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Chapter 1 Chemical Reactions And Equations / Chemistry / Class 10 / Intext Questions / NCERT Long Question Answers / Science

What do you mean by a precipitation reaction? Explain by giving examples.

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A precipitation reaction occurs when two dissolved substances combine, yielding an insoluble product called a precipitate. Typically, it involves a double displacement reaction where ions switch, forming new compounds. Examples include sodium sulphate with barium chloride, yielding barium sulphate precipitate, and silver nitrate with sodium chloride, forming silver chloride precipitate, crucial in chemical and analytical applications.

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Chapter 1 Chemical Reactions And Equations / Chemistry / Class 10 / Intext Questions / NCERT Long Question Answers / Science

What does one mean by exothermic and endothermic reactions? Give examples.

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Exothermic reactions release heat, like methane combustion, respiration, carbon burning in oxygen, and organic decomposition. Endothermic reactions absorb heat, such as calcium carbonate decomposition, ferrous sulfate thermal decomposition, silver chloride decomposition, photosynthesis, and electrolysis of water. They require energy input, distinguishing them from exothermic reactions, which release energy.

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Class 9 / Is Matter Around Us Pure / Long Answer Questions / long Answer questions with solutions / NCERT Solutions / Science

Difference Between Homogeneous and Heterogeneous Mixtures

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Homogeneous and heterogeneous mixtures differ in composition and uniformity. A homogeneous mixture has a uniform appearance with no visible separation, like saltwater or air. In contrast, a heterogeneous mixture consists of distinguishable components, such as sand in water or salad. Learn key differences, characteristics, and examples in this easy-to-understand guide.

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Differentiate between Bone and Cartilage with respect to Structure Functions and Location.
Class 9 / extra question Answer / NCERT Solutions / Question and Answers / Science / Tissues- Chapter 6

15 Important Differences between Bones and Cartilage

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15 Important Differences between Bones and Cartilage explained with various factors like Composition, Hardness, Blood supply, Growth, Healing, Shape, Structure, Support, Density, Function, Regeneration, Elasticity, Ligament attachment, Location, Types

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