You are provided with three test tubes A, B and C as shown in figure with different liquids. What will you observe when you put(a) a piece of blue litmus paper in each test tube(b) a piece of red litmus paper in each test tube(c) a few drops of phenolphthalein solution to each test tube?
Test tube Effect on blue litmus paper Effect on red litmus paper Effect on phenolphthalein solution A turns red no change colourless B no change turns blue turns pink C no change no change colourless
Related Articles You have been provided with three test-tubes. One of these test -tubes contain distilled water and the other two contain an acidic and a basic solution respectively. If you are given only blue litmus paper, how will you identify the contents of each test-tube?
What change will you observe if you test soap with litmus paper (red and blue)?
You have been provided with three test tubes. one of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
2 mL of ethanoic acid was taken in each of test-tube I and test-tube II. A red litmus paper was introduced in test-tube I and a pH paper was introduced in test-tube II. The experiment was performed by four students A, B, C and D, they reported their observations as given below :
Look at figure which shows solutions taken in test tubes A, B, C and D. What colour is expected when a piece of red litmus paper is dropped in each test tube? Nature of the solutions is given in the table for your help
Take three test-tubes. Fill each of them with water. Label them A, B and C. Keep a snail in test-tube A, a water plant in test-tube B and in C, keep snail and plant both. Which test-tube would have the highest concentration of CO2?
Take three test tubes. Fill 3/4th of each with water. Label them A, B, and C. Keep a snail in test tube A, a water plant in test tube B, and in C, keep the snail and plant both. Which test tube would have the highest concentration of CO2?
You have been given three test tubes one of them contains distilled water and other contains the acidic and basic solution. If you have given only a red litmus paper how will you identify the content of each test tubes?
2 mL each of concentrated HCl, HNO3 and a mixture of concentrated HCl and concentrated HNO3 in the ratio of 3: 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could beAlAuCuPt
2 mL each of conc. HCl, cone. HNO3 and a mixture of conc. HCl and conc. HNO3 in the ratio of 3: 1 were taken in test tubes labelled as A, B, and C. A small piece of metal was put in each test tube. No change occurred in test tubes A But the metal got dissolved in test tube C. The metal could be.AlAu CuPt.
A student prepared hydrogen chloride gas by treating sodium chloride with concentrated sulphuric acid in a test-tube. He held a strip of dry blue litmus paper in HCl gas coming out of the test-tube. The student observed that on coming in contact with HCl gas, the colour of blue litmus paper :
What do you mean by Blue litmus paper and Red litmus paper?
Blue litmus solution is added to two test tubes A and B containing dilute HC1 and NaOH solution respectively. In which test tube a colour change will be observed? State the colour change and give its reason.
In three test tubes A, B and C, three different liquids namely, distilled water, underground water and distilled water in which a pinch of calcium sulphate is dissolved, respectively are taken. An equal amount of soap solution is added to each test tube and the contents are shaken. In which test tube will the length of the foam (lather) be longest? Justify your answer.
Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid (HCL) is added to test tube A, while acetic acid (CH3COOH) is added to test tube B. Amount and concentration taken for both the acids are same. In which test tube will the fizzing occur more vigorously and why?
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