Chemistry - Single MCQs (Page 59)

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Q581. The formula of Plaster of Paris is?...Q582. Polythene is industrially prepared by the polymerisation of?...Q583. The metallic constituents of hard water are?...Q584. The oxide of Nitrogen used in medicine as anaesthetic is?...Q585. Which of the following is commonly called a polyamide ?...Q586. In an atomic nucleus, neutrons and protons are held together by?...Q587. Which one of the following is used in preparing match sticks?...Q588. Which one of the following is present in the emission from “unleaded petrol”...Q589. Which one of the following is a major constituent of Biogas ?...Q590. Which one of the following materials is suitable for water purification?...