Which one of the followings possesses melting point below 0°C?
A. Nitrogen B. Phosphorus C. Carbon D. Bismuth
Chemistry MCQs
The most electronegative element among the following is_________________?
A. Sb B. N C. As D. P
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
Which of the elements show passivity when treated with conc. HNO3?
A. Fe B. A C. Cr D. All of the above