Which of the following is commonly called a polyamide ?
Which of the following is commonly called a polyamide ?
A. Rayon
B. Nylon
C. Terylene
D. Orion
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Study of life in outer space is known as ?A. Endobiology
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The gas usually filled in the electric bulb is___________?A. Nitrogen
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A. Galileo
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Dr. James Watson discovered the structure of DNA in __________?A. 1953
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