General Knowledge - General Science - Discussion
Discussion Forum : General Science - Elements and Metals (Q.No. 4)
4.
Which of the following is used in pencils?
Discussion:
121 comments Page 5 of 13.
V.s.shabarish said:
1 decade ago
As we all know carbon is a black element and the graphite is the softest allotropes of carbon. If you try. To break a pencil you will find the middle black part (graphite).
Easily breaks it makes impression on light surface it imparts carbon to the surface of paper therefore graphite is used in pencil.
Easily breaks it makes impression on light surface it imparts carbon to the surface of paper therefore graphite is used in pencil.
Neha said:
1 decade ago
Graphite is the allotropes of carbon. It is black and soft.
Gaurav Wankhade said:
1 decade ago
Pencil manufacturing. The top sequence shows the old method that required pieces of graphite to be cut to size; the lower sequence is the new, current method using rods of graphite and clay.
Jaspal dudi said:
1 decade ago
We write by the pencil on paper then pencil slide on paper than we write any sentence. It mains we need a sliding metal. Graphite is a sliding metal. So graphite is use in pencil.
Chith said:
1 decade ago
Graphite slides easily on any surface and has a loose carbon structure, so as for it being used in pencils, pencil lead has to be smooth and slide across the paper to write properly. Also, graphite is naturally a very dark grey, almost black colour. The same as pencil lead. Note: Just because we call pencil lead 'lead', it does not literally mean that it is made of lead; that's impossible.
Muhammad bello said:
1 decade ago
Soft graphite is use to make pencil lead.
Srinivas said:
1 decade ago
Graphite is the allotropes of carbon. It is black and soft.
M.mouna said:
1 decade ago
Graphite is slippery in nature and also pencil impurities also slippery in nature, so we are using this graphite in pencil.
Rajendra kushawah said:
1 decade ago
Graphite is soft material, it is easily Sharp, graphite is semiconductor.
Ramkrishna said:
1 decade ago
In old days our ancestors used a type of stone (graphite) to write with and by the help of it they could write anywhere easily. In nowadays it is modalised in the pencil.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers