Which one is not the use of silicones________________________?

Related Mcqs:

1. Water absorber used in combustion analysis is___________________?

   A. 50% KOH
   B. Lime water
   C. CaCl2
   D. Mg (CIO4)2

2. Which specie has unpaired electrons in antibonding molecular orbitals_______________?

   A. O2+2
   B. N2-2
   C. B2
   D. O2-2

3. Which is carnalite________________?

   A. KCI
   B. NaCI
   C. KCI MgCl2 6H2O
   D. Na2CO3. 10H2O

4. Which one does not give borax bead test_________________?

   A. Copper sulphate
   B. Barium sulphate
   C. Cobalt sulphate
   D. Nickel sulphate

5. Quantum number values for 3p orbitals are____________________?

   A. n=3 l=2
   B. n=3 l=0
   C. n=3 l=1
   D. n=3 l=3

6. Which of the following is not a fatty acid ?

   A. Propanoic acid
   B. Acetic acid
   C. Phthalic acid
   D. Butanoic acid

7. A safe and more reliable method for drying the crystal is__________________?

   A. Hot air currents
   B. folds of filter paper
   C. oven
   D. Vacuum desiccator

8. For which system does the equilibrium constant Kc has unit of (concentration)-1__________________?

   A. N2+3H2 2NH3
   B. H2+I2 2HI
   C. 2NO2 N2H4
   D. PCI5 PCI3+CI2

9. Chemical composition of cinnabar is____________________?

   A. FeS2
   B. HgS
   C. PbS
   D. ZnS

10. The process of fermentation involves all the enzymes except__________________?

    A. Diastase
    B. Invertase
    C. Zymase
    D. Sucrase