Test # 150
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PMP Certification
Quiz Index
1500 questions in 150 tests. Each test contains 10 questions.
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150
Idiom of the Day
in pursuit of (something)
chasing after something
The young man has been in pursuit of his dream of becoming a doctor for a long time.
Word of the Day
Science Experiments Ideas
Jet of flame
Light a candle, let it burn for a while, and blow it out again. White smoke rises from the wick. If you hold a burning match in the smoke, a jet of flame shoots down to the wick, and it re lights.After the flame is blown out the stearin is still so hot that it continues to evaporate and produce a vapour. But as this is combustible, it can be re lighted at once by a naked flame. The experiment shows that solid substances first become gaseous at the surface before they will burn in a supply of oxygen.
