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प्रश्न
Write the observation, and balanced equation for the following reaction:
Moist starch iodide paper is placed at the mouth of a test tube containing chlorine gas.
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उत्तर
Starch paper turns blue black :
\[\ce{2KI + Cl2 -> 2KCI + I2}\]
I2 reacts with starch to give blue black colour.
The chlorine liberates iodine from KI and then it is decolourised.
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संबंधित प्रश्न
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Blue coloured solution.
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(a) Name the powdered metal added to sodium hydroxide solution.
(b) Name the gas evolved.
(c) Name the salt present in the colorless solution.
Write balanced equation for the following reaction:
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Write balanced equation for the following reaction:
Sulphur dioxide and sodium hydroxide solution
(Give the equation for the formation of the normal salt)
Name :
a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
Colour of an aqueous solution of copper sulphate is ______.
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