Which among the following is a false statement?

Question

Which among the following is a false statement? (A) SiO2 has a structure similar to that of CO2 (B) Natural Si exists only in the combined state (C) Si can be prepared by reducing SiO2 with Mg (D) Si does not exist in graphite-like structure, but exists only in diamond like structure

Tardigrade Admin · Accepted Answer

SiO2 has three-dimensional network of Si-O bonds; whilst carbon dioxide consists of discrete CO2 molecules . SiO2 is solid, whereas CO2 is a gas. B. Because of its great affinity for oxygen, Si always occurs as the oxide, silica (.SiO2.) or in the form of silicates, which are the compounds of SiO2 with other metal oxides. C. SiO2+2Mg arrow Si+2MgO D. the reluctance of silicon to form pπ -pπ bonds to itself is clearly shown by the fact that silicon does not exists in graphite-like structure, but only in diamond like structure.

Q. Which among the following is a false statement?

$S i O_{2}$ has a structure similar to that of $C O_{2}$

Natural Si exists only in the combined state

Si can be prepared by reducing $S i O_{2}$ with Mg

Si does not exist in graphite-like structure, but exists only in diamond like structure

Q. Which among the following is a false statement?

SiO2​ has a structure similar to that of CO2​

Natural Si exists only in the combined state

Si can be prepared by reducing SiO2​ with Mg

Si does not exist in graphite-like structure, but exists only in diamond like structure

$S i O_{2}$ has a structure similar to that of $C O_{2}$

Si can be prepared by reducing $S i O_{2}$ with Mg