XII Chemistry Online Mcqs - All Chapters - Online Mcqs Test - 30
Chemistry Online Mcqs Test for class 12, Second Year, According to Karachi Board 300 Online Multiple Choice Questions
Q1. Terylene fiber s made by reaction of terephtalic acid with
Q2. A polymer obtained by mixing of hexamethelenediamine and adipic acid is called
Q4. Which, of the following thermoplastic materials?
Q5. The substances that reduce the brittleness and improve elasticity of plastics are called
Q6. Which of the following is a thermosetting plastic?
Q7. The formation of PVC from vinyl chloride is an example of
Q8. The material that increase the mechanical strength of plastics are known as
Q9. The substance added in the paints for improving the mechanical properties is
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