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DINESH PUBLICATION-IS MATTER AROUND US PURE-Short Answer Questions
- Can physical and chemical changes occur together ? Illustrate your ans...
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- On dissolving chalk powder in water, a suspension is obtained. Give an...
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- Name the type of colloids in each of the following giving an example o...
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- what is the difference between colloids and suspensions ?
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- Give an example each for the mixture having the following characterist...
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- Give an example for each of following : (a) Solid-liquid homogeneou...
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- List two differences between a pure substance and a mixture. Give an e...
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- Why is crystallisation better than evaporation for the separation of m...
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- Give one example each of a mixture which shows the following character...
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- Differentiate between an element and a compound. Categorise the follow...
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- Explain why , air is considered a mixture and not a compound.
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- Compare suspension and colloidal solution on the basis of (a) type of ...
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- A solution contains 50 g of sugar in 450 g of water. Calculate the con...
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- What is 'Tyndall effect' ? Name two mixtures which show this effect.
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- Give two differences between pure substances and mixture. Give one exa...
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- What is the difference between (i) Pure substance and mixture (ii) Col...
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- Compare the particle sizes in a true solution, colloidal solution and ...
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- Does freezing of water to ice represent a physical change ?
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- Discuss the role of centrifugation in removing the precipitate formed ...
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- How will you justify that the formation of water from hydrogen and oxy...
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