The appearance of green colour is due to the reduction of chromium metal. When SO2 is passed through the acidified K2Cr2O7 solution, the orange colour of potassium dichromate solution turns to clear green due to the formation of chromium sulphate. In this reaction, the oxidation state of Cr changes from +6 to +3.

Which one of the following statements is correct when SO2 is passed through acidified k2 cr2o7 solution?

Sulphur dioxide is oxidized to sulphuric acid. Potassium dichromate is reduced to chromic sulphate. Orange colour of solution turns green.

Which of the following statement is correct for a mixture?

Option (C) is the correct statement for the mixture; as we know that mixture of any liquids or semi-liquids or solids can be separated from each other through various physical methods, such as :- filtration, fractional distillation, centrifugation, crystallization, etc.

Which of the following is correct about SO2?

Thus, sulphur dioxide molecules contain two sigma, two pi bonds and one lone pair of electrons. Hence, the correct option is the option (C).

What happens when Sulphur dioxide is passed through potassium permanganate solution?

Sulfur dioxide react with potassium permanganate and water to produce sulfuric acid, manganese(II) sulfate and potassium sulfate. The reaction takes place in a diluted solution sulfuric acid.

What is the statement of mixtures?

Mixture Basics They are all mixtures, and mixtures are about physical properties, not chemical ones. That statement means the individual molecules enjoy being near each other, but their fundamental chemical structure does not change when they enter the mixture.

What is not correct about a mixture *?

A mixture does not have a fixed melting point, boiling point etc. On the other hand, compounds have a a fixed melting point, boiling point. Mixture contain many different substances and different substance have different boiling point.

Which of the following is correct about pressure?

Which of the following is correct about Pressure? Notes: Pressure is a scalar quantity. Pressure is derived from Force which is a vector quantity but still pressure is a scalar. The reason for this is that pressure always acts perpendicular to the surface it acts upon.

When we press the bulb of a dropper?

: When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper.