Among the halogens the rare element is________________?

A. Fluorine
B. Chlorine
C. Astatine
D. Iodine

Vander Waals forces are stronger in_______________?

A. F2
B. Cl2
C. Br2
D. I2

The most powerful oxidizing agent among the halogens is__________________?

A. F2
B. Cl2
C. Br2
D. I2

Phosphene gas will be produced if phosphorous acid is subjected to___________________?

A. Oxidation
B. Reduction
C. Decomposition
D. Both b & c

Which one of following is not a property of pure quartz ?

A. Coloured solid
B. Brittle
C. Hard
D. All of above

Which of the following does not contain phosphorus ?

A. Yolk of egg
B. Bone
C. Nerves
D. Steel

Which one of the following is not the use of graphite ?

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

The composition of brown ring in nitrate test is_________________?

A. Feso4.no
B. Feso4.no2
C. Feso4.no3
D. Feso4.n2o

Which one of the following compounds usually smells like garlic ?

A. P2o3
B. P2o5
C. H3po3
D. All have same smell

The element of group VIA which is a non-metal is________________?

A. S
B. Se
C. Te
D. Po