If the radius is increased by 1 cm. Therefore it is difficult to catch fire. Go back to main page or move to of the page. This liquid is to be filled in of radius 3 cm and height 6 cm. . These text book questions are very helpful for better understanding of the concepts and formulas.
These questions will help you to revise the concepts learnt from the book. Solution: The water placed in the outermost part of the flame will be heated in short time since it is non-luminous flame and is regarded as the hottest part of the flame. In an experiment performed by a student, he noted 6 kg of fuel was completely burnt. From each one of its corners, a square of 8 cm is cut off. Click here for the other exercises like or or and Solutions.
How do we express the unit of calorific value of a fuel? If the walls of the tank are 5 cm thick, then what is the thickness of the bottom of the tank? After you click on the subject name you will be redirected to the next page where various chapter and its detailed links are provided, click on those link and you will be able to read and save you notes and solutions. Please do not copy or use these images, notes and solution on any other websites or do not use them for any commercial purpose, these pictures notes and solution are provided for the students and teacher for a good cause, coping content to other websites may break our copyright laws. The external dimensions of the tank are 2. Do you need Personalised Learning Experience? Go back to main page or move to of the page. Why is it difficult to burn a heap of green leaves, whereas dry leaves catch fire easily? Click here for the other exercises like or or or Solutions.
Go back to main page or move to of the page. Click here for the other exercises like or or and Solutions. Solution: No, because rusting is an exothermic process as heat is liberated during rusting. Having a proper knowledge about combustion is necessary to avoid any emergency caused by fire. Expressing a perfect square number as a sum of odd numbers.
Eureka and Nikhil were performing an experiment in which water has to be heated in a beaker. Vedantu also offers students the opportunity to learn from its accomplished panel of mentors, who are experts in the teaching industry. Go back to main page or move to of the page. Solution: The goldsmith mainly uses non-luminous flame which is termed to be the outermost part of the flame. Now Learn, study and practice anywhere, anytime. Find the volume of the box.
Solution: The burning of a substance in the presence of oxygen is defined as combustion. The solutions are crafted by the best teachers in India so that students can score more marks in exams. Students can watch up best answers to their textbook and easy understand concepts much better and well prepared for their exams. Go back to main page or move to of the page. How much area will it irrigate in 30 min if 9 cm of standing water is desired? What will be the result? In chapter 6, the square root of decimal number using long division method is also given which is very useful tool for further classes also. In this chapter combustion and flame students will learn about what is combustion, what is a fuel, what is ignition temperature, what are inflammable substances. On the other hand combustion is a chemical process in which a substance reacts with oxygen to release energy in the form heat or light.
Which part of flame does goldsmith use for melting gold and silver components? We Wish to all students for their better exams. What will be the percentage change in its total surface area? These benefits enable them to effectively revise the core concepts of each subject. An open box is made of the remaining sheet. The heat was produced and is measured to be 240,000 kJ. Solution: Calorific value is defined as the energy contained in the fuel Now let us consider the complete combustion for 1kg of fuel.
Doing so leads to better preparation so that students can pass their exams with flying colours. Find the length of the wire in metre. What are the conditions under which combustion can take place? There are two methods, one with prime factorization method and other is long division method, to find the square root of a number. Studying the chapter will help the students to know about the types of fire and how to cure that. Eureka placed the beaker near the yellow part of the candle flame whereas Nikhil placed it in the outermost part. Studying straight from school ordered textbooks can be cumbersome for many students. Fill the blank with the appropriate answer.