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General Knowledge - General Science - Discussion

@ : Home > General Knowledge > General Science > Elements and Metals - Discussion

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"Forgiveness is a virtue of the brave."
- Indira Gandhi
4. 

Which of the following is used in pencils?

[A]. Graphite[B]. Silicon
[C]. Charcoal[D]. Phosphorous

Answer: Option C

Explanation:

No answer description available for this question.


Akash Patel said: (Tue, Dec 14, 2010 08:04:54 PM)    
 
As pencil is slippery in touch and the graphite is also slippery in touch. Also pencil is black in color as graphite is.

Yashasvi said: (Mon, May 30, 2011 05:36:48 AM)    
 
People beleive that mankind in stone age used agraphite stone to write on mud so scientist even tried to do same so pencils were created.

Shanti Lal Sharma said: (Tue, Jun 14, 2011 07:34:46 PM)    
 
Graphite is used in pencil

Patel Dhaval A said: (Tue, Jun 28, 2011 08:21:37 AM)    
 
Graphite is very soft to easy sharp and very easy write on paper and its smothly removable.

Aarthi said: (Sat, Aug 13, 2011 10:09:01 PM)    
 
GRAPHITE is black colour and it is soft and sharp. It is one of carbon. So pencil writes black.

Tin said: (Mon, Aug 29, 2011 10:39:17 PM)    
 
Of couse graphite is used in making pencil leads but you know that graphite is a soft non metal and gets powdered easily in hand. So in order to make it hard its mixed with a substance. I don't exactly know the substance's name. If any one knows it please post it here as graphite is lustrous so to be used!

Khushbu Machiwal said: (Thu, Sep 15, 2011 01:20:05 PM)    
 
Because graphite is soft & smooth like a pencile.

Khushbu Machiwal said: (Thu, Sep 15, 2011 01:20:05 PM)    
 
Because graphite is soft & smooth like a pencile.

Sonam Singh said: (Sat, Sep 24, 2011 03:09:30 PM)    
 
Nib of the pencil is of graphite the main part of the pencil by which we write it's a soft non metal and easily removable as well.

Aboothar said: (Sun, Oct 16, 2011 12:59:01 PM)    
 
Graphit is a non metal.

It is a good conductor.

If a pencil point touch the electirc current.

It we give a spark & chocking smell.

Rameshori said: (Thu, Nov 3, 2011 09:42:49 PM)    
 
Graphite is soft & smooth it is non matel.

Sivachandran said: (Tue, Jan 10, 2012 04:13:31 PM)    
 
Ya graphite is good conductor as well as it is used in pencil.

Pankaj Sharma said: (Fri, Jan 13, 2012 07:06:22 PM)    
 
Graphite and diamond are the allotropes of carbon. Allotropes are those elements which have same atomic no but different masss number.

S.V. Prasad said: (Mon, Feb 6, 2012 07:29:30 AM)    
 
Yes pencil made from Graphite. Many thought that it was made by led. Because we called it as pencil lead.

Yadu said: (Wed, Apr 4, 2012 08:43:09 PM)    
 
Why charcol, silicon are not used?

Sujit said: (Thu, May 3, 2012 03:29:33 PM)    
 
It's also included carbon element.

Panda said: (Mon, May 14, 2012 09:44:46 PM)    
 
graphite is not insulator

Neelam Saxena said: (Thu, May 17, 2012 04:46:41 PM)    
 
Yes graphite is used in pencil.

Vinanthi said: (Tue, May 29, 2012 01:13:35 PM)    
 
Graphite is mixed with clay powder to make it hard. Only colour pencils contains lead not normal.

Parish Mishra said: (Sun, Jul 15, 2012 10:55:21 PM)    
 
Graphite structure is hexagonal and it is build in layer which can slip in surface so it is used for pencil.

Rupace Shah said: (Mon, Aug 27, 2012 12:32:20 PM)    
 
Its a non metal but good conductor of electricity and it is made of triple bond and three dimensonal.

Ashish said: (Fri, Aug 31, 2012 10:57:08 PM)    
 
Aside from being the material in your lead pencils, graphite is of tremendous value as an industrial material. It is used to make the brushes for electric motors and generators, and it has wide use as an electrode in a number of applications, primarily batteries.

Graphite has been, is, and will continue to be critically important to maintaining and advancing modern civilization. And this because it is in things we use every day, and because it is used in industrial processes that provide the foundation we build our society on.

Priya said: (Mon, Dec 10, 2012 03:12:01 PM)    
 
If pencil writes black due to graphite then which element is used in color pencils.

Muhammad Azam said: (Fri, Jan 18, 2013 10:10:50 PM)    
 
Lead is used because it is soft and easy to sharp.

Jay Jay said: (Tue, Feb 5, 2013 12:48:16 PM)    
 
graphite and pencil is having same features.

Arun Singh said: (Fri, Feb 22, 2013 11:04:35 PM)    
 
Its a derivative of diamond and used in pencil and very soft.

Mohan said: (Tue, Mar 19, 2013 11:17:18 AM)    
 
Its a carbon compound and the graphite is very soft that's why it will easily broken.

Akila said: (Mon, Mar 25, 2013 09:22:43 PM)    
 
The central lead of pencil is made of graphite which is black, soft and hence makes markable impressions on the paper.

V.S.Shabarish said: (Sun, May 12, 2013 08:38:26 AM)    
 
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.

Neha said: (Thu, Jun 13, 2013 08:03:27 PM)    
 
Graphite is the allotropes of carbon. It is black and soft.

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