State your observation in each of the following cases:
When moist starch iodide paper is introduced into chlorine gas.

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Solution

Moist starch iodide paper turns blue black when moist starch iodide paper is brought near to it. Chlorine oxidizes iodide ions to iodine and starch reacts with it forming a blue black compound.

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Q. When moist starch iodide paper is introduced near ______ gas, its colour changes to blue-black.

Q. What do you observes when:
Moist starch iodide paper is introduced in the jar of Chlorine?

Q. Moist starch iodide paper is turned black by chlorine gas .

Is the above statement true?

State your observation for the following cases:
(i) Moist blue litmus is introduced into a gas jar of sulphur dioxide.
(ii) Dry red rose petals are placed in the jar of sulphur dioxide.
(iii) Paper soaked in potassium permanganate solution is introduced into a gas jar of sulphur dioxide.

Q. Assertion :When moist starch iodide paper comes in contact with chlorine, it turns blue back. Reason: Free iodine is liberated from potassium iodide.

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State your observation in each of the following cases:When moist starch iodide paper is introduced into chlorine gas.

Moist starch iodide paper turns blue black when moist starch iodide paper is brought near to it. Chlorine oxidizes iodide ions to iodine and starch reacts with it forming a blue black compound.

State your observation in each of the following cases:
When moist starch iodide paper is introduced into chlorine gas.