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Multiple Choice Questions (MCQs) lay a strong foundation for students who want to score better marks in their exams. By attempting topic wise and chapter wise MCQs, students can immediately find out how well they understand a topic or chapter from their text books whether it is NCERT books or books from some other publications.                               The MCQs designed by CBSE  HUB ONLINE (AAPKA EDU-GUIDE) Online comprehensively cover the topics, sub-topics, and chapters taught by different educational boards including CBSE, BSEH, and NBSE. Attempting an MCQs test also helps improve your critical & analytical skills. After submitting their answers, students can instantly see the results including total questions, correct answers, incorrect answers, not attempted, and marks percentage. By looking at these results alone, students can dramatically improve their overall understanding of a chapter or t...

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CBSE Syllabus for Grade VIII Science for Academic Year 2020-2021 CBSE Grade VIII Science Syllabus is beneficial to the learner  who are preparing for their examinations. The  CBSE Syllabus  is designed by the team of experts after a thorough research. Learner  must refer this syllabus every time whenever they study. It will help them in knowing the topics that they have to study. Moreover it will also provide weightage of each unit of Science subject. Download CBSE Grade VIII Science Syllabus PDF for 2020-2021 Chapter 1:  Crop Production and Management Chapter 2:  Microorganisms: Friend and Foe Chapter 3:  Synthetic Fibres and Plastics Chapter 4:  Materials – Metals and Non-Metals Chapter 5:  Coal and Petroleum Chapter 6:  Combustion and Flame Chapter 7:  Conservation of Plants and Animals Chapter 8:  Cell – Structure and Functions Chapter 9:  Reproduction in Animals Chapter 10:  Reaching the Age of Adolescence...

CBSE Grade   9 Science Syllabus 2020-2021 CBSE grade   9 science syllabus provides the overview of the units and chapter under each unit of science subject. It also give the detail of marks allocated to each unit. Based on this marks distribution the  CBSE grade   9  annual paper will be design. So, it’s very important for the children to know the the CBSE Syllabus for grade   9 Science. It will also help them in planning their studies in advance. Getting familiar with the CBSE Grade   9 Science syllabus gives children an idea about the chapters, marks weightage and time duration. Along with the theory CBSE Grade   9 Science syllabus, children will also find the practical science syllabus. To download the complete CBSE Syllabus for Grade   9 in PDF format visit the link below. Download CBSE Grade   9 Science Syllabus PDF 2020-2021 Knowing the  CBSE Syllabus  for Grade   9 Science for academic year 2020-2021 will help ...

Sound Sound Sound is a form of energy which produces a sensation of hearing in our ears. Production of Sound Sound is produced due to the vibration of objects. Vibration is a periodic back-and-forth motion of the particles of an elastic body or mediumkind about a central position. It is also named as oscillation. For example: Stretched strings of a guitar vibrate to produce sound. When membrane of a table is struck, it vibrates to produce sound. Propagation of Sound The travelling of sound is called propagation of sound. Sound is propagated by the to and fro motion of particles of the medium. When an object vibrates, the particles around the medium vibrate. The particle in contact with the  vibrating object is first displaced from its equilibrium position. Each particle disturbs the other particle in contact. Thus, the disturbance is carried from  the source to the listener. Only the disturbance produced by the vibrating body travels through the medium but the particles do not...