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How do you stop a nosebleed fast, and should I tilt my head back

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Why do I get nosebleeds during the summer, and is it normal

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When should I worry about a nosebleed

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Describe an experiment to separate the components of a mixture containing sand, salt, and camphor.

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Alloys are considered mixtures, not compounds. Explain with examples (e.g., steel, brass).

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A student is given a mixture of iron filings, sulphur powder, and salt..

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Explain concentration of a solution (mass by mass, mass by volume percentage).

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Pure substances vs. mixtures Discuss with examples why most things around us are mixtures.

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Explain the Tyndall effect. Why do colloids show it while true solutions do not Give examples.

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What is a saturated solution How can you test if a solution is saturated

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Distinguish between physical and chemical changes with at least 5–6 examples of each.

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Explain various methods of separating mixtures (evaporation, crystallisation, sublimation..

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Describe the principle, apparatus, and procedure for fractional distillation. Why is it preferred.

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Compare true solutions, colloids, and suspensions in detail..

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Differentiate between elements, compounds, and mixtures with suitable examples.

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Which are chemical changes (a) Growth of a plant (b) Rusting of iron (c) Mixing of iron filings..

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Classify these into elements, compounds, and mixtures (a) Sodium (b) Soil (c) Sugar solution..

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Which of the following will show the “Tyndall effect” (a) Salt solution (b) Milk..

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Heart Attacks, Good cholesterol and Bad Cholesterol.

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Find the solubility of each salt at 293 K. Which salt has the highest solubility at this temp.

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Which separation techniques will you apply for the separation of, Oil from water, ..

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Write the steps you would use for making tea. Use the words solution, solvent, solute, dissolve..

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(a) What mass of potassium nitrate would be needed to produce a saturated solution of potassium..

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Pragya makes a saturated solution of potassium chloride in water at 353 K and leaves the solution..

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Separating Ammonium chloride from a mixture containing sodium chloride and ammonium chloride.

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Separating small pieces of metal in the engine oil of a car.

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Separating different pigments from an extract of flower petals.

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Separating Butter from Curd

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How will you separate a mixture containing kerosene and petrol.

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Name the technique(s) to separate (i) butter from curd, (ii) salt from sea-water,..

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