Which of the following is not a use of silicon ?

Related Mcqs:

1. In network of silica (SiO2) each silicon atom is surrounded by _____________ atoms of osygen?

   A. 4
   B. 2
   C. 1
   D. 6

2. Silicon differ from silica by a group of__________________?

   A. Ch3
   B. OH
   C. OCH3
   D. O2

3. When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound ?

   A. Bromine
   B. Chlorine
   C. Fluorine
   D. Iodine

4. Which of the following does not give Borax bead test ?

   A. Cu
   B. Cr
   C. Ni
   D. A1

5. Which of the following will decompose to produce litharge_________________?

   A. Pb2O
   B. Pb3O4
   C. PbO2
   D. All of the above

6. Which of the following is metasilicic acid ?

   A. H2SnO3
   B. H2SiO3
   C. H3AsO4
   D. H3SbO4

7. Which of the following shows inert pair effect ?

   A. boron
   B. carbon
   C. silicon
   D. tin

8. Which one of the following is not a semiconductor ?

   A. Si
   B. Ge
   C. Se
   D. Sn

9. Which one of the following has the maximum number of isotopes ?

   A. oxygen
   B. carbon
   C. tin
   D. chlorine

10. Which of the following is used as water disinfectant to avoid the formation of toxic compounds_________________?

    A. Cl2
    B. O3
    C. ClO2
    D. both B & C