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प्रश्न
| Column A | Column B | ||
| i | eosin | 1 | losing hydrogen |
| ii | oxidation | 2 | synthetic indicator |
| 3 | losing oxygen | ||
| 4 | natural indicator |
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उत्तर
| Column A | Answers | ||
| i | eosin | 2 | synthetic indicator |
| ii | oxidation | 1 | losing hydrogen |
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संबंधित प्रश्न
Why does an aqueous solution of an acid conduct electricity?
How is the concentration of hydronium ions (H3O+) affected when a solution of an acid is diluted?
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains ______.
Name one natural source of the following acids:
Lactic acid
What ions are present in the solutions of following substances? (write the symbols only)
Nitric acid
What ions are present in the solutions of following substances? (write the symbols only)
Sodium hydroxide
What is the chemical formula of baking soda?
What is the chemical formula of washing soda?
What happens when a solution of sodium hydrogencarbonate is heated? Write equation of the reaction involved.
Explain why, sodium hydrogencarbonate is used as an antacid.
Explain the following:
Lead carbonate does not react with dilute HCl.
Phenolphthalein is a synthetic type of indicator.
Acids turn blue litmus paper to ______.
During the preparation of hydrogen chloride gas on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to ______
Which of the following salts does not contain any water of crystallisation?
Calcium phosphate is present in tooth enamel. Its nature is
Which of the following statements is not correct?
Are all acids corrosive in nature? Name a few acids which are non-corrosive and may be part of our food.
Take a clean test tube with a holder and pour some dilute hydrochloric acid. Add a few pieces of magnesium ribbon pieces slowly. What do you observe? Now show a burning match stick near the mouth of the test tube. Do you hear any sound? The gas burns with a pop sound. From this, it is observed that hydrogen gas has been formed due to the reaction between acid and metal.
On placing a copper coin in a test tube containing green ferrous sulphate solution, it will be observed that the ferrous sulphate solution ______.
