Advertisements
Advertisements
प्रश्न
Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed
पर्याय
Yellow in both acid and base.
Yellow in acid and red in base.
Pink in acid and yellow in base.
Red in acid and blue in base.
Advertisements
उत्तर
Yellow in acid and red in base
Explanation:
Turmeric paste is yellow in colour. So it remains yellow in acid and changes its colour to red in base.
APPEARS IN
संबंधित प्रश्न
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again.
What is the nature of soap (acidic/basic) as shown by the indicator present in curry stain?
The salt which will give an acidic solution on dissolving in water is ______.
Name the acid present in vinegar.
The label on the bottle of chemical is spoiled. How will you find whether the chemical is acidic or not?
Choosing the correct words given in brackets, complete the sentence given below:
An acid is a compound which, when dissolved in water gives ______ ( hydronium / hydroxide) ions as the only ______ (positive/negative) ions.
Two acids ‘A’ and ‘B’ are given. Acid A gives one hydrogen ion per molecule of the acid in solution. Acid B gives two hydrogen ions per molecule of the acid in solution.
- Find out acid A and acid B.
- Which acid is called the King of Chemicals?
Match the chemical substances given in Column (A) with their appropriate application given in Column (B)
| Column (A) |
Column (B) |
| (A) Bleaching powder | (i) Preparation of glass |
| (B) Baking soda | (ii) Production of H2 and Cl2 |
| (C) Washing Soda | (iii) Decolourisation |
| (D) Sodium chloride | (iv) Antacid |
Which of the following set of substances contain acids?
Which of the following metal does not react with sodium hydroxides?
Complete the following equation.
HCl + H2O → ______ + ______.
