A. Lead pencils
B. Abrasive
C. Lubricant
D. Electrode of electrolytic cell
Related Mcqs:
- Carbon,Diamond and Graphite are together called:___________?
A. Allotrope
B. Isomers
C. Isomorphs
D. IsotopesSubmitted by: Fahad Mehsud
- When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound ?
A. Bromine
B. Chlorine
C. Fluorine
D. Iodine - Which of the following is different with respect to physical appearance ?
A. Arsenic
B. Phosphorus
C. Antimony
D. Bismuth - Which of the following will give phosphoric acid one reaction with water_________________?
A. PCI5
B. P2O3
C. P2O5
D. All of the above - The most electronegative element among the following is_________________?
A. Sb
B. N
C. As
D. P - 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 compounds usually smells like garlic ?
A. P2O3
B. P2O5
C. H3PO3
D. All have same smell - Which of the following will have very high rate of reaction ?
A. Double decomposition reaction
B. Neutralization reaction
C. Ionic reactions
D. all of above - Which one of following amino acid is neither acidic nor a basic in nature ?
A. Lysine
B. Histidine
C. Proline
D. Glutamic acid