Category: Group III A and IVA Elements

A. Acidic oxide
B. Basic oxide
C. Amphoteric oxide
D. It does not exists

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

A. it combines with H2O to form carbonic acid
B. it reacts with red blood cells of haemoglobin
C. it is powerful oxidizing agent
D. it is used to prepare aerated drinks

A. Beryllium
B. Carbon
C. Silicon
D. Aluminium

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

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

A. Hall process
B. Thermite process
C. Haber process
D. Contact process

A. carbon is non-metal while silicon is semi-metal
B. CO2 is an independent molecule while SiO2 has network covalent structure
C. CO2 forms multiple bond while silicon does not form multiple bonds
D. Silicon has all sigma bonds

A. As nitrometer
B. To remove air bubbles from molten metal
C. To produce alloy
D. As insulator

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