Advertisements
Advertisements
प्रश्न
Boojho, Paheli and their friend Golu were provided with a test tube each containing China rose solution which was pink in colour. Boojho added two drops of solution ‘A’ in his test tube and got dark pink colour. Paheli added 2 drops of solution ‘B’ to her test tube and got green colour. Golu added 2 drops of solution ‘C’ but could not get any change in colour. Suggest the possible cause for the variation in their results.
Advertisements
उत्तर
A’ is an acidic solution, China rose solution turns dark pink in acids. ‘B’ is a basic solution since China's rose solution turns green in the basic solution. ‘C’ is a neutral solution hence there is no change in the colour of the China rose solution.
APPEARS IN
संबंधित प्रश्न
Give one example in the following case:
A base which is not an alkali.
What is the difference between an alkali and a base?
When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?
A solution changes the colour of turmeric indicator from yellow to red. The solution is ______.
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.
| Test tube | Nature of Solution | Change in colour of red litmus |
| A | Neutral | |
| B | Basic | |
| C | Acidic | |
| D | Neutral |
Match the following:
| 1. | Wasp sting | a. | Milk of magnesia |
| 2. | Common salt | b. | Acetic acid |
| 3. | Organic acid | c. | Sodium chloride |
| 4. | Antacid | d. | Vinegar |
Which of the following solution is soapy to touch?
______ are bitter in taste.
The nature of toothpaste commonly used is ______ in nature.
One of the events that does not occur during photosynthesis is ______.
