test.
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test tube and me
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put students in a freaking box
Rubin test is used to test?
A rubin test is designed to detect obstruction of the fallopian tubes, which would prevent pregnancy.. hope that helps...
Can you test a diamond with a black light?
Yes, don't know what you're testing for, but yes, you can test a diamond with black light.
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There are various strategies used to prevent cheating during the test. They put some measures such as invigilator, etc. If the test is online, the checking is done by the use of web cameras which constantly examine the candidates.
