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प्रश्न
Which of the following groups contains all synthetic substances?
विकल्प
Nylon, Terylene, Wool
Cotton, Polycot, Rayon
PVC, Polythene, Bakelite
Acrylic, Silk, Wool
उत्तर
PVC, Polythene, Bakelite
Explanation-
PVC, polythene and bakelite are synthetic substances.
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संबंधित प्रश्न
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