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Insulators have very wide forbidden energy gap nearly of the order of 5eV or more.
Because of this very high energy gap it becomes impossible for electrons present in valence band to cross the gap and reach to the conduction band and this makes electrical conduction a practical impossibility in insulators at room temperature.
Here are some good maths important questions for Class 12 Board 2019. Question 1) The x-coordinate of a point on the line joining the points P(2, 2, 1) and Q(5, 1, – 2) is 4. Find its z-coordinate Question 2) Write the principle value of tan-1(1) +cos-1(-1/2) Question 3) A fair coin is tossed 8 times, find the probability of (i) exactly 5 heads (ii) … Continue reading Mathematics Important Questions for Class 12 Board 2019
This article is about science chapter 8 how do organisms reproduce class 10 important questions. PDF download of these important questions is also available. We also have additional study material related to this chapter. how do organism reproduce class 10 notes You can also visit this page for class 10 science How do organisms reproduce class 10 important questions (Chapter 8) SECTION A How will … Continue reading How do organisms reproduce class 10 important questions (pdf download)
This page contains Diversity in living organisms class 9 important questions. This is a class 9 biology chapter. For good datailed notes on this chapter please visit link Diversity in living organisms class 9 notes. SECTION A Will advanced organisms be the same as complex organisms? Why? Define the taxonomic hierarchy? Write the name of categories? On what basis all organisms are divided into five kingdoms? What … Continue reading Diversity in living organisms class 9 important questions
This page contains class 9 biology questions. We will be arranging this page in two parts. The first part is for term 1 and the second part is for term 2. Visit this page class 9 biology for more notes and study material. Class 10 biology questions for term 1 Question 1. Compare the vacuoles present in plants and animal cells. What is the role of vacuole in … Continue reading Class 9 biology questions
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This page contains Metals and nonmetals class 10 questions answers. Practice these questions for good grades in your exams. Other important links are provided at the bottom of the page. Question 1 Give an example of a metal which is a liquid at room temperature. can be cut easily with a knife. is the best conductor of heat. is a poor conductor of heat. Answer Metal … Continue reading Metals and nonmetals class 10 questions answers (Chapter 3)
This article contains some important practical based questions class 10 science. Section B of class 10 science paper will have questions from practical components. This will have 6 questions of two mark each in Section B. So, students are advised to prepare accordingly for this section as well. Practical based questions class 10 science Dry ammonia gas has no action on litmus paper but a … Continue reading Important Practical based questions class 10 science