Dacron is a/an _________________?

Related Mcqs:

1. Dacron is a ___________________?

   A. Condensation product of Hexamethylene diamine and adipic acid
   B. Thermosetting material
   C. Condensation product of dimethyl terephthalate and ethylene glycol
   D. None of these

2. Dacron (or Terylene) fibres as compared to nylon fibres have__________________?

   A. Better heat & acid resistant properties
   B. Poorer resistance to alkalis
   C. Poorer dyeability
   D. All A , B. and C.

3. Extraction of _________________ employs an electrolytic process ?

   A. Aluminium
   B. Silver
   C. Copper
   D. All A, B. and C

4. Soap cannot be used with hard water, because _________________?

   A. Hard water contains sulphate
   B. They form insoluble calcium soaps which precipitate
   C. They attract back the removed dirt
   D. None of these

5. Na2CO3 is called _________________?

   A. Washing soda
   B. Soda ash
   C. Plaster of Paris
   D. Calcite

6. The most stable allotropic form of phosphorous is the _________________ phosphorous?

   A. White
   B. Black
   C. Yellow
   D. Red

7. _________________ is not a constituent of gun powder?

   A. Carbon
   B. Charcoal
   C. Sulphur
   D. Potassium nitrate

8. More than 100 percent of _________________ is present in oleum?

   A. SO3
   B. H2SO4
   C. H2SO3
   D. SO2

9. Trinitro-toluene (TNT) is _________________ ?

   A. Used in glycerine manufacture
   B. An explosive
   C. Used in dye manufacture
   D. None of these

10. Washing soda is chemically represented by _________________?

    A. Na2CO3
    B. Na2CO3.H2O
    C. Na2CO3.10H2O
    D. NaHCO3