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CBSE

Chemistry

NEET Chemistry : The p-Block Elements

11.

The catenation tendency of C, Si and Ge is in the order Ge < Si < C. The bond energies (in kJ mol^-1) of C-C, Si-Si and Ge-Ge bonds, respectively are

12.

Red lead is

13.

Name the type of the structure of silicate in which one oxygen atom of [SiO₄]^4- is shared?

14.

SiO₂ is reacted with sodium carbonate. What is the gas liberated ?

15.

Pure silicon doped with phosphorus is a

16.

Which of the following compounds is carbondum?

17.

Number of oxygen atoms shared per Si $O_{4}^{4 -}$ tetrahedron in

I. two dimensional sheet structured silicates

II. cyclic silicates and

III. single strand chain silicates respectively are

18.

Dry ice is

19.

Which of the following is the electron deficient molecule?

20.

Which will liberate bromine from a solution of potassium bromide?

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