A few drops of alkaline copper sulphate solution are added to milk taken in a test tube. The colour produced will be:

Violet

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Blue-black

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Yellow

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Brown

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
Violet

Violet colour will appear when few drops of alkaline copper sulphate solution are added to milk taken in a test tube since milk contains proteins.

Suggest Corrections

Similar questions

In an experiment, Radha took small amounts of an unknown food item in a test tube. Then, she added two drops of copper sulphate solution in the test tube along with a few drops of caustic soda solution. After a few minutes, the colour of the food item changed to violet.

In the given experiment, the change in colour of the food item to violet indicates the presence of

A student added a few pieces of aluminium metal to two test tubes A and B containing an aqueous solution of iron sulphate and copper sulphate. In the second part of her experiment, she added iron metal to another test lube C and D containing an aqueous solution of aluminium sulphate and copper sulphate. In which test tube or test tubes will she observe colour change? Based on this experiment state which one is the most reactive metal and why?

Q. A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will be:

Q. A student was given two test-tubes A and B each containing a colourless solution. When a few drops of universal indicator were added to the two test-tubes, one by one, then the colour of solution in test-tube A changed to blue whereas the colour of solution in test-tube B changed to orange.
(a) Which test-tube has a solution of pH higher than 7?
(b) Which test-tube has a solution of pH lower than 7?
(c) Which test-tube has an acidic solution?
(d) Which test-tube has an alkaline solution?

Few drops of universal indicator are added to three colourless solutions taken separately in three test tubes labeled as P, Q, R respectively. The colour change of the solutions are marked in the following figures:

Arrange the test tubes in a descending order as per the pH value?

Join BYJU'S Learning Program

A few drops of alkaline copper sulphate solution are added to milk taken in a test tube. The colour produced will be:

The correct option is A VioletViolet colour will appear when few drops of alkaline copper sulphate solution are added to milk taken in a test tube since milk contains proteins.

The correct option is A
Violet

Violet colour will appear when few drops of alkaline copper sulphate solution are added to milk taken in a test tube since milk contains proteins.