Ceramics Quiz PDF: Questions and Answers - 139

MCQ 691: Ceramics bear the properties of

1. high melting and boiling point
2. hard
3. chemically unreactive
4. all of above

MCQ 692: Rainwater has pH in unpolluted regions of

1. 6
2. 7
3. 5.7
4. 7.5

MCQ 693: Process of forcing out nylon from nozzles in to long fibers is called

1. addition polymerization
2. substitution polymerization
3. condensation polymerization
4. cold drawing

MCQ 694: Upon hydration of Al₂Cl₆, Al⁺³ is formed, and the solution becomes

1. acidic
2. basic
3. catalyst
4. neutral (pH: 7)

MCQ 695: Methyl group which is one electron short results in formation of positively charged ion called as

1. nucleophile
2. electrophile
3. carbocation
4. anion