Non- metals are generally poor conductors of heat as they lack free electrons. Diamond, which is good conductor of heat, is an exception.
Electrical conductivity of Non- metals: Non- metals are generally poor conductors of electricity because they do not have the free electrons which helps in the conduction of electricity . Graphite, which is a good conductor of electricity, is an exception. Nonmetals have 4,5,6,7,8 electrons in their outermost shell. These electrons are not free and hence they do not conduct electricity.
Non-Metals are Poor Conductors of Heat and Electricity. This means that non- metals do not allow heat and electricity to pass through them. For example, sulphur is a non-metal which does not conduct heat or electricity. Similarly, a piece of coal (which is mainly carbon non-metal) also does not conduct heat or electricity. Many of the non-metals are, in fact, very good insulators. There are, however, some exceptions. A form of the carbon element, diamond is a non-metal which is a good conductor of heat. And another form of carbon element, graphite is a non- metal which is a good conductor of electricity. Being a good conductor of electricity, graphite is used for making electrodes (as that in dry cells).
Which of the folowing allotropic from a carbon good conductor of electricity ? | |||
Right Option : C | |||
View Explanation |
Which of the following are correct : (a) Non- metals are generally poor conductors of heat as they lack free electrons. (b) Graphite, which is a good conductor of electricity, is an exception. (c) Diamond, which is bad conductor of heat, is an exception. | |||
Right Option : A | |||
View Explanation |
Heat conduction is the property of | |||
Right Option : B | |||
View Explanation |
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.