Category: Group VA and VIA Elements

A. Nitrogen
B. Phosphorus
C. Carbon
D. Bismuth

A. 260°C
B. 360°C
C. 630°C
D. 620°C

A. Electronic conviguration of valence shell electrons
B. Show allotropy
C. Polymeric
D. Show same oxidation state

A. 1
B. 3
C. zero
D. 2

A. White
B. black
C. red
D. Violet

A. Phosphine
B. Phosphorus
C. Water
D. Phosphorus pentoxide

A. Reaction is exothermic
B. It is insoluble in water
C. Dilute acid is produced
D. All of above

A. Lead pencils
B. Abrasive
C. Lubricant
D. Electrode of electrolytic cell

A. White
B. Red
C. Black
D. Violet

A. ZnS
B. PbS
C. HgS
D. FeS