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प्रश्न
Write the observation, and balanced equation for the following reaction:
A paper dipped in potassium permanganate solution is placed at the mouth of a test tube, containing sulphur dioxide gas.
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उत्तर
Pink colour of KMnO4 is discharged.
\[\ce{2KMnO4 + 3H2SO4 -> K2SO4 + 2MnSO4 + 5O + 3H2O}{\text{...(1)}}\]
\[\ce{SO2 + H2O + O -> H2SO4 x 5}{\text{...(2)}}\]
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\[\ce{2KMnO4 + 5SO2 + 2H2O -> K2SO4 + 2MnSO4 + 2H2SO4}\]
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संबंधित प्रश्न
Name a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.
You are provided with two reagent bottles marked A and B. One of which contains NH4OH solution and the other contains NaOH solution. How will you identify them by a chemical test?
What do you understand by the following:
Reagent
Z is a compound. With dilute HCl it gives a gas turning dichromatic solution green. Z gives lilac flame. Name Z.
State what do you observe when:
Sulphur burns.
Match the following :
| Column A | Column B |
| 1. A substance that turns moist starch iodide paper blue. |
A. Ammonium sulphate |
| 2. A compound which releases a reddish brown gas on reaction with concentrated sulphuric acid and copper turnings. |
B. Lead carbonate |
| 3 . A solu tion of this compound gives a dirty green preci pi ta te with sodium hydroxide. |
C. Chlorine |
| 4 . A compound which on heating with sodium hydroxide produces a gas which forms dense white fumes with hydrogen chloride. |
D. Copper nitrate |
| 5 . A white solid which gives a yellow residue on heating. |
E. Ferrous sulphate |
Choose the correct answer from the options given below :
When dilute sulphuric acid reacts with iron sulphide, the gas evolved is _______
Fill in the blank.
Potassium sulphite on reacting with hydrochloric acid releases ________
Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
Write balanced equation for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
