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polyester
cotton
nylon
terylene
The first thermionic valve was invented by
The focal length of convex lens is
The force of gravitation between two bodies not depend on
The Freezing Point of Fresh water is -
The fruit of cultivated banana is
The fuel used in an atomic reactor is
The functional unit of the nervous system is the
The fundamental particles that composed on atom are
The gas commonly used in anaesthesia is
The gas predominantly responsible for global warming is