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NCERT Environmental Science Capsule CBSE Class 6, 7, 8, 9 & 10 Combined

NCERT Environmental Science Capsule CBSE Class 6, 7, 8, 9 & 10 Combined

Environment The environment is everything that is around us. Earth’s Spheres Ecosystem Living Organisms Abiotic Components Food Chain Flow of energy Biochemical Cycles Water Cycle Nitrogen Cycle Carbon Cycle Oxygen Cycle Natural Resources Greenhouse Gases & Global Warming Earth’s spheres Biosphere: The global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, geosphere, hydrosphere, and atmosphere. Lithosphere: The rigid, outermost shell of an Earth, that is defined by its rigid mechanical…

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Acids, Bases and Salts NCERT Class 10 Ch 2 Notes for CBSE

Acids, Bases and Salts NCERT Class 10 Ch 2 Notes for CBSE

pH pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution on a scale of 0 to 14. It tells how acidic or alkaline a substance is. p in pH stands for ‘potenz’ in German, meaning potential or power and H stands for Hydrogen ion. On the pH scale, we can measure pH from 0 (very acidic) to 14 (very alkaline). Substances that aren’t acidic or alkaline (neutral solutions) usually have a pH of…

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50 MCQs of Acids, Bases and Salts NCERT Class 10 Ch 2

50 MCQs of Acids, Bases and Salts NCERT Class 10 Ch 2

1. Which is known as carbolic acid? A. Phenol B. Ethanol C. Acetic acid D. Oxalic acid 2. Name the most common indicator used in a laboratory? A. Methyl Orange B. Red Litmus C. Universal Indicator D. Phenolphthalein 3. Name an element which is common to all acids? A. Sulphur B. Chlorine C. Nitrogen D. Hydrogen 4. What type of reaction takes place when an acid dissolves in water: A. Exothermic B. Endothermic C. Substitution D. Double-displacement 5. In pH,…

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Class 6th NCERT History Complete Notes | SSC | UPSC | IB | Railways

Class 6th NCERT History Complete Notes | SSC | UPSC | IB | Railways

Class 6th NCERT History Complete Notes for competitive government exams such as UPSC CSE, SSC CGL, CHSL, Banking and Railways. History It’s a chronological account of events as they took place in the past. Manuscripts (Latin manu – hand) Usually written on palm leaves or on specially prepared bark of a tree known as birch, which grows in the Himalayas. It dealt with Subjects: religious beliefs & practices, the lives of kings Written in Sanskrit, Prakrit (languages used by ordinary…

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