The element of group VIA are called as ________________?
A. Halogens
B. Chalcogens
C. pnictogens
D. none of them
E. all of them
Submitted by :- Jamil Ahmed
CHEMISTRY
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Which one of the following compounds usually smells like garlic ?
The composition of brown ring in nitrate test is_________________?
Which one of the following is not the use of graphite ?
A. Lead pencils
B. Abrasive
C. Lubricant
D. Electrode of electrolytic cell
Submitted by :- Jamil Ahmed
Which of the following does not contain phosphorus ?
A. Yolk of egg
B. Bone
C. Nerves
D. Steel
Submitted by :- Jamil Ahmed
Which one of following is not a property of pure quartz ?
Phosphine gas will be produced if phosphorous acid is subjected to___________________?
A. Oxidation C. Decomposition
B. Reduction D. Both b & c
Submitted by :- Jamil Ahmed
The most electronegative element among the following is_________________?
A. Sb
B. N
C. As
D. P
Submitted by :- Jamil Ahmed
Which one of the followings possesses melting point below 0°C?
When sulphuric acid is treated with ethanol sulphuric acid behaves like________________?
A. an acid
B. a dehydrating agent
C. an oxidizing agent
D. as sulphonating agent
Submitted by :- Jamil Ahmed