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Explain why chlorine turns moist starch ...

Explain why chlorine turns moist starch iodide paper blue-black.

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Name the gas that turns moist starch iodide paper blue black.

Name the gas that turns moist starch iodide paper blue black.

Identify the salt R from the observation Salt R is black in colour. On reacting with concentrated HCl, it liberates a pungent greenish yellow gas which turns moist starch iodide paper blue black.

Select from the list the gas that matches the description given in each case : [Methane , Hydrogen, Nitrogen , Ammonia , Nitrogen dioxide , Chlorine] A greenish yellow gas that turns moist starch iodide paper blue black.

Select from the list the gas that matches the description given in each case [Hydrogen , Nitrogen,Ammonia,Nitrogen dioxide, Chlorine] A greenish yellow gas that turns moist starch iodide paper blue black.

From the list of substances given - Ammonium sulphate, Lead carbonate, Chlorine, Copper nitrate, Ferrous sulphate – State: A substance that turns moist starch iodide paper blue.

Greenish yellow gas which turns starch iodide paper black.

Which of the following gas turn starch iodide paper blue ?

SO_(3) does not turn starch iodate paper blue.

Which one of the following halogents turn (s) strach iodide paper blue ?

ICSE-PRACTICAL WORK-REVIEW QUESTIONS
  1. Name a non-metallic oxide which is a reducing agent.

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  2. Name (formula not acceptable) the gas produced in the following reacti...

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  3. Explain why chlorine turns moist starch iodide paper blue-black.

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  4. State three tests by which you could identify a gas as being chlorine.

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  5. State what you observe when a piece of moist blue litmus paper is plac...

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  6. For the elements sodium and phosphorus, state the following the form...

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  7. For the elements sodium and phosphorus, state the following The phys...

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  8. For the elements sodium and phosphorus, state the following the natu...

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  9. State what you observe when a piece of moist blue litmus paper is plac...

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  10. Write correctly a balanced equation for the following “word equation":...

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  11. What happens if carbon dioxide is bubbled into a suspension of calcium...

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  12. Give a chemical test to distinguish between the following pairs of com...

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  13. Complete the following "word" equation : lime water + carbon dioxide t...

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  14. Give reasons for: 'It is dangerous to sleep in a closed room in which ...

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  15. Give the name of an acid salt found in "Health Salts".

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  16. Name two important processes which generate or release carbon dioxide ...

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  17. Name two processes which remove carbon dioxide from the atmosphere.

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  18. Study the reaction scheme below and then answer which follow: Giv...

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  19. Study the reaction scheme below and then answer which follow: Giv...

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  20. Study the reaction scheme below and then answer which follow: Giv...

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