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DINESH PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-PBQs
- On keeping iron nails in a blue coloured copper sulphate solution, it ...
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- While studying the double displacement reaction, the solutions of bari...
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- You want to perform an experiment to study a double displacement react...
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- You are given two colourless solutions present in two test tubes. One ...
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- You are provided with two samples of hard water, one containing tempor...
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- How will you distinguish between ethane and ethene with the help of a ...
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- An unknown organic liquid does not turn blue litmus red and gives no e...
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- How will you distinguish between hydrochloric acid and ethanoic acid w...
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- Give a simple test to distinguish soaps from detergents.
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- Write the name of apparatus/chemicals required to study the following ...
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- A student added sodium hydrogen carbonate solution in ethanoic acid ta...
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- A student is studying the properties of acetic acid in his school labo...
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- A student adds a spoon full of powdered sodium hydrogen carbonate to a...
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- A gas is liberated immediately with brisk effervescence when you add a...
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- If you are asked to report two observations about the following two pr...
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- Mention the essential material (chemicals) to prepare soap in the labo...
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- What do you observe when you add a few drops of acetic acid to a test ...
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- A student addd few pieces of aluminium metal to two test tubes A and B...
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- When a few drops of phenolphthalein are added to a dilute solution of ...
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- From an experiment to study the properties of acetic acid. Answer the ...
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