Question

An elements of group 14 forms two oxides one of which is highly poisonous and neutral. Other oxide can be easily liquefied and compressed to give a solid which is used as a refrigerant under the name of drikold. The element and the oxides are.

• A. Si, SiO, $\mathrm { SiO } _ { 2 }$
• B. Pb, PbO, $\mathrm { PbO } _ { 2 }$
• C. C, CO, $\mathrm { CO } _ { 2 }$
• D. Sn , SnO, $\mathrm { SnO } _ { 2 }$

Answer 1

Answer: (C)

C, CO, $\mathrm { CO } _ { 2 }$

Answer 2

: C forms two oxides CO and $\mathrm { CO } _ { 2 }$ CO is neutral and poisonous. $\mathrm { CO } _ { 2 }$SiO is unstable. SnO and PbO are amphoteric in nature.