Select incorrect statement: | CHEMISTRY - SOME IMPORTANT COMPOUNDS OF CARBON AND SILICON | SolveeIt

Question

Select incorrect statement:

Interstitial carbides are formed by metalloids like Si and B

SiC is called carborundum

CO and CN– both are fatal due to complex formation with Fe(III) present in blood

CO is obtained as by-product when carbon and SiO2 is used in reduction processes of phosphate rock to give phosphorus.

Answer

Interstitial carbides are formed by metalloids like Si and B

Explanation

Solution

(1) Interstitial carbides are formed by transition elements and lanthanides.

(2) SiC is a covalent carbide known by the name

carborundum.

(3) CO is toxic, because it forms a complex with

haemoglobin in the blood and this complex is more stable than oxy-haemoglobin. This prevents the haemoglobin in the red blood corpuscles from carrying oxygen round the body. This causes oxygen deficiency, leading to unconsciousness and then death.

Hb—O2 + CO $\longrightarrow$ Hb—CO + O2

(4) 2Ca3(PO4)2 + 6SiO2 + 10C $\longrightarrow$ P4 + 6CaSiO3 + 10CO.

Question: Select incorrect statement:...

Solution