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प्रश्न
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
उत्तर
have sour taste
Vinegar and curd are acidic. They both have a sour taste.
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संबंधित प्रश्न
Indicator is a substance which shows different colours in acidic and basic solutions.
The indicators which turn red in acid solution are:
(a) turmeric and litmus
(b) phenolphthalein and methyl orange
(c) litmus and methyl orange
(d) phenolphthalein and litmus
What is the name of the indicator which can be used for testing the pH of a solution?
Fill in the following blank with suitable words:
The more alkaline a solution, the............... the pH.
What do you think will be the pH in the stomach of a person suffering from indigestion: less than 7 or more than 7?
How does an antacid work?
A group of students measured the pH of some substances they found in their homes. Their results are given in the following table:
| Substance | pH | Substance | pH |
| Apples | 3.0 | Salt | 7.0 |
| Baking soda | 8.5 | Sugar | 7.0 |
| Black coffee | 5.0 | Toothpaste | 9.0 |
| Household ammonia | 12.0 | Vinegar | 3.0 |
| Lemon juice | 2.5 | Washing soda | 11.5 |
| Milk | 6.5 |
(a) What would the students have used to measure the pH?
(b) Which solution is the most acidic?
(c) Which solution is the most alkaline?
(d) Which solutions are neutral?
(e) Which solution can be used to treat wasp stings?
(f) Which solutions can be used to treat bee stings?
Name the acid present in vinegar.
How will you prepare a china rose indicator?
Write a note on:
Methyl orange
