Advertisements
Advertisements
प्रश्न
What colour would the universal indicator show in an aqueous solution of sugar? Why?
उत्तर
A universal indicator will show a green colour in a sugar solution (which is the colour for pH 7). An aqueous solution of sugar is also a neutral substance. Hence, its pH value is 7.
APPEARS IN
संबंधित प्रश्न
Fill in the blank in the following sentences:
Onion and vanilla extract are..........................indicators.
The property which is common between vinegar and curd is that they:
(a) have sweet taste
(b) have bitter taste
(c) are tasteless
(d) have sour taste
The pH of soil A is 7.5 while that of soil B is 4.5. Which of the two soils, A or B, should be treated with powdered chalk to adjust its pH and why?
Two solutions X and Y have pH = 4 and pH = 8, respectively. Which solution will give alkaline reaction and which one acidic?
Fill in the following blank with suitable words:
The more acidic a solution, the ................. the pH.
A sample of rain water turned universal indicator paper yellow. What would you expect it pH to be? Is it a strong or a weak acid?
Separate the following into substances having pH values above and below 7. How do these influence litmus paper?
(i) Lemon juice
(ii) Solution of washing soda
(iii) Toothpaste
(iv) Vinegar
(v) Stomach juices
The pH values of five solutions A, B, C, D and E are given below:
| A | 1 |
| B | 5 |
| C | 7 |
| D | 11 |
| E | 13 |
Which solution is weakly alkaline.
Which one of the following can be used as an acid- base indicator by a visually impared student?
Name the acid present in vinegar.
