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Apr 5, 2024 · NCERT Class 7 Science Chapter 11 guides us through different concepts and principles related to light. We begin our journey with the definition of light and the path of light. Thereafter, we explore different types of objects based on their interaction with light. Furthermore, we will learn about different types of images and types of spherical ...
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Apr 4, 2024 · The extra and important questions for Class 7 Science Chapter 15 - Light engage in a concept-focused discussion, encompassing all chapter themes. This question-and-answer method proves time-saving during exam prep, offering an efficient way to revise the chapter and enhance understanding.
Apr 8, 2024 · When added in suitable amounts acids and bases cancel each other’s effects . The solution we get is neither acidic nor basic . The reaction between an acid and a base is known as Neutralisation reaction . Heat is also a result of the neutralisation reaction.
Apr 8, 2024 · Chemical change. Changes in properties such as size, shape, colour and state of a substance are called physical changes. No new substance is formed. A physical change is a temporary change. It can be reversed . Very little energy is either absorbed or evolved in a physical change. A temporary change in colour may take place in a physical change.
Apr 4, 2024 · CBSE Class 7 Sample Papers. Once you have gone through CBSE Class 7 study material, it is time to practice the questions to ace the examinations and solve the previous year's Class 7 sample papers the best way. Click on the respective PDFs of each subject to download the sample papers to get a clear idea about the pattern of questions asked in ...
- 1. What is the syllabus for CBSE Class 7?The CBSE Board Class 7 syllabus includes subjects such as Mathematics, Science, Social Science, English, and a second language. It is designed to b...
- 2. What are the best books to prepare for CBSE Class 7 exams?Some of the recommended books for CBSE Class 7 exams are NCERT textbooks, RD Sharma for Mathematics, Lakhmir Singh and Manjit Kaur for Science, and...
- 3. Where can I find important questions for CBSE Class 7 exams?You can find important questions for CBSE Class 7 exams on Vedantu’s website.
- 4. Does Vedantu offer online classes for CBSE Class 7?Yes, Vedantu offers online classes for CBSE Class 7 students. Their online classes are conducted by experienced teachers and are designed to help s...
- 5. Are there any tips to prepare for CBSE Class 7 exams?Some tips to prepare for CBSE Class 7 exams include creating a study schedule, practising regularly, solving sample papers and previous years' ques...
6 days ago · Some important properties of an ideal solution are: The physical properties are strictly related to the properties of the pure components. The enthalpy of the solution is zero. The enthalpy of the solution gets quicker to zero; it is more likely to show an ideal behaviour. ΔmixH=0. The volume of mixing is also zero.
4 days ago · Define Luminous Intensity. Luminous Intensity is a measure of the wavelength-weighted power radiated by a light source in a particular direction per unit solid angle. It is based on the luminosity function, a standard model of the sensitivity of the human eye. The SI unit of luminous intensity is the candela or cd, it is an SI base unit.
