Question : Which of the following is used in pencils?
A. Phosphorous
B. Charcoal
C. Silicon
D. Graphite
Question Listed : Graphite, Elements, Metals,
Question : Which of the following is used as a moderator in nuclear reactor?
A. Ordinary water
B. Radium
C. Graphite
D. Thorium
Question Listed : Graphite, Nuclear Science,
Question : Which of the following is used as a lubricant?
A. Diamond
B. Iron Oxide
C. Silica
D. Graphite
Question Listed : Graphite, Elements, Metals,
Question : Among the various allotropes of carbon
A. diamond is the hardest, lamp black is the softest
B. diamond is the hardest, graphite is the softest
C. diamond is the hardest, coke is the softest
D. coke is the hardest, graphite is the softest
Question Listed : Diamond, Graphite, Elements, Metals,